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• How to Write a Literature Review | Guide, Examples, & Templates

How to Write a Literature Review | Guide, Examples, & Templates

Published on January 2, 2023 by Shona McCombes . Revised on September 11, 2023.

What is a literature review? A literature review is a survey of scholarly sources on a specific topic. It provides an overview of current knowledge, allowing you to identify relevant theories, methods, and gaps in the existing research that you can later apply to your paper, thesis, or dissertation topic .

There are five key steps to writing a literature review:

• Search for relevant literature
• Evaluate sources
• Identify themes, debates, and gaps
• Outline the structure
• Write your literature review

A good literature review doesn’t just summarize sources—it analyzes, synthesizes , and critically evaluates to give a clear picture of the state of knowledge on the subject.

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Table of contents

What is the purpose of a literature review, examples of literature reviews, step 1 – search for relevant literature, step 2 – evaluate and select sources, step 3 – identify themes, debates, and gaps, step 4 – outline your literature review’s structure, step 5 – write your literature review, free lecture slides, other interesting articles, frequently asked questions, introduction.

• Quick Run-through
• Step 1 & 2

When you write a thesis , dissertation , or research paper , you will likely have to conduct a literature review to situate your research within existing knowledge. The literature review gives you a chance to:

• Demonstrate your familiarity with the topic and its scholarly context
• Develop a theoretical framework and methodology for your research
• Position your work in relation to other researchers and theorists
• Show how your research addresses a gap or contributes to a debate
• Evaluate the current state of research and demonstrate your knowledge of the scholarly debates around your topic.

Writing literature reviews is a particularly important skill if you want to apply for graduate school or pursue a career in research. We’ve written a step-by-step guide that you can follow below.

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Writing literature reviews can be quite challenging! A good starting point could be to look at some examples, depending on what kind of literature review you’d like to write.

• Example literature review #1: “Why Do People Migrate? A Review of the Theoretical Literature” ( Theoretical literature review about the development of economic migration theory from the 1950s to today.)
• Example literature review #2: “Literature review as a research methodology: An overview and guidelines” ( Methodological literature review about interdisciplinary knowledge acquisition and production.)
• Example literature review #3: “The Use of Technology in English Language Learning: A Literature Review” ( Thematic literature review about the effects of technology on language acquisition.)
• Example literature review #4: “Learners’ Listening Comprehension Difficulties in English Language Learning: A Literature Review” ( Chronological literature review about how the concept of listening skills has changed over time.)

You can also check out our templates with literature review examples and sample outlines at the links below.

Download Word doc Download Google doc

Before you begin searching for literature, you need a clearly defined topic .

If you are writing the literature review section of a dissertation or research paper, you will search for literature related to your research problem and questions .

Make a list of keywords

Start by creating a list of keywords related to your research question. Include each of the key concepts or variables you’re interested in, and list any synonyms and related terms. You can add to this list as you discover new keywords in the process of your literature search.

• Social media, Facebook, Instagram, Twitter, Snapchat, TikTok
• Body image, self-perception, self-esteem, mental health
• Generation Z, teenagers, adolescents, youth

Search for relevant sources

Use your keywords to begin searching for sources. Some useful databases to search for journals and articles include:

• Your university’s library catalogue
• Google Scholar
• Project Muse (humanities and social sciences)
• Medline (life sciences and biomedicine)
• EconLit (economics)
• Inspec (physics, engineering and computer science)

You can also use boolean operators to help narrow down your search.

Make sure to read the abstract to find out whether an article is relevant to your question. When you find a useful book or article, you can check the bibliography to find other relevant sources.

You likely won’t be able to read absolutely everything that has been written on your topic, so it will be necessary to evaluate which sources are most relevant to your research question.

For each publication, ask yourself:

• What question or problem is the author addressing?
• What are the key concepts and how are they defined?
• What are the key theories, models, and methods?
• Does the research use established frameworks or take an innovative approach?
• What are the results and conclusions of the study?
• How does the publication relate to other literature in the field? Does it confirm, add to, or challenge established knowledge?
• What are the strengths and weaknesses of the research?

Make sure the sources you use are credible , and make sure you read any landmark studies and major theories in your field of research.

You can use our template to summarize and evaluate sources you’re thinking about using. Click on either button below to download.

Take notes and cite your sources

As you read, you should also begin the writing process. Take notes that you can later incorporate into the text of your literature review.

It is important to keep track of your sources with citations to avoid plagiarism . It can be helpful to make an annotated bibliography , where you compile full citation information and write a paragraph of summary and analysis for each source. This helps you remember what you read and saves time later in the process.

To begin organizing your literature review’s argument and structure, be sure you understand the connections and relationships between the sources you’ve read. Based on your reading and notes, you can look for:

• Trends and patterns (in theory, method or results): do certain approaches become more or less popular over time?
• Themes: what questions or concepts recur across the literature?
• Debates, conflicts and contradictions: where do sources disagree?
• Pivotal publications: are there any influential theories or studies that changed the direction of the field?
• Gaps: what is missing from the literature? Are there weaknesses that need to be addressed?

This step will help you work out the structure of your literature review and (if applicable) show how your own research will contribute to existing knowledge.

• Most research has focused on young women.
• There is an increasing interest in the visual aspects of social media.
• But there is still a lack of robust research on highly visual platforms like Instagram and Snapchat—this is a gap that you could address in your own research.

There are various approaches to organizing the body of a literature review. Depending on the length of your literature review, you can combine several of these strategies (for example, your overall structure might be thematic, but each theme is discussed chronologically).

Chronological

The simplest approach is to trace the development of the topic over time. However, if you choose this strategy, be careful to avoid simply listing and summarizing sources in order.

Try to analyze patterns, turning points and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred.

If you have found some recurring central themes, you can organize your literature review into subsections that address different aspects of the topic.

For example, if you are reviewing literature about inequalities in migrant health outcomes, key themes might include healthcare policy, language barriers, cultural attitudes, legal status, and economic access.

Methodological

If you draw your sources from different disciplines or fields that use a variety of research methods , you might want to compare the results and conclusions that emerge from different approaches. For example:

• Look at what results have emerged in qualitative versus quantitative research
• Discuss how the topic has been approached by empirical versus theoretical scholarship
• Divide the literature into sociological, historical, and cultural sources

Theoretical

A literature review is often the foundation for a theoretical framework . You can use it to discuss various theories, models, and definitions of key concepts.

You might argue for the relevance of a specific theoretical approach, or combine various theoretical concepts to create a framework for your research.

Like any other academic text , your literature review should have an introduction , a main body, and a conclusion . What you include in each depends on the objective of your literature review.

The introduction should clearly establish the focus and purpose of the literature review.

Depending on the length of your literature review, you might want to divide the body into subsections. You can use a subheading for each theme, time period, or methodological approach.

As you write, you can follow these tips:

• Summarize and synthesize: give an overview of the main points of each source and combine them into a coherent whole
• Analyze and interpret: don’t just paraphrase other researchers — add your own interpretations where possible, discussing the significance of findings in relation to the literature as a whole
• Critically evaluate: mention the strengths and weaknesses of your sources
• Write in well-structured paragraphs: use transition words and topic sentences to draw connections, comparisons and contrasts

In the conclusion, you should summarize the key findings you have taken from the literature and emphasize their significance.

When you’ve finished writing and revising your literature review, don’t forget to proofread thoroughly before submitting. Not a language expert? Check out Scribbr’s professional proofreading services !

This article has been adapted into lecture slides that you can use to teach your students about writing a literature review.

Scribbr slides are free to use, customize, and distribute for educational purposes.

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If you want to know more about the research process , methodology , research bias , or statistics , make sure to check out some of our other articles with explanations and examples.

• Sampling methods
• Simple random sampling
• Stratified sampling
• Cluster sampling
• Likert scales
• Reproducibility

 Statistics

• Null hypothesis
• Statistical power
• Probability distribution
• Effect size
• Poisson distribution

Research bias

• Optimism bias
• Cognitive bias
• Implicit bias
• Hawthorne effect
• Anchoring bias
• Explicit bias

A literature review is a survey of scholarly sources (such as books, journal articles, and theses) related to a specific topic or research question .

It is often written as part of a thesis, dissertation , or research paper , in order to situate your work in relation to existing knowledge.

There are several reasons to conduct a literature review at the beginning of a research project:

• To familiarize yourself with the current state of knowledge on your topic
• To ensure that you’re not just repeating what others have already done
• To identify gaps in knowledge and unresolved problems that your research can address
• To develop your theoretical framework and methodology
• To provide an overview of the key findings and debates on the topic

Writing the literature review shows your reader how your work relates to existing research and what new insights it will contribute.

The literature review usually comes near the beginning of your thesis or dissertation . After the introduction , it grounds your research in a scholarly field and leads directly to your theoretical framework or methodology .

A literature review is a survey of credible sources on a topic, often used in dissertations , theses, and research papers . Literature reviews give an overview of knowledge on a subject, helping you identify relevant theories and methods, as well as gaps in existing research. Literature reviews are set up similarly to other  academic texts , with an introduction , a main body, and a conclusion .

An  annotated bibliography is a list of  source references that has a short description (called an annotation ) for each of the sources. It is often assigned as part of the research process for a  paper .  

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• University of Oregon Libraries
• Research Guides

How to Write a Literature Review

• 1. Identify the Question
• Literature Reviews: A Recap
• Reading Journal Articles
• Does it Describe a Literature Review?

Identify the question

Developing a research question.

• 2. Review Discipline Styles
• Searching Article Databases
• Finding Full-Text of an Article
• Citation Chaining
• When to Stop Searching
• 4. Manage Your References
• 5. Critically Analyze and Evaluate
• 6. Synthesize
• 7. Write a Literature Review

From Topic to Question (Infographic)

This graphic emphasizes how reading various sources can play a role in defining your research topic.

( Click to Enlarge Image )

Text description of "From Topic to Question" for web accessibility

In some cases, such as for a course assignment or a research project you're working on with a faculty mentor, your research question will be determined by your professor. If that's the case, you can move on to the next step .  Otherwise, you may need to explore questions on your own. 

A few suggestions

Photo Credit: UO Libraries

According to The Craft of Research (2003) , a research question is more than a practical problem or something with a yes/no answer. A research question helps you learn more about something you don't already know and it needs to be significant enough to interest your readers.

Your Curiosity + Significance to Others = Research Question

How to get started.

In a research paper, you develop a unique question and then synthesize scholarly and primary sources into a paper that supports your argument about the topic.

• Identify your Topic (This is the starting place from where you develop a research question.)
• Refine by Searching (find background information) (Before you can start to develop a research question, you may need to do some preliminary background research to see (1) what has already been done on the topic and (2) what are the issues surrounding the topic.) HINT: Find background information in Google and Books.
• Refine by Narrowing (Once you begin to understand the topic and the issues surrounding it, you can start to narrow your topic and develop a research question. Do this by asking the 6 journalistic question words.

Ask yourself these 6 questions 

These 6 journalistic question words can help you narrow your focus from a broad topic to a specific question.

Who : Are you interested in a specific group of people? Can your topic be narrowed by gender, sex, age, ethnicity, socio-economic status or something else? Are there any key figures related to your topic?

What : What are the issues surrounding your topic? Are there subtopics? In looking at background information, did you notice any gaps or questions that seemed unanswered?

Where : Can your topic be narrowed down to a geographic location? Warning: Don't get too narrow here. You might not be able to find enough information on a town or state.

When : Is your topic current or historical? Is it confined to a specific time period? Was there a causative event that led your topic to become an area of study?

Why : Why are you interested in this topic? Why should others be interested?

How : What kinds of information do you need? Primary sources, statistics? What is your methodology?

Detailed description of, "Developing a Research Question" for web accessibility

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How to Write a Research Question for a Literature Review: A Comprehensive Guide

Crafting a well-defined research question is a crucial step in conducting a literature review. It serves as the foundation upon which the entire review is built, guiding the direction of your research and helping to identify gaps in existing literature. This comprehensive guide will walk you through the process of formulating an effective research question, ensuring that your literature review is focused, relevant, and impactful.

Key Takeaways

• A clear research question is essential for a focused literature review.
• Identifying research gaps helps in formulating relevant research questions.
• Good research questions are clear, precise, relevant, and feasible.
• The process of refining research questions involves seeking feedback and iterative improvement.
• Utilizing tools and techniques can aid in the development of strong research questions.

Understanding the Importance of a Research Question in a Literature Review

Defining a research question.

A research question is a clear, focused, and concise query that guides your literature review. It is not merely a topic but a specific question that you aim to answer through your research. Mastering the thesis writing process begins with formulating a well-defined research question, which sets the direction for your entire study.

Role of a Research Question in Guiding the Literature Review

The research question serves as the backbone of your literature review. It helps you to identify relevant studies, theories, and data that are pertinent to your research. By focusing on a specific question, you avoid the pitfall of compiling a collection of loosely related studies. Instead, you create a synthesized and coherent narrative that addresses your research question directly.

Impact on Research Outcomes

A well-formulated research question significantly impacts the quality and relevance of your research outcomes. It ensures that your literature review is not just a summary of existing studies but a critical analysis that highlights gaps, debates, and advancements in the field. This, in turn, lays a solid foundation for your own research, making it more likely to contribute valuable insights to your academic discipline.

Identifying a Research Gap

Recognizing unexplored areas.

Identifying unexplored areas in the literature is crucial for formulating a meaningful research question. Trends and patterns in existing studies can reveal gaps that need further investigation. For instance, while there may be extensive research on social media's impact on young women, there might be a lack of robust studies on highly visual platforms like Instagram and Snapchat. Recognizing these gaps can help you address unexplored areas in your own research.

Evaluating Existing Literature

Evaluating existing literature involves a thorough review of current studies to identify what has already been addressed and what remains unanswered. This process includes analyzing key concepts, theories, and methodologies used in previous research. By doing so, you can pinpoint weaknesses or contradictions in the literature that your research could address. This step is essential to ensure that your research question is both original and significant.

Formulating a Research Question Based on Gaps

Once you have identified gaps in the literature, the next step is to formulate a research question that addresses these gaps. This involves synthesizing your findings from the literature review and aligning them with your research objectives. A well-formulated research question should be specific, focused, and feasible. It should also contribute to the field by addressing an area that has not been sufficiently explored. This approach not only enhances the relevance of your study but also helps in mitigating thesis anxiety by providing a clear direction for your research.

Characteristics of a Good Research Question

Clarity and precision.

A good research question must be clear and precise. Ambiguity can lead to confusion and misinterpretation, which can derail your entire research process. Ensure that your question is specific enough to be understood without additional explanation.

Relevance to the Field

Your research question should be relevant to your field of study. It should address a significant issue or problem that is of interest to scholars and practitioners in your discipline. This relevance ensures that your research will contribute valuable insights to the existing body of knowledge.

Feasibility and Scope

A well-formulated research question is feasible within the constraints of your resources, time, and expertise. It should not be too broad, as this can make it difficult to manage and analyze the data. Conversely, it should not be too narrow, as this may limit the availability of relevant sources and data. Striking the right balance is crucial for a successful literature review.

Steps to Formulate a Research Question

Formulating a research question is a critical step in the research process. It provides direction and focus for your study, ensuring that your efforts are aligned with your objectives. Here are the essential steps to formulate a research question effectively:

Choosing a Broad Topic

Begin by selecting a broad area of interest. This could be a subject you are passionate about or one that is relevant to your field of study. Choosing a broad topic allows you to explore various aspects before narrowing down your focus.

Narrowing Down the Focus

Once you have a broad topic, conduct preliminary reading to identify specific issues or subtopics within that area. This step involves recognizing unexplored areas and evaluating existing literature. By doing so, you can pinpoint a specific problem or question that has not been adequately addressed.

Drafting the Research Question

With a narrowed focus, draft your research question. Ensure that it is clear, precise, and researchable. A well-formulated research question should guide your literature review and subsequent research activities. It should also be open-ended, allowing for comprehensive exploration and analysis.

Types of Research Questions

When formulating a research question, it's essential to understand the different types of questions you can ask. Each type serves a unique purpose and can guide your literature review in specific ways. Below, we explore three primary types of research questions: descriptive, comparative, and causal.

Common Mistakes to Avoid

When crafting a research question for your literature review, it's crucial to avoid several common pitfalls. Avoiding these mistakes will help ensure that your research is both meaningful and manageable.

Refining Your Research Question

Refining your research question is a crucial step in ensuring that your study is both focused and feasible. As you begin to investigate and evaluate scholarly literature on your topic, you may find it necessary to revise your original research question based on what you learn. Be sure to expand your literature search to include any new concepts you may identify along the way!

Tools and Techniques for Developing Research Questions

Developing a well-structured research question is crucial for a successful literature review. Here are some tools and techniques to help you in this process.

Brainstorming Methods

Start with a broad idea and narrow it down by brainstorming related concepts. This method allows you to explore various issues within your general area of interest. Try eliciting questions that present a puzzle or problem you are curious about.

Using Frameworks and Models

Frameworks and models can provide a structured approach to formulating your research question. They help in framing a research question systematically, depending on the topic, discipline, or type of question. For instance, the PICO (Population, Intervention, Comparison, Outcome) model is widely used in health sciences.

Consulting Academic Resources

Utilize academic resources such as online libraries, scholarly articles, and academic advisors. These resources offer valuable insights and examples of well-formulated research questions. Additionally, consider watching educational videos or attending workshops to enhance your understanding of the process.

Examples of Effective Research Questions

Case studies from various disciplines.

Examining case studies from different fields can provide valuable insights into what makes a research question effective. For instance, in the field of education, a well-crafted research question might be: "How does the integration of technology in the classroom impact student engagement and learning outcomes?" This question is specific, researchable, and addresses a significant issue in the field.

Analysis of Successful Research Questions

Analyzing successful research questions can help you understand the elements that contribute to their effectiveness. A good research question should be clear, focused, and complex enough to allow for adequate research and analysis. For example, in the field of public health, a successful research question might be: "What are the factors contributing to the rise of antibiotic-resistant bacteria in urban hospitals?" This question is not only relevant but also opens the door for further inquiry.

Lessons Learned from Examples

By studying examples of effective research questions, you can learn valuable lessons that can be applied to your own work. One key takeaway is that the research question should pinpoint the focus of the review . Your first step involves choosing, exploring, and focusing a topic. At this stage, you might discover gaps in the existing literature that your research can address. This iterative process of refinement ensures that your research question is both original and impactful.

Integrating the Research Question into the Literature Review

Your literature review should be guided by a central research question. Remember, it is not a collection of loosely related studies in a field but instead represents background and research developments related to a specific research question, interpreted and analyzed by you in a synthesized way.

Integrating the research question into your literature review is a crucial step in ensuring your thesis is both coherent and compelling. By aligning your research question with existing literature, you can identify gaps and establish a strong foundation for your study. If you're struggling with this process, our step-by-step Thesis Action Plan can guide you through each stage, making your thesis writing journey smoother and more efficient. Don't let anxiety and sleepless nights hold you back. Visit our website to learn more and claim your special offer now!

Crafting a well-defined research question is a pivotal step in conducting a literature review. It serves as the foundation upon which the entire review is built, guiding the selection of relevant literature and shaping the direction of the analysis. By following the comprehensive guidelines outlined in this article, researchers can ensure that their research questions are clear, focused, and researchable. This not only enhances the quality and coherence of the literature review but also contributes to the overall rigor and credibility of the research. As you embark on your literature review journey, remember that a meticulously formulated research question is your compass, leading you through the vast landscape of existing knowledge and helping you uncover valuable insights that advance your field of study.

Frequently Asked Questions

What is a research question in the context of a literature review.

A research question in a literature review is a clear, focused inquiry that guides the collection and analysis of literature on a particular topic. It helps to structure the review and ensures that the literature is relevant to the research objectives.

Why is a research question important for a literature review?

A research question is crucial because it directs the scope and focus of the literature review. It helps in identifying relevant studies, avoiding unnecessary information, and providing a clear path for the research process.

How do I identify a research gap?

Identifying a research gap involves recognizing unexplored or underexplored areas within the existing literature. This can be achieved by thoroughly evaluating current studies, noting inconsistencies, and highlighting areas that require further investigation.

What are the characteristics of a good research question?

A good research question should be clear, precise, relevant to the field of study, feasible to answer within the given scope, and significant enough to contribute to the existing body of knowledge.

What steps should I follow to formulate a research question?

To formulate a research question, start by choosing a broad topic, narrow down the focus by identifying specific aspects of the topic, and then draft a clear and concise question that addresses a gap or a specific area of interest within the topic.

What types of research questions can be used in literature reviews?

Research questions in literature reviews can be descriptive, aiming to describe characteristics or functions; comparative, seeking to compare different entities; or causal, aiming to determine cause-and-effect relationships.

What common mistakes should I avoid when writing a research question?

Avoid overly broad questions, questions with preconceived answers, and questions that lack originality. Ensure that your research question is specific, unbiased, and contributes new insights to the field.

How can I refine my research question?

Refine your research question by seeking feedback from peers and mentors, undergoing an iterative process of revision, and ensuring that it aligns with your overall research objectives and goals.

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How To Write A Literature Review - A Complete Guide

Table of Contents

A literature review is much more than just another section in your research paper. It forms the very foundation of your research. It is a formal piece of writing where you analyze the existing theoretical framework, principles, and assumptions and use that as a base to shape your approach to the research question.

Curating and drafting a solid literature review section not only lends more credibility to your research paper but also makes your research tighter and better focused. But, writing literature reviews is a difficult task. It requires extensive reading, plus you have to consider market trends and technological and political changes, which tend to change in the blink of an eye.

Now streamline your literature review process with the help of SciSpace Copilot. With this AI research assistant, you can efficiently synthesize and analyze a vast amount of information, identify key themes and trends, and uncover gaps in the existing research. Get real-time explanations, summaries, and answers to your questions for the paper you're reviewing, making navigating and understanding the complex literature landscape easier.

In this comprehensive guide, we will explore everything from the definition of a literature review, its appropriate length, various types of literature reviews, and how to write one.

What is a literature review?

A literature review is a collation of survey, research, critical evaluation, and assessment of the existing literature in a preferred domain.

Eminent researcher and academic Arlene Fink, in her book Conducting Research Literature Reviews , defines it as the following:

“A literature review surveys books, scholarly articles, and any other sources relevant to a particular issue, area of research, or theory, and by so doing, provides a description, summary, and critical evaluation of these works in relation to the research problem being investigated.

Literature reviews are designed to provide an overview of sources you have explored while researching a particular topic, and to demonstrate to your readers how your research fits within a larger field of study.”

Simply put, a literature review can be defined as a critical discussion of relevant pre-existing research around your research question and carving out a definitive place for your study in the existing body of knowledge. Literature reviews can be presented in multiple ways: a section of an article, the whole research paper itself, or a chapter of your thesis.

A literature review does function as a summary of sources, but it also allows you to analyze further, interpret, and examine the stated theories, methods, viewpoints, and, of course, the gaps in the existing content.

As an author, you can discuss and interpret the research question and its various aspects and debate your adopted methods to support the claim.

What is the purpose of a literature review?

A literature review is meant to help your readers understand the relevance of your research question and where it fits within the existing body of knowledge. As a researcher, you should use it to set the context, build your argument, and establish the need for your study.

What is the importance of a literature review?

The literature review is a critical part of research papers because it helps you:

• Gain an in-depth understanding of your research question and the surrounding area
• Convey that you have a thorough understanding of your research area and are up-to-date with the latest changes and advancements
• Establish how your research is connected or builds on the existing body of knowledge and how it could contribute to further research
• Elaborate on the validity and suitability of your theoretical framework and research methodology
• Identify and highlight gaps and shortcomings in the existing body of knowledge and how things need to change
• Convey to readers how your study is different or how it contributes to the research area

How long should a literature review be?

Ideally, the literature review should take up 15%-40% of the total length of your manuscript. So, if you have a 10,000-word research paper, the minimum word count could be 1500.

Your literature review format depends heavily on the kind of manuscript you are writing — an entire chapter in case of doctoral theses, a part of the introductory section in a research article, to a full-fledged review article that examines the previously published research on a topic.

Another determining factor is the type of research you are doing. The literature review section tends to be longer for secondary research projects than primary research projects.

What are the different types of literature reviews?

All literature reviews are not the same. There are a variety of possible approaches that you can take. It all depends on the type of research you are pursuing.

Here are the different types of literature reviews:

Argumentative review

It is called an argumentative review when you carefully present literature that only supports or counters a specific argument or premise to establish a viewpoint.

Integrative review

It is a type of literature review focused on building a comprehensive understanding of a topic by combining available theoretical frameworks and empirical evidence.

Methodological review

This approach delves into the ''how'' and the ''what" of the research question —  you cannot look at the outcome in isolation; you should also review the methodology used.

Systematic review

This form consists of an overview of existing evidence pertinent to a clearly formulated research question, which uses pre-specified and standardized methods to identify and critically appraise relevant research and collect, report, and analyze data from the studies included in the review.

Meta-analysis review

Meta-analysis uses statistical methods to summarize the results of independent studies. By combining information from all relevant studies, meta-analysis can provide more precise estimates of the effects than those derived from the individual studies included within a review.

Historical review

Historical literature reviews focus on examining research throughout a period, often starting with the first time an issue, concept, theory, or phenomenon emerged in the literature, then tracing its evolution within the scholarship of a discipline. The purpose is to place research in a historical context to show familiarity with state-of-the-art developments and identify future research's likely directions.

Theoretical Review

This form aims to examine the corpus of theory accumulated regarding an issue, concept, theory, and phenomenon. The theoretical literature review helps to establish what theories exist, the relationships between them, the degree the existing approaches have been investigated, and to develop new hypotheses to be tested.

Scoping Review

The Scoping Review is often used at the beginning of an article, dissertation, or research proposal. It is conducted before the research to highlight gaps in the existing body of knowledge and explains why the project should be greenlit.

State-of-the-Art Review

The State-of-the-Art review is conducted periodically, focusing on the most recent research. It describes what is currently known, understood, or agreed upon regarding the research topic and highlights where there are still disagreements.

Can you use the first person in a literature review?

When writing literature reviews, you should avoid the usage of first-person pronouns. It means that instead of "I argue that" or "we argue that," the appropriate expression would be "this research paper argues that."

Do you need an abstract for a literature review?

Ideally, yes. It is always good to have a condensed summary that is self-contained and independent of the rest of your review. As for how to draft one, you can follow the same fundamental idea when preparing an abstract for a literature review. It should also include:

• The research topic and your motivation behind selecting it
• A one-sentence thesis statement
• An explanation of the kinds of literature featured in the review
• Summary of what you've learned
• Conclusions you drew from the literature you reviewed
• Potential implications and future scope for research

Here's an example of the abstract of a literature review

Is a literature review written in the past tense?

Yes, the literature review should ideally be written in the past tense. You should not use the present or future tense when writing one. The exceptions are when you have statements describing events that happened earlier than the literature you are reviewing or events that are currently occurring; then, you can use the past perfect or present perfect tenses.

How many sources for a literature review?

There are multiple approaches to deciding how many sources to include in a literature review section. The first approach would be to look level you are at as a researcher. For instance, a doctoral thesis might need 60+ sources. In contrast, you might only need to refer to 5-15 sources at the undergraduate level.

The second approach is based on the kind of literature review you are doing — whether it is merely a chapter of your paper or if it is a self-contained paper in itself. When it is just a chapter, sources should equal the total number of pages in your article's body. In the second scenario, you need at least three times as many sources as there are pages in your work.

Quick tips on how to write a literature review

To know how to write a literature review, you must clearly understand its impact and role in establishing your work as substantive research material.

You need to follow the below-mentioned steps, to write a literature review:

• Outline the purpose behind the literature review
• Search relevant literature
• Examine and assess the relevant resources
• Discover connections by drawing deep insights from the resources
• Structure planning to write a good literature review

1. Outline and identify the purpose of  a literature review

As a first step on how to write a literature review, you must know what the research question or topic is and what shape you want your literature review to take. Ensure you understand the research topic inside out, or else seek clarifications. You must be able to the answer below questions before you start:

• How many sources do I need to include?
• What kind of sources should I analyze?
• How much should I critically evaluate each source?
• Should I summarize, synthesize or offer a critique of the sources?
• Do I need to include any background information or definitions?

Additionally, you should know that the narrower your research topic is, the swifter it will be for you to restrict the number of sources to be analyzed.

2. Search relevant literature

Dig deeper into search engines to discover what has already been published around your chosen topic. Make sure you thoroughly go through appropriate reference sources like books, reports, journal articles, government docs, and web-based resources.

You must prepare a list of keywords and their different variations. You can start your search from any library’s catalog, provided you are an active member of that institution. The exact keywords can be extended to widen your research over other databases and academic search engines like:

• Google Scholar
• Microsoft Academic
• Science.gov

Besides, it is not advisable to go through every resource word by word. Alternatively, what you can do is you can start by reading the abstract and then decide whether that source is relevant to your research or not.

Additionally, you must spend surplus time assessing the quality and relevance of resources. It would help if you tried preparing a list of citations to ensure that there lies no repetition of authors, publications, or articles in the literature review.

3. Examine and assess the sources

It is nearly impossible for you to go through every detail in the research article. So rather than trying to fetch every detail, you have to analyze and decide which research sources resemble closest and appear relevant to your chosen domain.

While analyzing the sources, you should look to find out answers to questions like:

• What question or problem has the author been describing and debating?
• What is the definition of critical aspects?
• How well the theories, approach, and methodology have been explained?
• Whether the research theory used some conventional or new innovative approach?
• How relevant are the key findings of the work?
• In what ways does it relate to other sources on the same topic?
• What challenges does this research paper pose to the existing theory
• What are the possible contributions or benefits it adds to the subject domain?

Be always mindful that you refer only to credible and authentic resources. It would be best if you always take references from different publications to validate your theory.

Always keep track of important information or data you can present in your literature review right from the beginning. It will help steer your path from any threats of plagiarism and also make it easier to curate an annotated bibliography or reference section.

4. Discover connections

At this stage, you must start deciding on the argument and structure of your literature review. To accomplish this, you must discover and identify the relations and connections between various resources while drafting your abstract.

A few aspects that you should be aware of while writing a literature review include:

• Rise to prominence: Theories and methods that have gained reputation and supporters over time.
• Constant scrutiny: Concepts or theories that repeatedly went under examination.
• Contradictions and conflicts: Theories, both the supporting and the contradictory ones, for the research topic.
• Knowledge gaps: What exactly does it fail to address, and how to bridge them with further research?
• Influential resources: Significant research projects available that have been upheld as milestones or perhaps, something that can modify the current trends

Once you join the dots between various past research works, it will be easier for you to draw a conclusion and identify your contribution to the existing knowledge base.

5. Structure planning to write a good literature review

There exist different ways towards planning and executing the structure of a literature review. The format of a literature review varies and depends upon the length of the research.

Like any other research paper, the literature review format must contain three sections: introduction, body, and conclusion. The goals and objectives of the research question determine what goes inside these three sections.

Nevertheless, a good literature review can be structured according to the chronological, thematic, methodological, or theoretical framework approach.

Literature review samples

1. Standalone

2. As a section of a research paper

How SciSpace Discover makes literature review a breeze?

SciSpace Discover is a one-stop solution to do an effective literature search and get barrier-free access to scientific knowledge. It is an excellent repository where you can find millions of only peer-reviewed articles and full-text PDF files. Here’s more on how you can use it:

Find the right information

Find what you want quickly and easily with comprehensive search filters that let you narrow down papers according to PDF availability, year of publishing, document type, and affiliated institution. Moreover, you can sort the results based on the publishing date, citation count, and relevance.

Assess credibility of papers quickly

When doing the literature review, it is critical to establish the quality of your sources. They form the foundation of your research. SciSpace Discover helps you assess the quality of a source by providing an overview of its references, citations, and performance metrics.

Get the complete picture in no time

SciSpace Discover’s personalized suggestion engine helps you stay on course and get the complete picture of the topic from one place. Every time you visit an article page, it provides you links to related papers. Besides that, it helps you understand what’s trending, who are the top authors, and who are the leading publishers on a topic.

Make referring sources super easy

To ensure you don't lose track of your sources, you must start noting down your references when doing the literature review. SciSpace Discover makes this step effortless. Click the 'cite' button on an article page, and you will receive preloaded citation text in multiple styles — all you've to do is copy-paste it into your manuscript.

Final tips on how to write a literature review

A massive chunk of time and effort is required to write a good literature review. But, if you go about it systematically, you'll be able to save a ton of time and build a solid foundation for your research.

We hope this guide has helped you answer several key questions you have about writing literature reviews.

Would you like to explore SciSpace Discover and kick off your literature search right away? You can get started here .

Frequently Asked Questions (FAQs)

1. how to start a literature review.

• What questions do you want to answer?

• What sources do you need to answer these questions?

• What information do these sources contain?

• How can you use this information to answer your questions?

2. What to include in a literature review?

• A brief background of the problem or issue

• What has previously been done to address the problem or issue

• A description of what you will do in your project

• How this study will contribute to research on the subject

3. Why literature review is important?

The literature review is an important part of any research project because it allows the writer to look at previous studies on a topic and determine existing gaps in the literature, as well as what has already been done. It will also help them to choose the most appropriate method for their own study.

4. How to cite a literature review in APA format?

To cite a literature review in APA style, you need to provide the author's name, the title of the article, and the year of publication. For example: Patel, A. B., & Stokes, G. S. (2012). The relationship between personality and intelligence: A meta-analysis of longitudinal research. Personality and Individual Differences, 53(1), 16-21

5. What are the components of a literature review?

• A brief introduction to the topic, including its background and context. The introduction should also include a rationale for why the study is being conducted and what it will accomplish.

• A description of the methodologies used in the study. This can include information about data collection methods, sample size, and statistical analyses.

• A presentation of the findings in an organized format that helps readers follow along with the author's conclusions.

6. What are common errors in writing literature review?

• Not spending enough time to critically evaluate the relevance of resources, observations and conclusions.

• Totally relying on secondary data while ignoring primary data.

• Letting your personal bias seep into your interpretation of existing literature.

• No detailed explanation of the procedure to discover and identify an appropriate literature review.

7. What are the 5 C's of writing literature review?

• Cite - the sources you utilized and referenced in your research.

• Compare - existing arguments, hypotheses, methodologies, and conclusions found in the knowledge base.

• Contrast - the arguments, topics, methodologies, approaches, and disputes that may be found in the literature.

• Critique - the literature and describe the ideas and opinions you find more convincing and why.

• Connect - the various studies you reviewed in your research.

8. How many sources should a literature review have?

When it is just a chapter, sources should equal the total number of pages in your article's body. if it is a self-contained paper in itself, you need at least three times as many sources as there are pages in your work.

9. Can literature review have diagrams?

• To represent an abstract idea or concept

• To explain the steps of a process or procedure

• To help readers understand the relationships between different concepts

10. How old should sources be in a literature review?

Sources for a literature review should be as current as possible or not older than ten years. The only exception to this rule is if you are reviewing a historical topic and need to use older sources.

11. What are the types of literature review?

• Argumentative review

• Integrative review

• Methodological review

• Systematic review

• Meta-analysis review

• Historical review

• Theoretical review

• Scoping review

• State-of-the-Art review

12. Is a literature review mandatory?

Yes. Literature review is a mandatory part of any research project. It is a critical step in the process that allows you to establish the scope of your research, and provide a background for the rest of your work.

But before you go,

• Six Online Tools for Easy Literature Review
• Evaluating literature review: systematic vs. scoping reviews
• Systematic Approaches to a Successful Literature Review
• Writing Integrative Literature Reviews: Guidelines and Examples

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Consensus GPT vs. SciSpace GPT: Choose the Best GPT for Research

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How To Write An A-Grade Literature Review

3 straightforward steps (with examples) + free template.

By: Derek Jansen (MBA) | Expert Reviewed By: Dr. Eunice Rautenbach | October 2019

Quality research is about building onto the existing work of others , “standing on the shoulders of giants”, as Newton put it. The literature review chapter of your dissertation, thesis or research project is where you synthesise this prior work and lay the theoretical foundation for your own research.

Long story short, this chapter is a pretty big deal, which is why you want to make sure you get it right . In this post, I’ll show you exactly how to write a literature review in three straightforward steps, so you can conquer this vital chapter (the smart way).

Overview: The Literature Review Process

• Understanding the “ why “
• Finding the relevant literature
• Cataloguing and synthesising the information
• Outlining & writing up your literature review
• Example of a literature review

But first, the “why”…

Before we unpack how to write the literature review chapter, we’ve got to look at the why . To put it bluntly, if you don’t understand the function and purpose of the literature review process, there’s no way you can pull it off well. So, what exactly is the purpose of the literature review?

Well, there are (at least) four core functions:

• For you to gain an understanding (and demonstrate this understanding) of where the research is at currently, what the key arguments and disagreements are.
• For you to identify the gap(s) in the literature and then use this as justification for your own research topic.
• To help you build a conceptual framework for empirical testing (if applicable to your research topic).
• To inform your methodological choices and help you source tried and tested questionnaires (for interviews ) and measurement instruments (for surveys ).

Most students understand the first point but don’t give any thought to the rest. To get the most from the literature review process, you must keep all four points front of mind as you review the literature (more on this shortly), or you’ll land up with a wonky foundation.

Okay – with the why out the way, let’s move on to the how . As mentioned above, writing your literature review is a process, which I’ll break down into three steps:

• Finding the most suitable literature
• Understanding , distilling and organising the literature
• Planning and writing up your literature review chapter

Importantly, you must complete steps one and two before you start writing up your chapter. I know it’s very tempting, but don’t try to kill two birds with one stone and write as you read. You’ll invariably end up wasting huge amounts of time re-writing and re-shaping, or you’ll just land up with a disjointed, hard-to-digest mess . Instead, you need to read first and distil the information, then plan and execute the writing.

Step 1: Find the relevant literature

Naturally, the first step in the literature review journey is to hunt down the existing research that’s relevant to your topic. While you probably already have a decent base of this from your research proposal , you need to expand on this substantially in the dissertation or thesis itself.

Essentially, you need to be looking for any existing literature that potentially helps you answer your research question (or develop it, if that’s not yet pinned down). There are numerous ways to find relevant literature, but I’ll cover my top four tactics here. I’d suggest combining all four methods to ensure that nothing slips past you:

Method 1 – Google Scholar Scrubbing

Google’s academic search engine, Google Scholar , is a great starting point as it provides a good high-level view of the relevant journal articles for whatever keyword you throw at it. Most valuably, it tells you how many times each article has been cited, which gives you an idea of how credible (or at least, popular) it is. Some articles will be free to access, while others will require an account, which brings us to the next method.

Method 2 – University Database Scrounging

Generally, universities provide students with access to an online library, which provides access to many (but not all) of the major journals.

So, if you find an article using Google Scholar that requires paid access (which is quite likely), search for that article in your university’s database – if it’s listed there, you’ll have access. Note that, generally, the search engine capabilities of these databases are poor, so make sure you search for the exact article name, or you might not find it.

Method 3 – Journal Article Snowballing

At the end of every academic journal article, you’ll find a list of references. As with any academic writing, these references are the building blocks of the article, so if the article is relevant to your topic, there’s a good chance a portion of the referenced works will be too. Do a quick scan of the titles and see what seems relevant, then search for the relevant ones in your university’s database.

Method 4 – Dissertation Scavenging

Similar to Method 3 above, you can leverage other students’ dissertations. All you have to do is skim through literature review chapters of existing dissertations related to your topic and you’ll find a gold mine of potential literature. Usually, your university will provide you with access to previous students’ dissertations, but you can also find a much larger selection in the following databases:

• Open Access Theses & Dissertations
• Stanford SearchWorks

Keep in mind that dissertations and theses are not as academically sound as published, peer-reviewed journal articles (because they’re written by students, not professionals), so be sure to check the credibility of any sources you find using this method. You can do this by assessing the citation count of any given article in Google Scholar. If you need help with assessing the credibility of any article, or with finding relevant research in general, you can chat with one of our Research Specialists .

Alright – with a good base of literature firmly under your belt, it’s time to move onto the next step.

Need a helping hand?

Step 2: Log, catalogue and synthesise

Once you’ve built a little treasure trove of articles, it’s time to get reading and start digesting the information – what does it all mean?

While I present steps one and two (hunting and digesting) as sequential, in reality, it’s more of a back-and-forth tango – you’ll read a little , then have an idea, spot a new citation, or a new potential variable, and then go back to searching for articles. This is perfectly natural – through the reading process, your thoughts will develop , new avenues might crop up, and directional adjustments might arise. This is, after all, one of the main purposes of the literature review process (i.e. to familiarise yourself with the current state of research in your field).

As you’re working through your treasure chest, it’s essential that you simultaneously start organising the information. There are three aspects to this:

• Logging reference information
• Building an organised catalogue
• Distilling and synthesising the information

I’ll discuss each of these below:

2.1 – Log the reference information

As you read each article, you should add it to your reference management software. I usually recommend Mendeley for this purpose (see the Mendeley 101 video below), but you can use whichever software you’re comfortable with. Most importantly, make sure you load EVERY article you read into your reference manager, even if it doesn’t seem very relevant at the time.

2.2 – Build an organised catalogue

In the beginning, you might feel confident that you can remember who said what, where, and what their main arguments were. Trust me, you won’t. If you do a thorough review of the relevant literature (as you must!), you’re going to read many, many articles, and it’s simply impossible to remember who said what, when, and in what context . Also, without the bird’s eye view that a catalogue provides, you’ll miss connections between various articles, and have no view of how the research developed over time. Simply put, it’s essential to build your own catalogue of the literature.

I would suggest using Excel to build your catalogue, as it allows you to run filters, colour code and sort – all very useful when your list grows large (which it will). How you lay your spreadsheet out is up to you, but I’d suggest you have the following columns (at minimum):

• Author, date, title – Start with three columns containing this core information. This will make it easy for you to search for titles with certain words, order research by date, or group by author.
• Categories or keywords – You can either create multiple columns, one for each category/theme and then tick the relevant categories, or you can have one column with keywords.
• Key arguments/points – Use this column to succinctly convey the essence of the article, the key arguments and implications thereof for your research.
• Context – Note the socioeconomic context in which the research was undertaken. For example, US-based, respondents aged 25-35, lower- income, etc. This will be useful for making an argument about gaps in the research.
• Methodology – Note which methodology was used and why. Also, note any issues you feel arise due to the methodology. Again, you can use this to make an argument about gaps in the research.
• Quotations – Note down any quoteworthy lines you feel might be useful later.
• Notes – Make notes about anything not already covered. For example, linkages to or disagreements with other theories, questions raised but unanswered, shortcomings or limitations, and so forth.

If you’d like, you can try out our free catalog template here (see screenshot below).

2.3 – Digest and synthesise

Most importantly, as you work through the literature and build your catalogue, you need to synthesise all the information in your own mind – how does it all fit together? Look for links between the various articles and try to develop a bigger picture view of the state of the research. Some important questions to ask yourself are:

• What answers does the existing research provide to my own research questions ?
• Which points do the researchers agree (and disagree) on?
• How has the research developed over time?
• Where do the gaps in the current research lie?

To help you develop a big-picture view and synthesise all the information, you might find mind mapping software such as Freemind useful. Alternatively, if you’re a fan of physical note-taking, investing in a large whiteboard might work for you.

Step 3: Outline and write it up!

Once you’re satisfied that you have digested and distilled all the relevant literature in your mind, it’s time to put pen to paper (or rather, fingers to keyboard). There are two steps here – outlining and writing:

3.1 – Draw up your outline

Having spent so much time reading, it might be tempting to just start writing up without a clear structure in mind. However, it’s critically important to decide on your structure and develop a detailed outline before you write anything. Your literature review chapter needs to present a clear, logical and an easy to follow narrative – and that requires some planning. Don’t try to wing it!

Naturally, you won’t always follow the plan to the letter, but without a detailed outline, you’re more than likely going to end up with a disjointed pile of waffle , and then you’re going to spend a far greater amount of time re-writing, hacking and patching. The adage, “measure twice, cut once” is very suitable here.

In terms of structure, the first decision you’ll have to make is whether you’ll lay out your review thematically (into themes) or chronologically (by date/period). The right choice depends on your topic, research objectives and research questions, which we discuss in this article .

Once that’s decided, you need to draw up an outline of your entire chapter in bullet point format. Try to get as detailed as possible, so that you know exactly what you’ll cover where, how each section will connect to the next, and how your entire argument will develop throughout the chapter. Also, at this stage, it’s a good idea to allocate rough word count limits for each section, so that you can identify word count problems before you’ve spent weeks or months writing!

PS – check out our free literature review chapter template…

3.2 – Get writing

With a detailed outline at your side, it’s time to start writing up (finally!). At this stage, it’s common to feel a bit of writer’s block and find yourself procrastinating under the pressure of finally having to put something on paper. To help with this, remember that the objective of the first draft is not perfection – it’s simply to get your thoughts out of your head and onto paper, after which you can refine them. The structure might change a little, the word count allocations might shift and shuffle, and you might add or remove a section – that’s all okay. Don’t worry about all this on your first draft – just get your thoughts down on paper.

Once you’ve got a full first draft (however rough it may be), step away from it for a day or two (longer if you can) and then come back at it with fresh eyes. Pay particular attention to the flow and narrative – does it fall fit together and flow from one section to another smoothly? Now’s the time to try to improve the linkage from each section to the next, tighten up the writing to be more concise, trim down word count and sand it down into a more digestible read.

Once you’ve done that, give your writing to a friend or colleague who is not a subject matter expert and ask them if they understand the overall discussion. The best way to assess this is to ask them to explain the chapter back to you. This technique will give you a strong indication of which points were clearly communicated and which weren’t. If you’re working with Grad Coach, this is a good time to have your Research Specialist review your chapter.

Finally, tighten it up and send it off to your supervisor for comment. Some might argue that you should be sending your work to your supervisor sooner than this (indeed your university might formally require this), but in my experience, supervisors are extremely short on time (and often patience), so, the more refined your chapter is, the less time they’ll waste on addressing basic issues (which you know about already) and the more time they’ll spend on valuable feedback that will increase your mark-earning potential.

Literature Review Example

In the video below, we unpack an actual literature review so that you can see how all the core components come together in reality.

Let’s Recap

In this post, we’ve covered how to research and write up a high-quality literature review chapter. Let’s do a quick recap of the key takeaways:

• It is essential to understand the WHY of the literature review before you read or write anything. Make sure you understand the 4 core functions of the process.
• The first step is to hunt down the relevant literature . You can do this using Google Scholar, your university database, the snowballing technique and by reviewing other dissertations and theses.
• Next, you need to log all the articles in your reference manager , build your own catalogue of literature and synthesise all the research.
• Following that, you need to develop a detailed outline of your entire chapter – the more detail the better. Don’t start writing without a clear outline (on paper, not in your head!)
• Write up your first draft in rough form – don’t aim for perfection. Remember, done beats perfect.
• Refine your second draft and get a layman’s perspective on it . Then tighten it up and submit it to your supervisor.

Psst… there’s more!

This post is an extract from our bestselling short course, Literature Review Bootcamp . If you want to work smart, you don't want to miss this .

38 Comments

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You’re welcome, Yinka. Thank you for the kind words. All the best writing your literature review.

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Thank you so much Derek for such useful information on writing up a good literature review. I am at a stage where I need to start writing my one. My proposal was accepted late last year but I honestly did not know where to start

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Thank you. I requested to download the free literature review template, however, your website wouldn’t allow me to complete the request or complete a download. May I request that you email me the free template? Thank you.

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• Print Friendly

How to Write a Literature Review - A Self-Guided Tutorial

• Literature Reviews: A Recap
• Reading Journal Articles
• Does it describe a Literature Review?
• 1. Identify the question
• 2. Review discipline styles
• Searching article databases - video
• Finding the article full-text
• Citation trails
• When to stop searching
• Citation Managers
• 5. Critically analyze and evaluate
• 6. Synthesize
• 7. Write literature review
• Additional Resources

You can meet with a librarian to talk about your literature review, or other library-related topics.

Identify the question

In some cases, such as for a course assignment or a research project you're working on with a faculty mentor, your research question will be determined by your professor. If that's the case, you can move on to the next step . Otherwise, you may need to explore questions on your own.

A few suggestions to help:

Developing a Research Question

Detailed description of, "Developing a Research Question"

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What is a Literature Review? How to Write It (with Examples)

A literature review is a critical analysis and synthesis of existing research on a particular topic. It provides an overview of the current state of knowledge, identifies gaps, and highlights key findings in the literature. 1 The purpose of a literature review is to situate your own research within the context of existing scholarship, demonstrating your understanding of the topic and showing how your work contributes to the ongoing conversation in the field. Learning how to write a literature review is a critical tool for successful research. Your ability to summarize and synthesize prior research pertaining to a certain topic demonstrates your grasp on the topic of study, and assists in the learning process. 

Table of Contents

• What is the purpose of literature review? 
• a. Habitat Loss and Species Extinction: 
• b. Range Shifts and Phenological Changes: 
• c. Ocean Acidification and Coral Reefs: 
• d. Adaptive Strategies and Conservation Efforts: 

How to write a good literature review 

• Choose a Topic and Define the Research Question: 
• Decide on the Scope of Your Review: 
• Select Databases for Searches: 
• Conduct Searches and Keep Track: 
• Review the Literature: 
• Organize and Write Your Literature Review: 
• How to write a literature review faster with Paperpal? 
• Frequently asked questions 

What is a literature review?

A well-conducted literature review demonstrates the researcher’s familiarity with the existing literature, establishes the context for their own research, and contributes to scholarly conversations on the topic. One of the purposes of a literature review is also to help researchers avoid duplicating previous work and ensure that their research is informed by and builds upon the existing body of knowledge.

What is the purpose of literature review?

A literature review serves several important purposes within academic and research contexts. Here are some key objectives and functions of a literature review: 2  

1. Contextualizing the Research Problem: The literature review provides a background and context for the research problem under investigation. It helps to situate the study within the existing body of knowledge. 

2. Identifying Gaps in Knowledge: By identifying gaps, contradictions, or areas requiring further research, the researcher can shape the research question and justify the significance of the study. This is crucial for ensuring that the new research contributes something novel to the field. 

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3. Understanding Theoretical and Conceptual Frameworks: Literature reviews help researchers gain an understanding of the theoretical and conceptual frameworks used in previous studies. This aids in the development of a theoretical framework for the current research. 

4. Providing Methodological Insights: Another purpose of literature reviews is that it allows researchers to learn about the methodologies employed in previous studies. This can help in choosing appropriate research methods for the current study and avoiding pitfalls that others may have encountered. 

5. Establishing Credibility: A well-conducted literature review demonstrates the researcher’s familiarity with existing scholarship, establishing their credibility and expertise in the field. It also helps in building a solid foundation for the new research. 

6. Informing Hypotheses or Research Questions: The literature review guides the formulation of hypotheses or research questions by highlighting relevant findings and areas of uncertainty in existing literature. 

Literature review example

Let’s delve deeper with a literature review example: Let’s say your literature review is about the impact of climate change on biodiversity. You might format your literature review into sections such as the effects of climate change on habitat loss and species extinction, phenological changes, and marine biodiversity. Each section would then summarize and analyze relevant studies in those areas, highlighting key findings and identifying gaps in the research. The review would conclude by emphasizing the need for further research on specific aspects of the relationship between climate change and biodiversity. The following literature review template provides a glimpse into the recommended literature review structure and content, demonstrating how research findings are organized around specific themes within a broader topic. 

Literature Review on Climate Change Impacts on Biodiversity:

Climate change is a global phenomenon with far-reaching consequences, including significant impacts on biodiversity. This literature review synthesizes key findings from various studies: 

a. Habitat Loss and Species Extinction:

Climate change-induced alterations in temperature and precipitation patterns contribute to habitat loss, affecting numerous species (Thomas et al., 2004). The review discusses how these changes increase the risk of extinction, particularly for species with specific habitat requirements. 

b. Range Shifts and Phenological Changes:

Observations of range shifts and changes in the timing of biological events (phenology) are documented in response to changing climatic conditions (Parmesan & Yohe, 2003). These shifts affect ecosystems and may lead to mismatches between species and their resources. 

c. Ocean Acidification and Coral Reefs:

The review explores the impact of climate change on marine biodiversity, emphasizing ocean acidification’s threat to coral reefs (Hoegh-Guldberg et al., 2007). Changes in pH levels negatively affect coral calcification, disrupting the delicate balance of marine ecosystems. 

d. Adaptive Strategies and Conservation Efforts:

Recognizing the urgency of the situation, the literature review discusses various adaptive strategies adopted by species and conservation efforts aimed at mitigating the impacts of climate change on biodiversity (Hannah et al., 2007). It emphasizes the importance of interdisciplinary approaches for effective conservation planning. 

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Writing a literature review involves summarizing and synthesizing existing research on a particular topic. A good literature review format should include the following elements. 

Introduction: The introduction sets the stage for your literature review, providing context and introducing the main focus of your review. 

• Opening Statement: Begin with a general statement about the broader topic and its significance in the field. 
• Scope and Purpose: Clearly define the scope of your literature review. Explain the specific research question or objective you aim to address. 
• Organizational Framework: Briefly outline the structure of your literature review, indicating how you will categorize and discuss the existing research. 
• Significance of the Study: Highlight why your literature review is important and how it contributes to the understanding of the chosen topic. 
• Thesis Statement: Conclude the introduction with a concise thesis statement that outlines the main argument or perspective you will develop in the body of the literature review. 

Body: The body of the literature review is where you provide a comprehensive analysis of existing literature, grouping studies based on themes, methodologies, or other relevant criteria. 

• Organize by Theme or Concept: Group studies that share common themes, concepts, or methodologies. Discuss each theme or concept in detail, summarizing key findings and identifying gaps or areas of disagreement. 
• Critical Analysis: Evaluate the strengths and weaknesses of each study. Discuss the methodologies used, the quality of evidence, and the overall contribution of each work to the understanding of the topic. 
• Synthesis of Findings: Synthesize the information from different studies to highlight trends, patterns, or areas of consensus in the literature. 
• Identification of Gaps: Discuss any gaps or limitations in the existing research and explain how your review contributes to filling these gaps. 
• Transition between Sections: Provide smooth transitions between different themes or concepts to maintain the flow of your literature review. 

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Conclusion: The conclusion of your literature review should summarize the main findings, highlight the contributions of the review, and suggest avenues for future research. 

• Summary of Key Findings: Recap the main findings from the literature and restate how they contribute to your research question or objective. 
• Contributions to the Field: Discuss the overall contribution of your literature review to the existing knowledge in the field. 
• Implications and Applications: Explore the practical implications of the findings and suggest how they might impact future research or practice. 
• Recommendations for Future Research: Identify areas that require further investigation and propose potential directions for future research in the field. 
• Final Thoughts: Conclude with a final reflection on the importance of your literature review and its relevance to the broader academic community. 

Conducting a literature review

Conducting a literature review is an essential step in research that involves reviewing and analyzing existing literature on a specific topic. It’s important to know how to do a literature review effectively, so here are the steps to follow: 1  

Choose a Topic and Define the Research Question:

• Select a topic that is relevant to your field of study. 
• Clearly define your research question or objective. Determine what specific aspect of the topic do you want to explore? 

Decide on the Scope of Your Review:

• Determine the timeframe for your literature review. Are you focusing on recent developments, or do you want a historical overview? 
• Consider the geographical scope. Is your review global, or are you focusing on a specific region? 
• Define the inclusion and exclusion criteria. What types of sources will you include? Are there specific types of studies or publications you will exclude? 

Select Databases for Searches:

• Identify relevant databases for your field. Examples include PubMed, IEEE Xplore, Scopus, Web of Science, and Google Scholar. 
• Consider searching in library catalogs, institutional repositories, and specialized databases related to your topic. 

Conduct Searches and Keep Track:

• Develop a systematic search strategy using keywords, Boolean operators (AND, OR, NOT), and other search techniques. 
• Record and document your search strategy for transparency and replicability. 
• Keep track of the articles, including publication details, abstracts, and links. Use citation management tools like EndNote, Zotero, or Mendeley to organize your references. 

Review the Literature:

• Evaluate the relevance and quality of each source. Consider the methodology, sample size, and results of studies. 
• Organize the literature by themes or key concepts. Identify patterns, trends, and gaps in the existing research. 
• Summarize key findings and arguments from each source. Compare and contrast different perspectives. 
• Identify areas where there is a consensus in the literature and where there are conflicting opinions. 
• Provide critical analysis and synthesis of the literature. What are the strengths and weaknesses of existing research? 

Organize and Write Your Literature Review:

• Literature review outline should be based on themes, chronological order, or methodological approaches. 
• Write a clear and coherent narrative that synthesizes the information gathered. 
• Use proper citations for each source and ensure consistency in your citation style (APA, MLA, Chicago, etc.). 
• Conclude your literature review by summarizing key findings, identifying gaps, and suggesting areas for future research. 

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How to write a literature review faster with Paperpal?

Paperpal, an AI writing assistant, integrates powerful academic search capabilities within its writing platform. With the Research feature, you get 100% factual insights, with citations backed by 250M+ verified research articles, directly within your writing interface with the option to save relevant references in your Citation Library. By eliminating the need to switch tabs to find answers to all your research questions, Paperpal saves time and helps you stay focused on your writing.   

Here’s how to use the Research feature:  

• Ask a question: Get started with a new document on paperpal.com. Click on the “Research” feature and type your question in plain English. Paperpal will scour over 250 million research articles, including conference papers and preprints, to provide you with accurate insights and citations. 
• Review and Save: Paperpal summarizes the information, while citing sources and listing relevant reads. You can quickly scan the results to identify relevant references and save these directly to your built-in citations library for later access. 
• Cite with Confidence: Paperpal makes it easy to incorporate relevant citations and references into your writing, ensuring your arguments are well-supported by credible sources. This translates to a polished, well-researched literature review. 

The literature review sample and detailed advice on writing and conducting a review will help you produce a well-structured report. But remember that a good literature review is an ongoing process, and it may be necessary to revisit and update it as your research progresses. By combining effortless research with an easy citation process, Paperpal Research streamlines the literature review process and empowers you to write faster and with more confidence. Try Paperpal Research now and see for yourself.  

Frequently asked questions

A literature review is a critical and comprehensive analysis of existing literature (published and unpublished works) on a specific topic or research question and provides a synthesis of the current state of knowledge in a particular field. A well-conducted literature review is crucial for researchers to build upon existing knowledge, avoid duplication of efforts, and contribute to the advancement of their field. It also helps researchers situate their work within a broader context and facilitates the development of a sound theoretical and conceptual framework for their studies.

Literature review is a crucial component of research writing, providing a solid background for a research paper’s investigation. The aim is to keep professionals up to date by providing an understanding of ongoing developments within a specific field, including research methods, and experimental techniques used in that field, and present that knowledge in the form of a written report. Also, the depth and breadth of the literature review emphasizes the credibility of the scholar in his or her field.  

Before writing a literature review, it’s essential to undertake several preparatory steps to ensure that your review is well-researched, organized, and focused. This includes choosing a topic of general interest to you and doing exploratory research on that topic, writing an annotated bibliography, and noting major points, especially those that relate to the position you have taken on the topic. 

Literature reviews and academic research papers are essential components of scholarly work but serve different purposes within the academic realm. 3 A literature review aims to provide a foundation for understanding the current state of research on a particular topic, identify gaps or controversies, and lay the groundwork for future research. Therefore, it draws heavily from existing academic sources, including books, journal articles, and other scholarly publications. In contrast, an academic research paper aims to present new knowledge, contribute to the academic discourse, and advance the understanding of a specific research question. Therefore, it involves a mix of existing literature (in the introduction and literature review sections) and original data or findings obtained through research methods. 

Literature reviews are essential components of academic and research papers, and various strategies can be employed to conduct them effectively. If you want to know how to write a literature review for a research paper, here are four common approaches that are often used by researchers.  Chronological Review: This strategy involves organizing the literature based on the chronological order of publication. It helps to trace the development of a topic over time, showing how ideas, theories, and research have evolved.  Thematic Review: Thematic reviews focus on identifying and analyzing themes or topics that cut across different studies. Instead of organizing the literature chronologically, it is grouped by key themes or concepts, allowing for a comprehensive exploration of various aspects of the topic.  Methodological Review: This strategy involves organizing the literature based on the research methods employed in different studies. It helps to highlight the strengths and weaknesses of various methodologies and allows the reader to evaluate the reliability and validity of the research findings.  Theoretical Review: A theoretical review examines the literature based on the theoretical frameworks used in different studies. This approach helps to identify the key theories that have been applied to the topic and assess their contributions to the understanding of the subject.  It’s important to note that these strategies are not mutually exclusive, and a literature review may combine elements of more than one approach. The choice of strategy depends on the research question, the nature of the literature available, and the goals of the review. Additionally, other strategies, such as integrative reviews or systematic reviews, may be employed depending on the specific requirements of the research.

The literature review format can vary depending on the specific publication guidelines. However, there are some common elements and structures that are often followed. Here is a general guideline for the format of a literature review:  Introduction:   Provide an overview of the topic.  Define the scope and purpose of the literature review.  State the research question or objective.  Body:   Organize the literature by themes, concepts, or chronology.  Critically analyze and evaluate each source.  Discuss the strengths and weaknesses of the studies.  Highlight any methodological limitations or biases.  Identify patterns, connections, or contradictions in the existing research.  Conclusion:   Summarize the key points discussed in the literature review.  Highlight the research gap.  Address the research question or objective stated in the introduction.  Highlight the contributions of the review and suggest directions for future research.

Both annotated bibliographies and literature reviews involve the examination of scholarly sources. While annotated bibliographies focus on individual sources with brief annotations, literature reviews provide a more in-depth, integrated, and comprehensive analysis of existing literature on a specific topic. The key differences are as follows: 

References 

• Denney, A. S., & Tewksbury, R. (2013). How to write a literature review.  Journal of criminal justice education ,  24 (2), 218-234. 
• Pan, M. L. (2016).  Preparing literature reviews: Qualitative and quantitative approaches . Taylor & Francis. 
• Cantero, C. (2019). How to write a literature review.  San José State University Writing Center . 

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Clarifying the review question leads to specifying what type of studies can best address that question and setting out criteria for including such studies in the review. This is often called inclusion criteria or eligibility criteria. The criteria could relate to the review topic, the research methods of the studies, specific populations, settings, date limits, geographical areas, types of interventions, or something else.

Systematic reviews address clear and answerable research questions, rather than a general topic or problem of interest. They also have clear criteria about the studies that are being used to address the research questions. This is often called inclusion criteria or eligibility criteria.

Six examples of types of question are listed below, and the examples show different questions that a review might address based on the topic of influenza vaccination. Structuring questions in this way aids thinking about the different types of research that could address each type of question. Mneumonics can help in thinking about criteria that research must fulfil to address the question. The criteria could relate to the context, research methods of the studies, specific populations, settings, date limits, geographical areas, types of interventions, or something else.

Examples of review questions

• Needs - What do people want? Example: What are the information needs of healthcare workers regarding vaccination for seasonal influenza?
• Impact or effectiveness - What is the balance of benefit and harm of a given intervention? Example: What is the effectiveness of strategies to increase vaccination coverage among healthcare workers. What is the cost effectiveness of interventions that increase immunisation coverage?
• Process or explanation - Why does it work (or not work)? How does it work (or not work)?  Example: What factors are associated with uptake of vaccinations by healthcare workers?  What factors are associated with inequities in vaccination among healthcare workers?
• Correlation - What relationships are seen between phenomena? Example: How does influenza vaccination of healthcare workers vary with morbidity and mortality among patients? (Note: correlation does not in itself indicate causation).
• Views / perspectives - What are people's experiences? Example: What are the views and experiences of healthcare workers regarding vaccination for seasonal influenza?
• Service implementation - What is happening? Example: What is known about the implementation and context of interventions to promote vaccination for seasonal influenza among healthcare workers?

Examples in practice :  Seasonal influenza vaccination of health care workers: evidence synthesis / Loreno et al. 2017

Example of eligibility criteria

Research question: What are the views and experiences of UK healthcare workers regarding vaccination for seasonal influenza?

• Population: healthcare workers, any type, including those without direct contact with patients.
• Context: seasonal influenza vaccination for healthcare workers.
• Study design: qualitative data including interviews, focus groups, ethnographic data.
• Date of publication: all.
• Country: all UK regions.
• Studies focused on influenza vaccination for general population and pandemic influenza vaccination.
• Studies using survey data with only closed questions, studies that only report quantitative data.

Consider the research boundaries

It is important to consider the reasons that the research question is being asked. Any research question has ideological and theoretical assumptions around the meanings and processes it is focused on. A systematic review should either specify definitions and boundaries around these elements at the outset, or be clear about which elements are undefined. 

For example if we are interested in the topic of homework, there are likely to be pre-conceived ideas about what is meant by 'homework'. If we want to know the impact of homework on educational attainment, we need to set boundaries on the age range of children, or how educational attainment is measured. There may also be a particular setting or contexts: type of school, country, gender, the timeframe of the literature, or the study designs of the research.

Research question: What is the impact of homework on children's educational attainment?

• Scope : Homework - Tasks set by school teachers for students to complete out of school time, in any format or setting.
• Population: children aged 5-11 years.
• Outcomes: measures of literacy or numeracy from tests administered by researchers, school or other authorities.
• Study design: Studies with a comparison control group.
• Context: OECD countries, all settings within mainstream education.
• Date Limit: 2007 onwards.
• Any context not in mainstream primary schools.
• Non-English language studies.

Mnemonics for structuring questions

Some mnemonics that sometimes help to formulate research questions, set the boundaries of question and inform a search strategy.

Intervention effects

PICO  Population – Intervention– Outcome– Comparison

Variations: add T on for time, or ‘C’ for context, or S’ for study type,

Policy and management issues

ECLIPSE : Expectation – Client group – Location – Impact ‐ Professionals involved – Service

Expectation encourages  reflection on what the information is needed for i.e. improvement, innovation or information.  Impact looks at what  you would like to achieve e.g. improve team communication .

• How CLIP became ECLIPSE: a mnemonic to assist in searching for health policy/management information / Wildridge & Bell, 2002

Analysis tool for management and organisational strategy

PESTLE:  Political – Economic – Social – Technological – Environmental ‐ Legal

An analysis tool that can be used by organizations for identifying external factors which may influence their strategic development, marketing strategies, new technologies or organisational change.

• PESTLE analysis / CIPD, 2010

Service evaluations with qualitative study designs

SPICE:  Setting (context) – Perspective– Intervention – Comparison – Evaluation

Perspective relates to users or potential users. Evaluation is how you plan to measure the success of the intervention.

• Clear and present questions: formulating questions for evidence based practice / Booth, 2006

Read more about some of the frameworks for constructing review questions:

• Formulating the Evidence Based Practice Question: A Review of the Frameworks / Davis, 2011
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What is a literature review?

A literature review is an integrated analysis -- not just a summary-- of scholarly writings and other relevant evidence related directly to your research question.  That is, it represents a synthesis of the evidence that provides background information on your topic and shows a association between the evidence and your research question.

A literature review may be a stand alone work or the introduction to a larger research paper, depending on the assignment.  Rely heavily on the guidelines your instructor has given you.

Why is it important?

A literature review is important because it:

• Explains the background of research on a topic.
• Demonstrates why a topic is significant to a subject area.
• Discovers relationships between research studies/ideas.
• Identifies major themes, concepts, and researchers on a topic.
• Identifies critical gaps and points of disagreement.
• Discusses further research questions that logically come out of the previous studies.

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1. Choose a topic. Define your research question.

Your literature review should be guided by your central research question.  The literature represents background and research developments related to a specific research question, interpreted and analyzed by you in a synthesized way.

• Make sure your research question is not too broad or too narrow.  Is it manageable?
• Begin writing down terms that are related to your question. These will be useful for searches later.
• If you have the opportunity, discuss your topic with your professor and your class mates.

2. Decide on the scope of your review

How many studies do you need to look at? How comprehensive should it be? How many years should it cover? 

• This may depend on your assignment.  How many sources does the assignment require?

3. Select the databases you will use to conduct your searches.

Make a list of the databases you will search. 

Where to find databases:

• use the tabs on this guide
• Find other databases in the Nursing Information Resources web page
• More on the Medical Library web page
• ... and more on the Yale University Library web page

4. Conduct your searches to find the evidence. Keep track of your searches.

• Use the key words in your question, as well as synonyms for those words, as terms in your search. Use the database tutorials for help.
• Save the searches in the databases. This saves time when you want to redo, or modify, the searches. It is also helpful to use as a guide is the searches are not finding any useful results.
• Review the abstracts of research studies carefully. This will save you time.
• Use the bibliographies and references of research studies you find to locate others.
• Check with your professor, or a subject expert in the field, if you are missing any key works in the field.
• Ask your librarian for help at any time.
• Use a citation manager, such as EndNote as the repository for your citations. See the EndNote tutorials for help.

Review the literature

Some questions to help you analyze the research:

• What was the research question of the study you are reviewing? What were the authors trying to discover?
• Was the research funded by a source that could influence the findings?
• What were the research methodologies? Analyze its literature review, the samples and variables used, the results, and the conclusions.
• Does the research seem to be complete? Could it have been conducted more soundly? What further questions does it raise?
• If there are conflicting studies, why do you think that is?
• How are the authors viewed in the field? Has this study been cited? If so, how has it been analyzed?

Tips: 

• Review the abstracts carefully.  
• Keep careful notes so that you may track your thought processes during the research process.
• Create a matrix of the studies for easy analysis, and synthesis, across all of the studies.
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About Research Questions

A well-formulated research question:

• starts your entire search process
• provides focus for your searches
• guides the selection of literature sources

You may need to find answers to background questions (i.e. about general knowledge) before forming a research question.

Learn more about how to develop research topics into a researchable question .

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Writing a Literature Review

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A literature review is a document or section of a document that collects key sources on a topic and discusses those sources in conversation with each other (also called synthesis ). The lit review is an important genre in many disciplines, not just literature (i.e., the study of works of literature such as novels and plays). When we say “literature review” or refer to “the literature,” we are talking about the research ( scholarship ) in a given field. You will often see the terms “the research,” “the scholarship,” and “the literature” used mostly interchangeably.

Where, when, and why would I write a lit review?

There are a number of different situations where you might write a literature review, each with slightly different expectations; different disciplines, too, have field-specific expectations for what a literature review is and does. For instance, in the humanities, authors might include more overt argumentation and interpretation of source material in their literature reviews, whereas in the sciences, authors are more likely to report study designs and results in their literature reviews; these differences reflect these disciplines’ purposes and conventions in scholarship. You should always look at examples from your own discipline and talk to professors or mentors in your field to be sure you understand your discipline’s conventions, for literature reviews as well as for any other genre.

A literature review can be a part of a research paper or scholarly article, usually falling after the introduction and before the research methods sections. In these cases, the lit review just needs to cover scholarship that is important to the issue you are writing about; sometimes it will also cover key sources that informed your research methodology.

Lit reviews can also be standalone pieces, either as assignments in a class or as publications. In a class, a lit review may be assigned to help students familiarize themselves with a topic and with scholarship in their field, get an idea of the other researchers working on the topic they’re interested in, find gaps in existing research in order to propose new projects, and/or develop a theoretical framework and methodology for later research. As a publication, a lit review usually is meant to help make other scholars’ lives easier by collecting and summarizing, synthesizing, and analyzing existing research on a topic. This can be especially helpful for students or scholars getting into a new research area, or for directing an entire community of scholars toward questions that have not yet been answered.

What are the parts of a lit review?

Most lit reviews use a basic introduction-body-conclusion structure; if your lit review is part of a larger paper, the introduction and conclusion pieces may be just a few sentences while you focus most of your attention on the body. If your lit review is a standalone piece, the introduction and conclusion take up more space and give you a place to discuss your goals, research methods, and conclusions separately from where you discuss the literature itself.

Introduction:

• An introductory paragraph that explains what your working topic and thesis is
• A forecast of key topics or texts that will appear in the review
• Potentially, a description of how you found sources and how you analyzed them for inclusion and discussion in the review (more often found in published, standalone literature reviews than in lit review sections in an article or research paper)
• Summarize and synthesize: Give an overview of the main points of each source and combine them into a coherent whole
• Analyze and interpret: Don’t just paraphrase other researchers – add your own interpretations where possible, discussing the significance of findings in relation to the literature as a whole
• Critically Evaluate: Mention the strengths and weaknesses of your sources
• Write in well-structured paragraphs: Use transition words and topic sentence to draw connections, comparisons, and contrasts.

Conclusion:

• Summarize the key findings you have taken from the literature and emphasize their significance
• Connect it back to your primary research question

How should I organize my lit review?

Lit reviews can take many different organizational patterns depending on what you are trying to accomplish with the review. Here are some examples:

• Chronological : The simplest approach is to trace the development of the topic over time, which helps familiarize the audience with the topic (for instance if you are introducing something that is not commonly known in your field). If you choose this strategy, be careful to avoid simply listing and summarizing sources in order. Try to analyze the patterns, turning points, and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred (as mentioned previously, this may not be appropriate in your discipline — check with a teacher or mentor if you’re unsure).
• Thematic : If you have found some recurring central themes that you will continue working with throughout your piece, you can organize your literature review into subsections that address different aspects of the topic. For example, if you are reviewing literature about women and religion, key themes can include the role of women in churches and the religious attitude towards women.
• Qualitative versus quantitative research
• Empirical versus theoretical scholarship
• Divide the research by sociological, historical, or cultural sources
• Theoretical : In many humanities articles, the literature review is the foundation for the theoretical framework. You can use it to discuss various theories, models, and definitions of key concepts. You can argue for the relevance of a specific theoretical approach or combine various theorical concepts to create a framework for your research.

What are some strategies or tips I can use while writing my lit review?

Any lit review is only as good as the research it discusses; make sure your sources are well-chosen and your research is thorough. Don’t be afraid to do more research if you discover a new thread as you’re writing. More info on the research process is available in our "Conducting Research" resources .

As you’re doing your research, create an annotated bibliography ( see our page on the this type of document ). Much of the information used in an annotated bibliography can be used also in a literature review, so you’ll be not only partially drafting your lit review as you research, but also developing your sense of the larger conversation going on among scholars, professionals, and any other stakeholders in your topic.

Usually you will need to synthesize research rather than just summarizing it. This means drawing connections between sources to create a picture of the scholarly conversation on a topic over time. Many student writers struggle to synthesize because they feel they don’t have anything to add to the scholars they are citing; here are some strategies to help you:

• It often helps to remember that the point of these kinds of syntheses is to show your readers how you understand your research, to help them read the rest of your paper.
• Writing teachers often say synthesis is like hosting a dinner party: imagine all your sources are together in a room, discussing your topic. What are they saying to each other?
• Look at the in-text citations in each paragraph. Are you citing just one source for each paragraph? This usually indicates summary only. When you have multiple sources cited in a paragraph, you are more likely to be synthesizing them (not always, but often
• Read more about synthesis here.

The most interesting literature reviews are often written as arguments (again, as mentioned at the beginning of the page, this is discipline-specific and doesn’t work for all situations). Often, the literature review is where you can establish your research as filling a particular gap or as relevant in a particular way. You have some chance to do this in your introduction in an article, but the literature review section gives a more extended opportunity to establish the conversation in the way you would like your readers to see it. You can choose the intellectual lineage you would like to be part of and whose definitions matter most to your thinking (mostly humanities-specific, but this goes for sciences as well). In addressing these points, you argue for your place in the conversation, which tends to make the lit review more compelling than a simple reporting of other sources.

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Advanced literature search and systematic reviews.

• Introduction

Formulate your question

Using frameworks to structure your question, selecting a framework, inclusion and exclusion criteria, the scoping search.

• Videos and Support
• Step 2 - Develop a search strategy
• Step 3 - Selecting databases
• Step 4 - Develop your protocol
• Step 5 - Perform your search
• Step 6 - Searching grey literature
• Step 7 - Manage your results
• Step 8 - Analyse and understand your results
• Step 9 - Write your methodology
• Videos and support

Formulating a clear, well-defined, relevant and answerable research question is essential to finding the best evidence for your topic. On this page we outline the approaches to developing a research question that can be used as the basis for a review. 

Frameworks have been designed to help you structure research questions and identify the main concepts you want to focus on. Your topic may not fit perfectly into one of the frameworks listed on this page, but just using part of a framework can be sufficient.

The framework you should use depends on the type of question you will be researching.

A framework used for formulating a clinical research question, i.e. questions covering the effectiveness of an intervention, treatment, etc. 

Extensions to PICO

If your topic has additional concepts, there are extensions to the PICO framework that you can use: 

PICOS - S stands for study design.  Use this framework if you are only interested in examining specific designs of study. 

PICOT - T  stands for timeframe.  Use this framework if your outcomes need to be measured in a certain amount of time, e.g. 24 hours after surgery. 

PICOC - C stands for context.  Use this framework if you are focussing on a particular organisation or circumstances or scenario. 

A framework used for questions relating to prognosis issues. 

A framework used for questions relating to the prevalence / incidence of a condition.

Used for questions relating to cost effectiveness, economic evaluations and service improvements.

Used for questions relating to cost effectiveness, economic evaluations, and service improvements.

Used for qualitative questions evaluating experiences and meaningfulness 

For quantitative and qualitative questions evaluating experiences, and meaningfulness.

Used for qualitative questions evaluating experiences and meaningfulness.

Framework used for qualitative questions evaluating experiences and meaningfulness.

When you formulate a research question you also need to consider your inclusion and exclusion criteria. These are a list of pre-defined characteristics the literature must have, if they are to be included in a study. Different factors can be used as inclusion or exclusion criteria. 

The most common inclusion / exclusion criteria are: 

Geographic location

Limit the review of study to geographical area.

How far back do you wish to search for information? (For systematic reviews you need to give a reason if you choose to restrict your search by date).

Publication type

Common excluded publications are reviews and editorials.

Participants

Adults, child studies, certain age groups?

Limit the review of study to language.

Peer review

Has to be reviewed by accredited professionals in the field.

Study design

Randomised controlled trials, cohort studies?

Primary care, hospitals, general practice, schools?

Once you have a clear research question, you need to conduct a scoping search to identify:

• The search terms you should use to retrieve information on your topic.
• The body of the literature that has already been written on your topic.
• If a systematic review, covering the question you are considering, has already been published or has been registered and it is in the process of being completed. If that is the case, you need to modify your research question. If the systematic review was completed over five years ago, you can perform an update of the same question. 

Search the following resources to find systematic reviews, either completed or in progress. Check the Supporting videos and online tutorials page on this guide for demonstration of how to do a scoping search. 

Database of systematic review protocols and published systematic reviews. Accessibility statement for Prospero

A clinical search engine providing access to research evidence in the form of primary research articles, clinical trials, systematic reviews and evidence summaries. Grey literature is also available.

• The Cochrane Library The Cochrane Library is a collection of databases that contain different types of high-quality, independent evidence to inform healthcare decision-making. more... less... Advanced search.

To find primary research related to your topic you can search databases available via: 

Platform providing access to databases covering a variety of subjects including business, economics, education, environment, food science, health, politics and sociology. Accessibility statement for EBSCO

Provides access to a number of health databases covering general health topics as well as allied health; complementary medicine, health management, international health, maternity care, nursing and social policy. Accessibility statement for Ovid Online

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• Next: Step 2 - Develop a search strategy >>
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• PLoS Comput Biol
• v.9(7); 2013 Jul

Ten Simple Rules for Writing a Literature Review

Marco pautasso.

1 Centre for Functional and Evolutionary Ecology (CEFE), CNRS, Montpellier, France

2 Centre for Biodiversity Synthesis and Analysis (CESAB), FRB, Aix-en-Provence, France

Literature reviews are in great demand in most scientific fields. Their need stems from the ever-increasing output of scientific publications [1] . For example, compared to 1991, in 2008 three, eight, and forty times more papers were indexed in Web of Science on malaria, obesity, and biodiversity, respectively [2] . Given such mountains of papers, scientists cannot be expected to examine in detail every single new paper relevant to their interests [3] . Thus, it is both advantageous and necessary to rely on regular summaries of the recent literature. Although recognition for scientists mainly comes from primary research, timely literature reviews can lead to new synthetic insights and are often widely read [4] . For such summaries to be useful, however, they need to be compiled in a professional way [5] .

When starting from scratch, reviewing the literature can require a titanic amount of work. That is why researchers who have spent their career working on a certain research issue are in a perfect position to review that literature. Some graduate schools are now offering courses in reviewing the literature, given that most research students start their project by producing an overview of what has already been done on their research issue [6] . However, it is likely that most scientists have not thought in detail about how to approach and carry out a literature review.

Reviewing the literature requires the ability to juggle multiple tasks, from finding and evaluating relevant material to synthesising information from various sources, from critical thinking to paraphrasing, evaluating, and citation skills [7] . In this contribution, I share ten simple rules I learned working on about 25 literature reviews as a PhD and postdoctoral student. Ideas and insights also come from discussions with coauthors and colleagues, as well as feedback from reviewers and editors.

Rule 1: Define a Topic and Audience

How to choose which topic to review? There are so many issues in contemporary science that you could spend a lifetime of attending conferences and reading the literature just pondering what to review. On the one hand, if you take several years to choose, several other people may have had the same idea in the meantime. On the other hand, only a well-considered topic is likely to lead to a brilliant literature review [8] . The topic must at least be:

• interesting to you (ideally, you should have come across a series of recent papers related to your line of work that call for a critical summary),
• an important aspect of the field (so that many readers will be interested in the review and there will be enough material to write it), and
• a well-defined issue (otherwise you could potentially include thousands of publications, which would make the review unhelpful).

Ideas for potential reviews may come from papers providing lists of key research questions to be answered [9] , but also from serendipitous moments during desultory reading and discussions. In addition to choosing your topic, you should also select a target audience. In many cases, the topic (e.g., web services in computational biology) will automatically define an audience (e.g., computational biologists), but that same topic may also be of interest to neighbouring fields (e.g., computer science, biology, etc.).

Rule 2: Search and Re-search the Literature

After having chosen your topic and audience, start by checking the literature and downloading relevant papers. Five pieces of advice here:

• keep track of the search items you use (so that your search can be replicated [10] ),
• keep a list of papers whose pdfs you cannot access immediately (so as to retrieve them later with alternative strategies),
• use a paper management system (e.g., Mendeley, Papers, Qiqqa, Sente),
• define early in the process some criteria for exclusion of irrelevant papers (these criteria can then be described in the review to help define its scope), and
• do not just look for research papers in the area you wish to review, but also seek previous reviews.

The chances are high that someone will already have published a literature review ( Figure 1 ), if not exactly on the issue you are planning to tackle, at least on a related topic. If there are already a few or several reviews of the literature on your issue, my advice is not to give up, but to carry on with your own literature review,

The bottom-right situation (many literature reviews but few research papers) is not just a theoretical situation; it applies, for example, to the study of the impacts of climate change on plant diseases, where there appear to be more literature reviews than research studies [33] .

• discussing in your review the approaches, limitations, and conclusions of past reviews,
• trying to find a new angle that has not been covered adequately in the previous reviews, and
• incorporating new material that has inevitably accumulated since their appearance.

When searching the literature for pertinent papers and reviews, the usual rules apply:

• be thorough,
• use different keywords and database sources (e.g., DBLP, Google Scholar, ISI Proceedings, JSTOR Search, Medline, Scopus, Web of Science), and
• look at who has cited past relevant papers and book chapters.

Rule 3: Take Notes While Reading

If you read the papers first, and only afterwards start writing the review, you will need a very good memory to remember who wrote what, and what your impressions and associations were while reading each single paper. My advice is, while reading, to start writing down interesting pieces of information, insights about how to organize the review, and thoughts on what to write. This way, by the time you have read the literature you selected, you will already have a rough draft of the review.

Of course, this draft will still need much rewriting, restructuring, and rethinking to obtain a text with a coherent argument [11] , but you will have avoided the danger posed by staring at a blank document. Be careful when taking notes to use quotation marks if you are provisionally copying verbatim from the literature. It is advisable then to reformulate such quotes with your own words in the final draft. It is important to be careful in noting the references already at this stage, so as to avoid misattributions. Using referencing software from the very beginning of your endeavour will save you time.

Rule 4: Choose the Type of Review You Wish to Write

After having taken notes while reading the literature, you will have a rough idea of the amount of material available for the review. This is probably a good time to decide whether to go for a mini- or a full review. Some journals are now favouring the publication of rather short reviews focusing on the last few years, with a limit on the number of words and citations. A mini-review is not necessarily a minor review: it may well attract more attention from busy readers, although it will inevitably simplify some issues and leave out some relevant material due to space limitations. A full review will have the advantage of more freedom to cover in detail the complexities of a particular scientific development, but may then be left in the pile of the very important papers “to be read” by readers with little time to spare for major monographs.

There is probably a continuum between mini- and full reviews. The same point applies to the dichotomy of descriptive vs. integrative reviews. While descriptive reviews focus on the methodology, findings, and interpretation of each reviewed study, integrative reviews attempt to find common ideas and concepts from the reviewed material [12] . A similar distinction exists between narrative and systematic reviews: while narrative reviews are qualitative, systematic reviews attempt to test a hypothesis based on the published evidence, which is gathered using a predefined protocol to reduce bias [13] , [14] . When systematic reviews analyse quantitative results in a quantitative way, they become meta-analyses. The choice between different review types will have to be made on a case-by-case basis, depending not just on the nature of the material found and the preferences of the target journal(s), but also on the time available to write the review and the number of coauthors [15] .

Rule 5: Keep the Review Focused, but Make It of Broad Interest

Whether your plan is to write a mini- or a full review, it is good advice to keep it focused 16 , 17 . Including material just for the sake of it can easily lead to reviews that are trying to do too many things at once. The need to keep a review focused can be problematic for interdisciplinary reviews, where the aim is to bridge the gap between fields [18] . If you are writing a review on, for example, how epidemiological approaches are used in modelling the spread of ideas, you may be inclined to include material from both parent fields, epidemiology and the study of cultural diffusion. This may be necessary to some extent, but in this case a focused review would only deal in detail with those studies at the interface between epidemiology and the spread of ideas.

While focus is an important feature of a successful review, this requirement has to be balanced with the need to make the review relevant to a broad audience. This square may be circled by discussing the wider implications of the reviewed topic for other disciplines.

Rule 6: Be Critical and Consistent

Reviewing the literature is not stamp collecting. A good review does not just summarize the literature, but discusses it critically, identifies methodological problems, and points out research gaps [19] . After having read a review of the literature, a reader should have a rough idea of:

• the major achievements in the reviewed field,
• the main areas of debate, and
• the outstanding research questions.

It is challenging to achieve a successful review on all these fronts. A solution can be to involve a set of complementary coauthors: some people are excellent at mapping what has been achieved, some others are very good at identifying dark clouds on the horizon, and some have instead a knack at predicting where solutions are going to come from. If your journal club has exactly this sort of team, then you should definitely write a review of the literature! In addition to critical thinking, a literature review needs consistency, for example in the choice of passive vs. active voice and present vs. past tense.

Rule 7: Find a Logical Structure

Like a well-baked cake, a good review has a number of telling features: it is worth the reader's time, timely, systematic, well written, focused, and critical. It also needs a good structure. With reviews, the usual subdivision of research papers into introduction, methods, results, and discussion does not work or is rarely used. However, a general introduction of the context and, toward the end, a recapitulation of the main points covered and take-home messages make sense also in the case of reviews. For systematic reviews, there is a trend towards including information about how the literature was searched (database, keywords, time limits) [20] .

How can you organize the flow of the main body of the review so that the reader will be drawn into and guided through it? It is generally helpful to draw a conceptual scheme of the review, e.g., with mind-mapping techniques. Such diagrams can help recognize a logical way to order and link the various sections of a review [21] . This is the case not just at the writing stage, but also for readers if the diagram is included in the review as a figure. A careful selection of diagrams and figures relevant to the reviewed topic can be very helpful to structure the text too [22] .

Rule 8: Make Use of Feedback

Reviews of the literature are normally peer-reviewed in the same way as research papers, and rightly so [23] . As a rule, incorporating feedback from reviewers greatly helps improve a review draft. Having read the review with a fresh mind, reviewers may spot inaccuracies, inconsistencies, and ambiguities that had not been noticed by the writers due to rereading the typescript too many times. It is however advisable to reread the draft one more time before submission, as a last-minute correction of typos, leaps, and muddled sentences may enable the reviewers to focus on providing advice on the content rather than the form.

Feedback is vital to writing a good review, and should be sought from a variety of colleagues, so as to obtain a diversity of views on the draft. This may lead in some cases to conflicting views on the merits of the paper, and on how to improve it, but such a situation is better than the absence of feedback. A diversity of feedback perspectives on a literature review can help identify where the consensus view stands in the landscape of the current scientific understanding of an issue [24] .

Rule 9: Include Your Own Relevant Research, but Be Objective

In many cases, reviewers of the literature will have published studies relevant to the review they are writing. This could create a conflict of interest: how can reviewers report objectively on their own work [25] ? Some scientists may be overly enthusiastic about what they have published, and thus risk giving too much importance to their own findings in the review. However, bias could also occur in the other direction: some scientists may be unduly dismissive of their own achievements, so that they will tend to downplay their contribution (if any) to a field when reviewing it.

In general, a review of the literature should neither be a public relations brochure nor an exercise in competitive self-denial. If a reviewer is up to the job of producing a well-organized and methodical review, which flows well and provides a service to the readership, then it should be possible to be objective in reviewing one's own relevant findings. In reviews written by multiple authors, this may be achieved by assigning the review of the results of a coauthor to different coauthors.

Rule 10: Be Up-to-Date, but Do Not Forget Older Studies

Given the progressive acceleration in the publication of scientific papers, today's reviews of the literature need awareness not just of the overall direction and achievements of a field of inquiry, but also of the latest studies, so as not to become out-of-date before they have been published. Ideally, a literature review should not identify as a major research gap an issue that has just been addressed in a series of papers in press (the same applies, of course, to older, overlooked studies (“sleeping beauties” [26] )). This implies that literature reviewers would do well to keep an eye on electronic lists of papers in press, given that it can take months before these appear in scientific databases. Some reviews declare that they have scanned the literature up to a certain point in time, but given that peer review can be a rather lengthy process, a full search for newly appeared literature at the revision stage may be worthwhile. Assessing the contribution of papers that have just appeared is particularly challenging, because there is little perspective with which to gauge their significance and impact on further research and society.

Inevitably, new papers on the reviewed topic (including independently written literature reviews) will appear from all quarters after the review has been published, so that there may soon be the need for an updated review. But this is the nature of science [27] – [32] . I wish everybody good luck with writing a review of the literature.

Acknowledgments

Many thanks to M. Barbosa, K. Dehnen-Schmutz, T. Döring, D. Fontaneto, M. Garbelotto, O. Holdenrieder, M. Jeger, D. Lonsdale, A. MacLeod, P. Mills, M. Moslonka-Lefebvre, G. Stancanelli, P. Weisberg, and X. Xu for insights and discussions, and to P. Bourne, T. Matoni, and D. Smith for helpful comments on a previous draft.

Funding Statement

This work was funded by the French Foundation for Research on Biodiversity (FRB) through its Centre for Synthesis and Analysis of Biodiversity data (CESAB), as part of the NETSEED research project. The funders had no role in the preparation of the manuscript.

• Subject guides
• Researching for your literature review
• Before you start

Researching for your literature review: Before you start

• Literature reviews
• Literature sources
• Develop a search strategy
• Keyword search activity
• Subject search activity
• Combined keyword and subject searching
• Online tutorials
• Apply search limits
• Run a search in different databases
• Supplementary searching
• Save your searches
• Manage results

The research question

If you are having difficulty finding a suitable topic for your review, try thinking about the following:

• Areas of uncertainty
• Variations of practice 
• Assumptions in practice
• Existing review topics that may be outdated and could be revised to address a new element

Once you have your topic, put it into the format of a question or questions to be answered by the literature . 

Essentially a research question puts forward an hypothesis about a relationship, such as the relationship between an intervention and an outcome. For example: In P (population group) does I (intervention) result in O (outcome)? or Will I perform better than C at achieving O in population P?

For an overview of five main steps to creating a good research question see the online library resources . See also this online video on YouTube.

If you would like to try generative AI (ChatGPT) to assist with developing your research question, see this video by an academic language advisor in the faculty of education for some advice.

T he research question will guide the development of your search strategy so it's important that you take time to do some testing of your proposed question. Having done the preliminary scoping searches as noted above will be helpful in understanding the volume of the literature. This guide will provide a sample search for a health/medical topic, as well as for an education/social science topic. Choose which section you would like to work through.

Start with scoping searches

Doing some scoping searches are an essential step to help you understand the quantity of existing literature in your area of interest, and the terminology used in its discussion. This preliminary searching is non-systematic in its nature and is not documented, but helps establish a basis for the subsequent development of a comprehensive search strategy.

Scoping searches usually involve a series of very targeted searches , perhaps looking for your main keywords in the article title. You might also look for examples of review articles on similar topics, as these might be useful for gaining an overview of a facet of your own topic. We can use a search engine such as Google Scholar , large inter-disciplinary databases such as Scopus or Proquest central , or a discipline-specific database that you are familiar with.

Our scoping searches will help us to understand whether our research question has the following elements:

• the question addresses a gap in the literature ( has not recently been answered in another review)
• the question is specific and focused (and therefore feasible)
• the question is answerable in the literature.

Develop a 'gold set' of target papers

Your scoping searches should enable you to locate a 'gold set' of relevant articles that you would expect to use in your review.

This gold set is a curated collection of highly relevant papers for your research question. These articles are important as a reliable foundation for compiling your search terms.

The gold set is also needed to test the strength of the search strategy that you will later develop. This testing is a hallmark of a rigorous and comprehensive search. Unless you test your search on a target set of papers that are definitely relevant, you have no tangible means of assessing whether you have any errors or omissions in your search strategy!

• << Previous: Literature sources
• Next: Search strategies - Health/Medical topic example >>

Conduct a literature review

What is a literature review.

A literature review is a summary of the published work in a field of study. This can be a section of a larger paper or article, or can be the focus of an entire paper. Literature reviews show that you have examined the breadth of knowledge and can justify your thesis or research questions. They are also valuable tools for other researchers who need to find a summary of that field of knowledge.

Unlike an annotated bibliography, which is a list of sources with short descriptions, a literature review synthesizes sources into a summary that has a thesis or statement of purpose—stated or implied—at its core.

How do I write a literature review?

Step 1: define your research scope.

• What is the specific research question that your literature review helps to define?
• Are there a maximum or minimum number of sources that your review should include?

Ask us if you have questions about refining your topic, search methods, writing tips, or citation management.

Step 2: Identify the literature

Start by searching broadly. Literature for your review will typically be acquired through scholarly books, journal articles, and/or dissertations. Develop an understanding of what is out there, what terms are accurate and helpful, etc., and keep track of all of it with citation management tools . If you need help figuring out key terms and where to search, ask us .

Use citation searching to track how scholars interact with, and build upon, previous research:

• Mine the references cited section of each relevant source for additional key sources
• Use Google Scholar or Scopus to find other sources that have cited a particular work

Step 3: Critically analyze the literature

Key to your literature review is a critical analysis of the literature collected around your topic. The analysis will explore relationships, major themes, and any critical gaps in the research expressed in the work. Read and summarize each source with an eye toward analyzing authority, currency, coverage, methodology, and relationship to other works. The University of Toronto's Writing Center provides a comprehensive list of questions you can use to analyze your sources.

Step 4: Categorize your resources

Divide the available resources that pertain to your research into categories reflecting their roles in addressing your research question. Possible ways to categorize resources include organization by:

• methodology
• theoretical/philosophical approach

Regardless of the division, each category should be accompanied by thorough discussions and explanations of strengths and weaknesses, value to the overall survey, and comparisons with similar sources. You may have enough resources when:

• You've used multiple databases and other resources (web portals, repositories, etc.) to get a variety of perspectives on the research topic.
• The same citations are showing up in a variety of databases.

Additional resources

Undergraduate student resources.

• Literature Review Handout (University of North Carolina at Chapel Hill)
• Learn how to write a review of literature (University of Wisconsin-Madison)

Graduate student and faculty resources

• Information Research Strategies (University of Arizona)
• Literature Reviews: An Overview for Graduate Students (NC State University)
• Oliver, P. (2012). Succeeding with Your Literature Review: A Handbook for Students [ebook]
• Machi, L. A. & McEvoy, B. T. (2016). The Literature Review: Six Steps to Success [ebook]
• Graustein, J. S. (2012). How to Write an Exceptional Thesis or Dissertation: A Step-by-Step Guide from Proposal to Successful Defense [ebook]
• Thomas, R. M. & Brubaker, D. L. (2008). Theses and Dissertations: A Guide to Planning, Research, and Writing

Systematic reviews: Formulate your question

• Introduction
• Formulate your question
• Write a protocol
• Search the literature
• Manage references
• Select studies
• Assess the evidence
• Write your review
• Further resources

Defining the question

Defining the research question and developing a protocol are the essential first steps in your systematic review.  The success of your systematic review depends on a clear and focused question, so take the time to get it right.

• A framework may help you to identify the key concepts in your research question and to organise your search terms in one of the Library's databases.
• Several frameworks or models exist to help researchers structure a research question and three of these are outlined on this page: PICO, SPICE and SPIDER.
• It is advisable to conduct some scoping searches in a database to look for any reviews on your research topic and establish whether your topic is an original one .
• Y ou will need to identify the relevant database(s) to search and your choice will depend on your topic and the research question you need to answer.
• By scanning the titles, abstracts and references retrieved in a scoping search, you will reveal the terms used by authors to describe the concepts in your research question, including the synonyms or abbreviations that you may wish to add to a database search.
• The Library can help you to search for existing reviews: make an appointment with your Subject Librarian to learn more.

The PICO framework

PICO may be the most well-known model framework: it has its origins in epidemiology and now is widely-used for evidence-based practice and systematic reviews.

PICO normally stands for Population (or Patient or Problem)  - Intervention - Comparator - Outcome.

The SPICE framework

SPICE is used mostly in social science and healthcare research.  It stands for Setting - Population (or Perspective) - Intervention - Comparator - Evaluation.  It is similar to PICO and was devised by Booth (2004).  

The examples in the SPICE table are based on the following research question:  Can mortality rates for older people be reduced if a greater proportion are examined initially by allied health staff in A&E? Source: Booth, A (2004) Formulating answerable questions. In Booth, A & Brice, A (Eds) Evidence Based Practice for Information Professionals: A handbook. (pp. 61-70) London: Facet Publishing.

The SPIDER framework

SPIDER was  adapted from the  PIC O framework  in order to include searches for qualitative and mixed-methods research.  SPIDER was developed by Cooke, Smith and Booth (2012).

Source : Cooke, A., Smith, D. & Booth, A. (2012). Beyond PICO: the SPIDER tool for qualitative evidence synthesis.  Qualitative Health Research (10), 1435-1443. http://doi.org/10.1177/1049732312452938 .

More advice about formulating a research question

Module 1  in Cochrane Interactive Learning  explains the importance of the research question, some types of review question and the PICO  framework.  The Library is subscribing to  Cochrane Interactive Learning . 

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• Next: Write a protocol >>
• Last Updated: Jul 12, 2024 12:29 PM
• URL: https://library.bath.ac.uk/systematic-reviews

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Literature Reviews

Define your research question.

• What is a literature review?
• Steps in the Literature Review Process
• Determine inclusion and exclusion criteria
• Choose databases and search
• Review Results
• Synthesize Results
• Analyze Results
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Defining your research question is the key to beginning, so while you may be clear on the area you want to study, chances are there are some nuances that you need to think through. 

Part of this process may require exploratory searching in databases so that you can see what's already been published on your topic. Even if it's a new area, it's likely something has already been published in at least an adjacent area of study. 

Some things to consider:

• What is my central question or issue that the literature can help define?
• What is already known about the topic?
• Is the scope of the literature being reviewed wide or narrow enough?
• Is there a conflict or debate in the literature?
• What connections can be made between the texts being reviewed?
• What sort of literature should be reviewed? Historical? Theoretical? Methodological? Quantitative? Qualitative?
• What criteria should be used to evaluate the literature being reviewed?
• How will reviewing the literature justify the topic I plan to investigate?

Source:  https://libguides.library.kent.edu/c.php?g=389868&p=2645658

For more on the research question:  https://writingcenter.gmu.edu/guides/how-to-write-a-research-question

Video on Defining the Research Question

When you pick your topic, it's not set in stone. Picking and adjusting your topic is an integral part of the research process! This video is published under a Creative Commons 3.0 BY-NC-SA US license. (3 minutes)

• Last Updated: Aug 13, 2024 1:52 PM
• URL: https://guides.lib.utexas.edu/literaturereviews

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Literature Review: Research Questions

• Introduction
• Types of Literature Reviews
• Research Questions
• Search the Literature
• Manage and Evaluate References
• Nursing Literature Review Search Tips

Look up Discipline Examples

Literature reviews differ throughout the academic disciplines. Look at published journal articles to become familiar with how literature reviews are presented in your discipline.

• Sample literature reviews for Communication Arts
• Sample literature reviews for Nursing 1 and 2

Also look for literature reviews in our  databases  by using the search term "literature review."

Define Your Research Question

Research questions are the beginning to all of your research processes. A research question provides focus to your searches and guides you in selecting the correct sources for your literature review. Either way, research questions:

• Must be clear and concise in order to be effective.
• Must be complex enough to require research and analysis
• Must consider key themes and elements of the assigned topic.
• Must be of interest to you - you want to learn more about the topic, not dread doing your research!

Choose a topic that is neither too broad nor too narrow so that you find too much or too little research on your topic.

• Narrow down your research question by exploring the topic online or in books and then think about what issues you want to research in your literature review. 

Narrowing down topics like this is essential to creating an effective and complex research question:

• << Previous: Types of Literature Reviews
• Next: Search the Literature >>
• Last Updated: Sep 12, 2023 10:51 AM
• URL: https://library.madonna.edu/literaturereview

University of Tasmania, Australia

Literature reviews.

• What is a literature review?
• What is a 'researchable' question?

Preliminary research

Generating ideas, refining your question, question frameworks.

• How to find the literature
• How to manage the reading and take notes that make sense
• How to bring it all together: examples, templates, links, guides

Questions vs Thesis statements

Questions and thesis statements both have the same purpose, which is to state what you are writing about and restrict your paper to a manageable topic.

• A question is phrased as a problem to solve
• A thesis statement is phrased as a  tentative answer , but both sides of the question must still be considered in your research

Badke, WB 2014,  Research strategies : finding your way through the information fog,  iUniverse, Bloomington IN.

Question - Does eating chocolate improve cognitive function?

Thesis statement - Eating chocolate may improve cognitive function.

You may find it helps to think in terms of answering a question at the beginning of your research to avoid unintentionally biasing yourself toward one answer.

Good research questions don't usually appear out of thin air.  You need to do some preliminary reading to understand the range of questions and answers relating to a topic before you can identify possible areas to focus on. 

You also need to consider the scope of your project, and make sure it is realistic given your timeframe and word count.

• Is there enough research to review? If there is not enough written on your topic to review, you will need to widen your scope, or change your question.  
• Is there too much? If there is too much literature on your topic to review, you will have to focus more tightly on one aspect.

These decisions cannot be made before you start.  Only reading about the issues that are being discussed in the existing academic literature will give you enough background knowledge to choose an achievable focus for your review.

Review articles

One way to get an overview of the body of research on your topic is to look for published review articles.

What's the difference between a primary research article and a review article?

• A primary research article is a description of a single study, investigation or experiment.
• A review article is a summary and analysis of several other studies, investigations, and experiments.

Review articles summarise the current state of understanding on a topic.

They can help you find:

• the main people working in an area of research
• recent advances and discoveries
• important primary research papers in the field
• significant gaps in the research
• current debates
• suggestions about where research might go next

IMPORTANT: please resist the temptation to use a published review article as a direct template for your own review, because this makes it very easy to unintentionally plagiarise!

Creating a mind map of topics from your preliminary reading can be a great way to generate ideas for possible research questions.  Mind mapping will allow you to:

• See an overview of your topic
• Identify connections between ideas and details
• Group emerging themes together (colour coding works well for this)

If you prefer to create a digital mind map, there are loads of software options to choose form (try Coggle , Xmind ,  Freeplane ,  MindMeister , Ayoa , or MindNode ), but I strongly urge you to consider using the traditional pen and paper method. 

Why go old-school?

Drawing your mind map by hand gives you complete freedom to concentrate on your ideas (and the relationships between them) without being distracted by trying to make software do what you want it to.

Your hand drawn mind map may not look pretty, but remember that this is a thinking tool .  It isn't supposed to be a work of art.

• Mind Mapping Worksheet (.docx)
• Mind Mapping Worksheet (.pdf)

When you have done some preliminary reading and brainstorming, you will probably find that you have several ideas that could be turned into focused research questions.  One way to do this is the tried-and-true 5W+H method:

• Refining Your Research Question Worksheet (.docx)
• Refining Your Research Question Worksheet (.pdf)

There are also several frameworks that have been developed to help researchers structure effective questions and clarify main concepts.  They are often used in Evidence Based Practice methodology for the health sciences, but some can also be useful in other disciplines.

Even when your question does not fit perfectly into any one framework, using part of one to clarify your thinking can help tremendously.

Here are some of the most common frameworks:

• PICO and variations

Useful for: clinical research

Richardson, WS, Wilson, MC, Nishikawa, J, & Hayward, RS 1995, 'The well-built clinical question: A key to evidence-based decisions',  ACP journal club, vol. 123, no. 3, pp. A12-A12.

Further resources for using PICO

Developing Your Search Question using PICO/PIO/PEO (Teeside University)

Seven steps to the perfect PICO search (EBSCO - CINAHL Complete)

Clinical examples using PICO (CIAP - Clinical Information Access Portal)

Useful for: qualitative research

Khan, KS, Kunz, R, Kleijnen, J, & Antes, G 2003,  Systematic reviews to support evidence-based medicine: How to review and apply findings of healthcare research , London: Royal Society of Medicine Press.

Useful for: qualitative / mixed methods research focused on samples

Cooke, A, Smith, D, & Booth, A 2012, 'Beyond PICO: The SPIDER tool for qualitative evidence synthesis',  Qualitative Health Research, vol. 22 no. 10, pp. 1435-1443.

Useful for: qualitative research examining a policy or service

xpectation	What are you want to improve or change? What is the information going to be used for?
lient group	Who is the service for?
ocation	Where is the service run from?
mpact	What change in service are you investigating? Wildridge, V, & Bell, L 2002, 'How CLIP became ECLIPSE: A mnemonic to assist in searching for health policy/management information',  Health Information & Libraries Journal , vol. 19, no. 2, pp. 113–115. More frameworks A review of 38 question frameworks Supplementary material from: Booth, A., Noyes, J., Flemming, K., Moore, G., Tunçalp, Ö., & Shakibazadeh, E. (2019). Formulating questions to explore complex interventions within qualitative evidence synthesis. BMJ global health, 4(Suppl 1), e001107. https://doi.org/10.1136/bmjgh-2018-001107 << Previous: What is a literature review? Next: How to find the literature >> Last Updated: Jun 28, 2024 8:42 AM URL: https://utas.libguides.com/literaturereviews Literature Reviews Getting Started Steps for Conducting a Lit Review Finding "The Literature" Organizing/Writing Peer Review Citation/Style Guides This link opens in a new window Quick Links What is a literature review. A literature review is a methodical examination of the published literature on a specific topic or research question, aimed at analyzing rather than merely summarizing scholarly works relevant to your research . It includes literature that offers background on your topic and demonstrates how it aligns with your research question. What is the Purpose of a Literature Review? To help define the focus of your research topic. To identify existing research in your area of interest, pinpoint gaps in the existing literature, and avoid duplicating previous research. To gain an understanding of past and current research as well as the current developments and controversies in your field of interest. To recognize and assess the strengths and weaknesses of works related to your area of interest. To evaluate the contributions of experts, theoretical approaches, methodologies, results, conclusions, and possible opportunities for future research. A Literature Review is NOT An annotated bibliography or research paper A collection of broad, unrelated sources Everything that has been written on a particular topic Literature criticism or a book review. Literature Review vs Annotated Bibliography A literature review and an annotated bibliography are both tools used to assess and present scholarly research, but they serve different purposes and have distinct formats:   Literature Review Annotated Bibliography Purpose Provides an examination of a collection of scholarly work as they pertain to a specific topic of interest. Provides a summary of the contents of each example in a collection of scholarly works. Elements Includes an introduction, body, conclusion, and bibliography similar to a research paper. A selection of research and/or scholarly works each with its own summary. Construction Sources are logically organized and synthesized to demonstrate the author's understanding of the material. An alphabetized list of works with a complete citation and a brief statement of the main components. Critical Evaluation Contains a collective critique of a body of work related to a specific topic. Assesses the strengths, weaknesses, gaps, and possible future research needs for that topic. Any critique it contains will focus on the quality of the research and/or argument found in each scholarly work. Where Can I Find a Lit Review? The Literature Review portion of a scholarly article is usually close to the beginning. It often follows the introduction , or may be combined with the introduction. The writer may discuss his or her research question first, or may choose to explain it while surveying previous literature. If you are lucky, there will be a section heading that includes " literature review ".  If not, look for the section of the article with the most citations or footnotes . Next: Steps for Conducting a Lit Review >> Last Updated: Aug 14, 2024 5:23 PM URL: https://westlibrary.txwes.edu/literaturereview SJSU Events Calendar Monday, September 23 Foundations of Graduate Writing Series / Workshops 1 & 2 Monday, September 23, 2024 1 pm to 4 pm Share Foundations of Graduate Writing Series / Workshops 1 & 2 on Facebook Share Foundations of Graduate Writing Series / Workshops 1 & 2 on Twitter Share Foundations of Graduate Writing Series / Workshops 1 & 2 on LinkedIn About this Event Graduate writing is different from undergraduate writing, and writing is a communication skill that you need to master regardless of your major. Do you know all the parts of a graduate research paper? How to write an abstract or literature review? How to find articles based on your research question? How to seamlessly integrate sources into your writing?  The Writing Center is here to help! We have partnered with the College of Graduate Studies to help you gain the resources and skills you need to improve your writing skills as you enter into advanced study of your field/discipline.  The Foundations of Graduate Writing series includes seven carefully selected workshops to help you increase your confidence and comfort with writing at the graduate level. Learn more about the seven workshop topics . All sessions are conducted online via Zoom.  ----------------------------------------------------- Foundations of Graduate Writing Series FULL Schedule Monday, September 23rd, 1:00 PM - 4:00 PM (PT) - Graduate Writer Mindset (Workshop 1), 1:00 - 2:15 - Break, 2:15 - 2:30 - Academic Voice (Workshop 2), 2:30 - 3:45 - Discussion, Q&A, Evaluations, 3:45 - 4:00 Monday, September 30th, 1:00 PM - 4:00 PM (PT) - Recognizing the Parts of a Research Paper (Workshop 3), 1:00 - 2:15 - How to Find Good Articles (Workshop 4 with Librarian Bernd Becker), 2:30 - 3:45 Monday, October 7th, 1:00 PM - 4:00 PM (PT) - Abstracts and Literature Reviews (Workshop 5), 1:00 - 2:15 - Sentence Variety and Rhythm (Workshop 6), 2:30 - 3:45 Monday, October 14th, 1:00 PM - 2:30 PM (PT) - Writing Group Creation Training (Workshop 7), 1:00 - 2:15 - Discussion, Q&A, Evaluations, 2:15 - 2:30 Zoom registration is required to attend. Spots fill quickly, so sign up soon! Though attendees will receive the most benefit from attending all the workshop sessions as a cohesive whole, you are welcome to register for whichever dates you can attend.   Register: https://sjsu.zoom.us/meeting/register/tZAqcumhqjkuHdCc2HZEWNkfx54Q5htBEw1t     Questions? Contact the Writing Center Director, Michelle Hager ( [email protected] ).  Event Details Target Audience Phone Number 408-924-2308 Writing Center See Who Is Interested 0 people are interested in this event Powered by the Localist Community Events Calendar © Enter your email address and password to get started: Information Author Services Initiatives You are accessing a machine-readable page. In order to be human-readable, please install an RSS reader. All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess . Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications. Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receive positive feedback from the reviewers. Editor’s Choice articles are based on recommendations by the scientific editors of MDPI journals from around the world. Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal. Original Submission Date Received: . Active Journals Find a Journal Proceedings Series For Authors For Reviewers For Editors For Librarians For Publishers For Societies For Conference Organizers Open Access Policy Institutional Open Access Program Special Issues Guidelines Editorial Process Research and Publication Ethics Article Processing Charges Testimonials Preprints.org SciProfiles Encyclopedia Article Menu Subscribe SciFeed Recommended Articles Google Scholar on Google Scholar Table of Contents Find support for a specific problem in the support section of our website. Please let us know what you think of our products and services. Visit our dedicated information section to learn more about MDPI. JSmol Viewer Strengthening akis for sustainable agricultural features: insights and innovations from the european unio: a literature review. 1. Introduction 2. materials and methods, 2.1. data collection procedure, 2.2. identification criteria, 2.3. screening and selection criteria, 2.4. eligibility and inclusion criteria. The studies that were carried out or considered the 28 countries in the European Union (including the United Kingdom until 2019 and excluding Romania). Studies published in the English Language. Studies that were published within the past 11 years (the review covers the period from 2014 to 2024, a period in which the two previous Programming Periods of the Common Agricultural Policy were implemented). Studies covering the inclusion of a transparent description of the process of data acquisition and interpretation. Studies covering a primary or secondary class investigation on the subject matter. Studies showcasing the effects of AKISs and FASs on agricultural knowledge advancement. Studies published in a non-English language. Studies carried out outside the EU. Studies with unclear methodology of data collection and analysis. Studies lacking author names and affiliation. Studies not covering both the main issues of this review (i.e., AKIS and FAS). 4. Discussion 4.1. akis and fas in the foreground through the new cap, 4.2. improving the effectiveness of an akis, 5. conclusions, author contributions, institutional review board statement, data availability statement, conflicts of interest. Kuiper, D.; Roling, N.G. Proceedings of the European Seminar on Knowledge Management and Information Technology ; Wageningen Agricultural University: Wageningen, The Netherlands, 1991; pp. 8–20. [ Google Scholar ] Hermans, F.; Geerling-Eiff, F.; Potters, J.; Klerkx, L. 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[ Google Scholar ] [ CrossRef ] Click here to enlarge figure Article ID Country Factor(s) Investigated Key Results Obtained Suggested Improvements [ ] Kiraly et al. (2023). European Union countries Assessing the behavior of European farmers, foresters and advisors regarding the frequency of searching for information on digital transformation using the EU Farmbook application. [ ] Ingram and Mills (2019). European countries Advisory services regarding sustainable soil management. [ ] Laurent et al. (2021). Southwestern France Evaluation of the processes by which farmers combine different sources of agricultural advice (micro-AKIS) for three types of innovation. [ ] Madureira et al. (2022). Europe The role of farm consultancy in agricultural innovation in relation to the microAKIS. [ ] Amerani et Michailidis (2023). Greece Evaluation of the contribution of the Greek AKIS and its adaptation to modern requirements of Greek agriculture [ ] Kiljunen et Jaakkola (2020). Finland AKIS and the Farm Advisory System in Finland. [ ] Charatsari et al. (2023). Greece, Italy Investigation of the possibility of AKIS actors to develop dynamic capacities during the supply process of the food chain. [ ] Masi et al. (2022). Italy Evaluation of precision agriculture tools as an innovation and the variables that facilitate or hinder their implementation in agricultural practice. [ ] Nordlund and Norrby (2021). Sweden Detailed description of the Swedish agricultural advisory services. [ ] Sturel (2021). France French AKIS and Farm Advisory System combined with the promotion of interactive innovation to support the transition in agriculture and forestry. [ ] Enfedaque Diaz et al. (2020). Spain AKIS and Advisory Services in Spain. [ ] Almeida et Viveiros (2020). Portugal Report of the AKIS in Portugal, with an emphasis on agricultural advisory services. [ ] Birke et al. (2021). Germany Overview of the AKIS and the Forestry Knowledge and Innovation System (FKIS) in Germany. [ ] Jelakovic (2021). Croatia Overview of the Croatian AKIS. [ ] Stankovic (2020). Serbia Report of the Serbian AKIS and FAS. [ ] Hrovatic (2020). Slovenia Description of the Slovenian AKIS and FAS. [ ] Bachev (2022). Bulgaria Analyzing Governance, Efficiency and Development of the AKIS. [ ] Koutsouris et al. (2020). Cyprus Comprehensive overview of the Cyprus AKIS and the Agricultural Advisory System. [ ] Knierim et al. (2019). Germany Smart Farming Technologies (SFT) and their degree of perception by farmers. [ ] Koutsouris et al. (2020) Greece AKIS and agricultural advisory services in Greece. [ ] Coquil et al. (2018). France The transformations of farmers and AKIS actors’ work during agroecological transitions. [ ] Lybaert et Debruyne (2020). Belgium Overview of the Belgian AKIS, focusing on agricultural advisory services. [ ] Dortmans et al. (2020). Netherlands Insight into the Dutch AKIS actors and factors that play a role in the system. [ ] Gaborne et al. (2020). Hungary The general characteristics of the Hungarian agricultural and forestry sector and AKIS, as well as the historical development of the advisory system. [ ] Oliveira et al. (2019). Portugal The Portuguese irrigation system of the Lis Valley, within the framework of the EIP AGRI Program of the European Union. [ ] Mirra et al. (2020). Campania region, Italy Analysis of the implementation of an experimental AKIS model through the RDP. [ ] Cristiano et al. (2020). Italy An overview of the Italian AKIS and the local Farm Advisory Services (FASs). [ ] Todorova (2021). Bulgaria A comprehensive description of the Bulgarian AKIS and FAS. [ ] Dzelme et Zurins (2021). Latvia A description of the AKIS in Latvia and brief outlook of the Forestry AKIS (FKIS). [ ] Matuseviciute et al. (2021). Lithuania AKIS and FAS in Lithuania. A detailed report. [ ] Zimmer et al. (2020). Luxembourg Description of the AKIS in Luxembourg. [ ] Giagnocavo et al. (2022). Spain The reconnection of the farm production system with nature, especially where the production procedure is embedded in less sustainable conventional or dominant regimes and landscapes. [ ] Klitgaard (2019). Denmark A comprehensive description of the AKIS and FAS in Denmark. [ ] Cristiano et al. (2020). Malta Description of the AKIS with a focus in the FAS in the Republic of Malta. [ ] Knierim et al. (2015) Belgium, France, Ireland, Germany, Portugal and the UK The AKIS concept in selected EU member states. [ ] Terziev and Arabska (2015). Bulgaria Quality assurance and sustainable development in the agri-food sector. [ ] Konecna (2020). Czech Republic A comprehensive description of theAKIS in the Czech Republic, with a particular focus on farm and forestry advisory services. [ ] Kasdorferova et al. (2020). Slovak Republic Description of the AKIS and FAS in Slovak Republic. [ ] Boczek et al. (2020). Poland An overview of the AKIS and FKIS, as well as the FAS in Poland. [ ] Ingram et al. (2022). Europe countries Evaluation of the advisory services of European countries in the context of sustainable soil management. [ ] Herzog et Neubauer (2020). Austria Evaluation of the Austrian AKIS. [ ] Banninger (2021). Switzerland Description of the Swiss AKIS and advisory services. [ ] Maher (2020). Republic of Ireland Description of the Irish AKIS, with an emphasis on methods of knowledge dissemination and innovation. [ ] Dunne et al. (2019). Laois county, Republic of Ireland Evaluating the interaction characteristics of public and private Farm Advisory Services in County Laois, Ireland. [ ] Knuth and Knierim (2014). Germany Scientific bodies and providers of agricultural advisory services: finding ways to strengthen their relationship. [ ] Konecna (2018). Czach Republic Evaluation of the Institute of Agricultural Economy and Information (IAEI) regarding its innovation potential. [ ] Hermans et al. (2019). England, France, Germany, Hungary, Italy, Latvia, the Netherlands, Switzerland Effect of AKIS structural factors of eight European countries on cooperative schemes or social learning in innovation networks. [ ] Klerkx et al. (2017). Norway Challenges for advisory services in serving various types of farmers seeking and acquiring farm business advice. [ ] Tamsalu (2021). Estonia Presentation of the AKIS in Estonia. [ ] Kania and Zmija (2016). Poland How cooperation between AKIS stakeholders is assessed from the standpoint of the 16 provincial Agricultural Advisory Centers (ODRs). The statements, opinions and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s). MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions or products referred to in the content. Share and Cite Kountios, G.; Kanakaris, S.; Moulogianni, C.; Bournaris, T. Strengthening AKIS for Sustainable Agricultural Features: Insights and Innovations from the European Unio: A Literature Review. Sustainability 2024 , 16 , 7068. https://doi.org/10.3390/su16167068 Kountios G, Kanakaris S, Moulogianni C, Bournaris T. Strengthening AKIS for Sustainable Agricultural Features: Insights and Innovations from the European Unio: A Literature Review. Sustainability . 2024; 16(16):7068. https://doi.org/10.3390/su16167068 Kountios, Georgios, Spyridon Kanakaris, Christina Moulogianni, and Thomas Bournaris. 2024. "Strengthening AKIS for Sustainable Agricultural Features: Insights and Innovations from the European Unio: A Literature Review" Sustainability 16, no. 16: 7068. https://doi.org/10.3390/su16167068 Article Metrics Article access statistics, further information, mdpi initiatives, follow mdpi. Subscribe to receive issue release notifications and newsletters from MDPI journals 280 COMMENTS How to Write a Literature Review A literature review is a survey of scholarly knowledge on a topic. Our guide with examples, video, and templates can help you write yours. 1. Identify the Question How to Write a Literature Review A self-guided tutorial that walks you through the process of conducting a Literature Review. Conducting a Literature Review: Research Question Interactive learning module that guides you through the process of identifying, evaluating, and using scholarly information to research and write a literature review. How to Write a Research Question for a Literature Review: A Once you have identified gaps in the literature, the next step is to formulate a research question that addresses these gaps. This involves synthesizing your findings from the literature review and aligning them with your research objectives. A well-formulated research question should be specific, focused, and feasible. Developing a Research Question How to Conduct a Literature Review (Health Sciences and Beyond) Overview of how to get started writing a health sciences literature review. How To Write A Literature Review You need to follow the below-mentioned steps, to write a literature review: 1. Outline and identify the purpose of a literature review. As a first step on how to write a literature review, you must know what the research question or topic is and what shape you want your literature review to take. How To Write An A-Grade Literature Review Learn how to write a literature review in three straightforward steps. Includes free literature review templates and resources. 1. Identify the question You can meet with a librarian to talk about your literature review, or other library-related topics. Identify the question In some cases, such as for a course assignment or a research project you're working on with a faculty mentor, your research question will be determined by your professor. What is a Literature Review? How to Write It (with Examples) A literature review is a comprehensive analysis of existing research on a topic, identifying trends, gaps, and insights to inform new scholarly contributions. Read this comprehensive article to learn how to write a literature review, with examples. Formulating a research question Formulating a research question Clarifying the review question leads to specifying what type of studies can best address that question and setting out criteria for including such studies in the review. This is often called inclusion criteria or eligibility criteria. The criteria could relate to the review topic, the research methods of the studies, specific populations, settings, date limits ... YSN Doctoral Programs: Steps in Conducting a Literature Review What is a literature review? A literature review is an integrated analysis -- not just a summary-- of scholarly writings and other relevant evidence related directly to your research question. That is, it represents a synthesis of the evidence that provides background information on your topic and shows a association between the evidence and your research question. Developing a Research Question You may need to find answers to background questions (i.e. about general knowledge) before forming a research question. Learn more about how to develop research topics into a researchable question. Writing a Literature Review Where, when, and why would I write a lit review? There are a number of different situations where you might write a literature review, each with slightly different expectations; different disciplines, too, have field-specific expectations for what a literature review is and does. For instance, in the humanities, authors might include more overt argumentation and interpretation of source ... Step 1 Formulate your question Formulating a clear, well-defined, relevant and answerable research question is essential to finding the best evidence for your topic. On this page we outline the approaches to developing a research question that can be used as the basis for a review. Ten Simple Rules for Writing a Literature Review Reviewing the literature requires the ability to juggle multiple tasks, from finding and evaluating relevant material to synthesising information from various sources, from critical thinking to paraphrasing, evaluating, and citation skills [7]. In this contribution, I share ten simple rules I learned working on about 25 literature reviews as a PhD and postdoctoral student. Ideas and insights ... Researching for your literature review: Before you start The research question will guide the development of your search strategy so it's important that you take time to do some testing of your proposed question. Having done the preliminary scoping searches as noted above will be helpful in understanding the volume of the literature. This guide will provide a sample search for a health/medical topic ... Conduct a literature review What is a literature review? A literature review is a summary of the published work in a field of study. This can be a section of a larger paper or article, or can be the focus of an entire paper. Literature reviews show that you have examined the breadth of knowledge and can justify your thesis or research questions. They are also valuable tools for other researchers who need to find a ... Systematic reviews: Formulate your question Defining the research question and developing a protocol are the essential first steps in your systematic review. The success of your systematic review depends on a clear and focused question, so take the time to get it right. A framework may help you to identify the key concepts in your research question and to organise your search terms in ... 1. Formulate the Research Question Step 1. Formulate the Research Question A systematic review is based on a pre-defined specific research question ( Cochrane Handbook, 1.1 ). The first step in a systematic review is to determine its focus - you should clearly frame the question (s) the review seeks to answer ( Cochrane Handbook, 2.1 ). It may take you a while to develop a good review question - it is an important step in your ... Define your research question Define your research question. Defining your research question is the key to beginning, so while you may be clear on the area you want to study, chances are there are some nuances that you need to think through. Part of this process may require exploratory searching in databases so that you can see what's already been published on your topic. PDF Chapter 2: The Literature Review Preparing to Write The literature review is more than just a list of previous research papers in the field. If you think of writing a thesis or dissertation as writing a story of your research, the literature review then will be a story within a story. In the literature review story, you tell the reader about general trends, traditions, and approaches to your subject, ones that surround and support your study. PDF Undertaking a literature review: a step'by-step approacii The reasons for undertaking a literature review are numerous and include eliciting information for developing policies and evidence-based care, a step in the research process and as part of an academic assessment. To many qualified nurses and nursing students faced with undertaking a literature review the task appears daunting. Frequently-asked questions range from where to start, how to ... Literature Review: Research Questions Research questions are the beginning to all of your research processes. A research question provides focus to your searches and guides you in selecting the correct sources for your literature review. Either way, research questions: Must be clear and concise in order to be effective. Must consider key themes and elements of the assigned topic ... How to develop a researchable question An introduction to the Literature Review process and resources to help you get started. Getting Started The Literature Review portion of a scholarly article is usually close to the beginning. It often follows the introduction, or may be combined with the introduction.The writer may discuss his or her research question first, or may choose to explain it while surveying previous literature.. If you are lucky, there will be a section heading that includes "literature review". How to Write a Research Paper: A Step by Step Writing Guide Frequently asked questions about how to write a research paper; How to write a research paper in 7 steps: So you're sitting at your computer, staring at a blank document. ... Required components and length—abstract, literature review, reference list, etc. Style guide for citations and body text—MLA, APA, CMOS, AMA, or other; What is the right way of Literature review? As already indicated by others, a literature review should relate to your research question, so have a look what the relation is between your approach and that of others, where it differs, adds ... Foundations of Graduate Writing Series / Workshops 1 & 2 How to write an abstract or literature review? How to find articles based on your research question? How to seamlessly integrate sources into your writing? The Writing Center is here to help! We have partnered with the College of Graduate Studies to help you gain the resources and skills you need to improve your writing skills as you enter into ... Sustainability The present literature review was based on the PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) method, using a checklist, which is linked to a flow diagram of three phases: identification, screening and inclusion. PRISMA is an evidence-based minimum set of items for reporting in systematic reviews and meta-analyses. Journal of Medical Internet Research Background: This scoping review accompanies our research study "The Experience of Health Professionals With Misinformation and Its Impact on Their Job Practice: Qualitative Interview Study." It surveys online health misinformation and is intended to provide an understanding of the communication context in which health professionals must operate. assignment homework phd report resume review speech thesis