Purdue Online Writing Lab Purdue OWL® College of Liberal Arts
Writing a Literature Review
Welcome to the Purdue OWL
This page is brought to you by the OWL at Purdue University. When printing this page, you must include the entire legal notice.
Copyright ©1995-2018 by The Writing Lab & The OWL at Purdue and Purdue University. All rights reserved. This material may not be published, reproduced, broadcast, rewritten, or redistributed without permission. Use of this site constitutes acceptance of our terms and conditions of fair use.
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.
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: .
- 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.
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.
Find academic papers related to your research topic faster. Try Research on Paperpal
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:
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.
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.
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.
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.
Strengthen your literature review with factual insights. Try Research on Paperpal for free!
How to write a good literature review
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.
Write and Cite as yo u go with Paperpal Research. Start now for free!
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.
Whether you’re exploring a new research field or finding new angles to develop an existing topic, sifting through hundreds of papers can take more time than you have to spare. But what if you could find science-backed insights with verified citations in seconds? That’s the power of Paperpal’s new Research feature!
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 | Cite feature, you get 100% factual insights, with citations backed by 250M+ verified research articles, directly within your writing interface. It also allows you auto-cite references in 10,000+ styles and 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 | Cite” 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 in 10,000+ styles 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.
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 .
Paperpal is a comprehensive AI writing toolkit that helps students and researchers achieve 2x the writing in half the time. It leverages 22+ years of STM experience and insights from millions of research articles to provide in-depth academic writing, language editing, and submission readiness support to help you write better, faster.
Get accurate academic translations, rewriting support, grammar checks, vocabulary suggestions, and generative AI assistance that delivers human precision at machine speed. Try for free or upgrade to Paperpal Prime starting at US$19 a month to access premium features, including consistency, plagiarism, and 30+ submission readiness checks to help you succeed.
Experience the future of academic writing – Sign up to Paperpal and start writing for free!
Related Reads:
- Empirical Research: A Comprehensive Guide for Academics
- How to Write a Scientific Paper in 10 Steps
- How Long Should a Chapter Be?
- How to Use Paperpal to Generate Emails & Cover Letters?
6 Tips for Post-Doc Researchers to Take Their Career to the Next Level
Self-plagiarism in research: what it is and how to avoid it, you may also like, what is the purpose of an abstract why..., research process steps: research procedure and examples, what are citation styles which citation style to..., what are the types of literature reviews , what are research skills definition, importance, and examples , what is phd dissertation defense and how to..., abstract vs introduction: what is the difference , mla format: guidelines, template and examples , machine translation vs human translation: which is reliable..., what is academic integrity, and why is it....
An official website of the United States government
Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( Lock Locked padlock icon ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
- Publications
- Account settings
- Advanced Search
- Journal List
Ten Simple Rules for Writing a Literature Review
Marco pautasso.
- Author information
- Article notes
- Copyright and License information
* E-mail: [email protected]
The author has declared that no competing interests exist.
Collection date 2013 Jul.
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
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,
Figure 1. A conceptual diagram of the need for different types of literature reviews depending on the amount of published research papers and literature reviews.
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.
- 1. Rapple C (2011) The role of the critical review article in alleviating information overload. Annual Reviews White Paper. Available: http://www.annualreviews.org/userimages/ContentEditor/1300384004941/Annual_Reviews_WhitePaper_Web_2011.pdf . Accessed May 2013.
- 2. Pautasso M (2010) Worsening file-drawer problem in the abstracts of natural, medical and social science databases. Scientometrics 85: 193–202 doi: 10.1007/s11192-010-0233-5 [ Google Scholar ]
- 3. Erren TC, Cullen P, Erren M (2009) How to surf today's information tsunami: on the craft of effective reading. Med Hypotheses 73: 278–279 doi: 10.1016/j.mehy.2009.05.002 [ DOI ] [ PubMed ] [ Google Scholar ]
- 4. Hampton SE, Parker JN (2011) Collaboration and productivity in scientific synthesis. Bioscience 61: 900–910 doi: 10.1525/bio.2011.61.11.9 [ Google Scholar ]
- 5. Ketcham CM, Crawford JM (2007) The impact of review articles. Lab Invest 87: 1174–1185 doi: 10.1038/labinvest.3700688 [ DOI ] [ PubMed ] [ Google Scholar ]
- 6. Boote DN, Beile P (2005) Scholars before researchers: on the centrality of the dissertation literature review in research preparation. Educ Res 34: 3–15 doi: 10.3102/0013189X034006003 [ Google Scholar ]
- 7. Budgen D, Brereton P (2006) Performing systematic literature reviews in software engineering. Proc 28th Int Conf Software Engineering, ACM New York, NY, USA, pp. 1051–1052. doi: 10.1145/1134285.1134500 .
- 8. Maier HR (2013) What constitutes a good literature review and why does its quality matter? Environ Model Softw 43: 3–4 doi: 10.1016/j.envsoft.2013.02.004 [ Google Scholar ]
- 9. Sutherland WJ, Fleishman E, Mascia MB, Pretty J, Rudd MA (2011) Methods for collaboratively identifying research priorities and emerging issues in science and policy. Methods Ecol Evol 2: 238–247 doi: 10.1111/j.2041-210X.2010.00083.x [ Google Scholar ]
- 10. Maggio LA, Tannery NH, Kanter SL (2011) Reproducibility of literature search reporting in medical education reviews. Acad Med 86: 1049–1054 doi: 10.1097/ACM.0b013e31822221e7 [ DOI ] [ PubMed ] [ Google Scholar ]
- 11. Torraco RJ (2005) Writing integrative literature reviews: guidelines and examples. Human Res Develop Rev 4: 356–367 doi: 10.1177/1534484305278283 [ Google Scholar ]
- 12. Khoo CSG, Na JC, Jaidka K (2011) Analysis of the macro-level discourse structure of literature reviews. Online Info Rev 35: 255–271 doi: 10.1108/14684521111128032 [ Google Scholar ]
- 13. Rosenfeld RM (1996) How to systematically review the medical literature. Otolaryngol Head Neck Surg 115: 53–63 doi: 10.1016/S0194-5998(96)70137-7 [ DOI ] [ PubMed ] [ Google Scholar ]
- 14. Cook DA, West CP (2012) Conducting systematic reviews in medical education: a stepwise approach. Med Educ 46: 943–952 doi: 10.1111/j.1365-2923.2012.04328.x [ DOI ] [ PubMed ] [ Google Scholar ]
- 15. Dijkers M (2009) The Task Force on Systematic Reviews and Guidelines (2009) The value of “traditional” reviews in the era of systematic reviewing. Am J Phys Med Rehabil 88: 423–430 doi: 10.1097/PHM.0b013e31819c59c6 [ DOI ] [ PubMed ] [ Google Scholar ]
- 16. Eco U (1977) Come si fa una tesi di laurea. Milan: Bompiani.
- 17. Hart C (1998) Doing a literature review: releasing the social science research imagination. London: SAGE.
- 18. Wagner CS, Roessner JD, Bobb K, Klein JT, Boyack KW, et al. (2011) Approaches to understanding and measuring interdisciplinary scientific research (IDR): a review of the literature. J Informetr 5: 14–26 doi: 10.1016/j.joi.2010.06.004 [ Google Scholar ]
- 19. Carnwell R, Daly W (2001) Strategies for the construction of a critical review of the literature. Nurse Educ Pract 1: 57–63 doi: 10.1054/nepr.2001.0008 [ DOI ] [ PubMed ] [ Google Scholar ]
- 20. Roberts PD, Stewart GB, Pullin AS (2006) Are review articles a reliable source of evidence to support conservation and environmental management? A comparison with medicine. Biol Conserv 132: 409–423 doi: 10.1016/j.biocon.2006.04.034 [ Google Scholar ]
- 21. Ridley D (2008) The literature review: a step-by-step guide for students. London: SAGE.
- 22. Kelleher C, Wagener T (2011) Ten guidelines for effective data visualization in scientific publications. Environ Model Softw 26: 822–827 doi: 10.1016/j.envsoft.2010.12.006 [ Google Scholar ]
- 23. Oxman AD, Guyatt GH (1988) Guidelines for reading literature reviews. CMAJ 138: 697–703. [ PMC free article ] [ PubMed ] [ Google Scholar ]
- 24. May RM (2011) Science as organized scepticism. Philos Trans A Math Phys Eng Sci 369: 4685–4689 doi: 10.1098/rsta.2011.0177 [ DOI ] [ PubMed ] [ Google Scholar ]
- 25. Logan DW, Sandal M, Gardner PP, Manske M, Bateman A (2010) Ten simple rules for editing Wikipedia. PLoS Comput Biol 6: e1000941 doi: 10.1371/journal.pcbi.1000941 [ DOI ] [ PMC free article ] [ PubMed ] [ Google Scholar ]
- 26. van Raan AFJ (2004) Sleeping beauties in science. Scientometrics 59: 467–472 doi: 10.1023/B:SCIE.0000018543.82441.f1 [ Google Scholar ]
- 27. Rosenberg D (2003) Early modern information overload. J Hist Ideas 64: 1–9 doi: 10.1353/jhi.2003.0017 [ Google Scholar ]
- 28. Bastian H, Glasziou P, Chalmers I (2010) Seventy-five trials and eleven systematic reviews a day: how will we ever keep up? PLoS Med 7: e1000326 doi: 10.1371/journal.pmed.1000326 [ DOI ] [ PMC free article ] [ PubMed ] [ Google Scholar ]
- 29. Bertamini M, Munafò MR (2012) Bite-size science and its undesired side effects. Perspect Psychol Sci 7: 67–71 doi: 10.1177/1745691611429353 [ DOI ] [ PubMed ] [ Google Scholar ]
- 30. Pautasso M (2012) Publication growth in biological sub-fields: patterns, predictability and sustainability. Sustainability 4: 3234–3247 doi: 10.3390/su4123234 [ Google Scholar ]
- 31. Michels C, Schmoch U (2013) Impact of bibliometric studies on the publication behaviour of authors. Scientometrics doi: 10.1007/s11192-013-1015-7. In press. [ Google Scholar ]
- 32. Tsafnat G, Dunn A, Glasziou P, Coiera E (2013) The automation of systematic reviews. BMJ 346: f139 doi: 10.1136/bmj.f139 [ DOI ] [ PubMed ] [ Google Scholar ]
- 33. Pautasso M, Döring TF, Garbelotto M, Pellis L, Jeger MJ (2012) Impacts of climate change on plant diseases - opinions and trends. Eur J Plant Pathol 133: 295–313 doi: 10.1007/s10658-012-9936-1 [ Google Scholar ]
- View on publisher site
- PDF (179.7 KB)
- Collections
Similar articles
Cited by other articles, links to ncbi databases.
- Download .nbib .nbib
- Format: AMA APA MLA NLM
Add to Collections
Work With Us
Private Coaching
Done-For-You
Short Courses
Client Reviews
Free Resources
How To Write An A-Grade Literature Review
By: Derek Jansen (MBA) | Expert Reviewed By: Dr. Eunice Rautenbach | October 2019
Q uality 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.
Learn More About Lit Review:
How To Choose A Tutor For Your Dissertation
Hiring the right tutor for your dissertation or thesis can make the difference between passing and failing. Here’s what you need to consider.
5 Signs You Need A Dissertation Helper
Discover the 5 signs that suggest you need a dissertation helper to get unstuck, finish your degree and get your life back.
Writing A Literature Review: 4 Time-Saving Hacks
🎙️ PODCAST: Ace The Literature Review 4 Time-Saving Tips To Fast-Track Your Literature...
Research Question 101: Everything You Need To Know
Learn what a research question is, how it’s different from a research aim or objective, and how to write a high-quality research question.
Research Question Examples: The Perfect Starting Point
See what quality research questions look like across multiple topic areas, including psychology, business, computer science and more.
📄 FREE TEMPLATES
Research Topic Ideation
Proposal Writing
Literature Review
Methodology & Analysis
Academic Writing
Referencing & Citing
Apps, Tools & Tricks
The Grad Coach Podcast
38 Comments
Thank you very much. This page is an eye opener and easy to comprehend.
This is awesome!
I wish I come across GradCoach earlier enough.
But all the same I’ll make use of this opportunity to the fullest.
Thank you for this good job.
Keep it up!
You’re welcome, Yinka. Thank you for the kind words. All the best writing your literature review.
Thank you for a very useful literature review session. Although I am doing most of the steps…it being my first masters an Mphil is a self study and one not sure you are on the right track. I have an amazing supervisor but one also knows they are super busy. So not wanting to bother on the minutae. Thank you.
You’re most welcome, Renee. Good luck with your literature review 🙂
This has been really helpful. Will make full use of it. 🙂
Thank you Gradcoach.
Really agreed. Admirable effort
thank you for this beautiful well explained recap.
Thank you so much for your guide of video and other instructions for the dissertation writing.
It is instrumental. It encouraged me to write a dissertation now.
Thank you the video was great – from someone that knows nothing thankyou
an amazing and very constructive way of presetting a topic, very useful, thanks for the effort,
It is timely
It is very good video of guidance for writing a research proposal and a dissertation. Since I have been watching and reading instructions, I have started my research proposal to write. I appreciate to Mr Jansen hugely.
I learn a lot from your videos. Very comprehensive and detailed.
Thank you for sharing your knowledge. As a research student, you learn better with your learning tips in research
I was really stuck in reading and gathering information but after watching these things are cleared thanks, it is so helpful.
Really helpful, Thank you for the effort in showing such information
This is super helpful thank you very much.
Thank you for this whole literature writing review.You have simplified the process.
I’m so glad I found GradCoach. Excellent information, Clear explanation, and Easy to follow, Many thanks Derek!
You’re welcome, Maithe. Good luck writing your literature review 🙂
Thank you Coach, you have greatly enriched and improved my knowledge
Great piece, so enriching and it is going to help me a great lot in my project and thesis, thanks so much
This is THE BEST site for ANYONE doing a masters or doctorate! Thank you for the sound advice and templates. You rock!
Thanks, Stephanie 🙂
This is mind blowing, the detailed explanation and simplicity is perfect.
I am doing two papers on my final year thesis, and I must stay I feel very confident to face both headlong after reading this article.
thank you so much.
if anyone is to get a paper done on time and in the best way possible, GRADCOACH is certainly the go to area!
This is very good video which is well explained with detailed explanation
Thank you excellent piece of work and great mentoring
Thanks, it was useful
Thank you very much. the video and the information were very helpful.
Good morning scholar. I’m delighted coming to know you even before the commencement of my dissertation which hopefully is expected in not more than six months from now. I would love to engage my study under your guidance from the beginning to the end. I love to know how to do good job
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
Like the name of your YouTube implies you are GRAD (great,resource person, about dissertation). In short you are smart enough in coaching research work.
This is a very well thought out webpage. Very informative and a great read.
Very timely.
I appreciate.
Very comprehensive and eye opener for me as beginner in postgraduate study. Well explained and easy to understand. Appreciate and good reference in guiding me in my research journey. Thank you
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.
Submit a Comment Cancel reply
Your email address will not be published. Required fields are marked *
Save my name, email, and website in this browser for the next time I comment.
Submit Comment
- Print Friendly
The Sheridan Libraries
- Write a Literature Review
- Sheridan Libraries
- Evaluate This link opens in a new window
What Will You Do Differently?
Please help your librarians by filling out this two-minute survey of today's class session..
Professor, this one's for you .
Introduction
Literature reviews take time. here is some general information to know before you start. .
- VIDEO -- This video is a great overview of the entire process. (2020; North Carolina State University Libraries) --The transcript is included --This is for everyone; ignore the mention of "graduate students" --9.5 minutes, and every second is important
- OVERVIEW -- Read this page from Purdue's OWL. It's not long, and gives some tips to fill in what you just learned from the video.
- NOT A RESEARCH ARTICLE -- A literature review follows a different style, format, and structure from a research article.
- Next: Evaluate >>
- Last Updated: Jul 30, 2024 1:42 PM
- URL: https://guides.library.jhu.edu/lit-review
Have a language expert improve your writing
Run a free plagiarism check in 10 minutes, automatically generate references for free.
- Knowledge Base
- Dissertation
- What is a Literature Review? | Guide, Template, & Examples
What is a Literature Review? | Guide, Template, & Examples
Published on 22 February 2022 by Shona McCombes . Revised on 7 June 2022.
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.
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 summarise sources – it analyses, synthesises, and critically evaluates to give a clear picture of the state of knowledge on the subject.
Make your writing flawless in 1 upload
Be assured that you'll submit flawless writing. Upload your document to correct all your mistakes.
Table of contents
Why write 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, frequently asked questions about literature reviews, introduction.
- Quick Run-through
- Step 1 & 2
When you write a dissertation or thesis, you will 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 scholarly context
- Develop a theoretical framework and methodology for your research
- Position yourself in relation to other researchers and theorists
- Show how your dissertation addresses a gap or contributes to a debate
You might also have to write a literature review as a stand-alone assignment. In this case, the purpose is to evaluate the current state of research and demonstrate your knowledge of scholarly debates around a topic.
The content will look slightly different in each case, but the process of conducting a literature review follows the same steps. We’ve written a step-by-step guide that you can follow below.
Prevent plagiarism, run a free check.
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 objectives and questions .
If you are writing a literature review as a stand-alone assignment, you will have to choose a focus and develop a central question to direct your search. Unlike a dissertation research question, this question has to be answerable without collecting original data. You should be able to answer it based only on a review of existing publications.
Make a list of keywords
Start by creating a list of keywords related to your research topic. 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 if 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 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 use boolean operators to help narrow down your search:
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.
To identify the most important publications on your topic, take note of recurring citations. If the same authors, books or articles keep appearing in your reading, make sure to seek them out.
You probably won’t be able to read absolutely everything that has been written on the topic – you’ll have to evaluate which sources are most relevant to your questions.
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?
- How does the publication contribute to your understanding of the topic? What are its key insights and arguments?
- 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 find out how many times an article has been cited on Google Scholar – a high citation count means the article has been influential in the field, and should certainly be included in your literature review.
The scope of your review will depend on your topic and discipline: in the sciences you usually only review recent literature, but in the humanities you might take a long historical perspective (for example, to trace how a concept has changed in meaning over time).
Remember that you can use our template to summarise and evaluate sources you’re thinking about using!
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’s important to keep track of your sources with references to avoid plagiarism . It can be helpful to make an annotated bibliography, where you compile full reference 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.
You can use our free APA Reference Generator for quick, correct, consistent citations.
The only proofreading tool specialized in correcting academic writing
The academic proofreading tool has been trained on 1000s of academic texts and by native English editors. Making it the most accurate and reliable proofreading tool for students.
Upload my document
To begin organising your literature review’s argument and structure, you need to 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 organising the body of a literature review. You should have a rough idea of your strategy before you start writing.
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 summarising sources in order.
Try to analyse 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 organise 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.
If you are writing the literature review as part of your dissertation or thesis, reiterate your central problem or research question and give a brief summary of the scholarly context. You can emphasise the timeliness of the topic (“many recent studies have focused on the problem of x”) or highlight a gap in the literature (“while there has been much research on x, few researchers have taken y into consideration”).
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, make sure to follow these tips:
- Summarise and synthesise: give an overview of the main points of each source and combine them into a coherent whole.
- Analyse and interpret: don’t just paraphrase other researchers – add your own interpretations, 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 transitions and topic sentences to draw connections, comparisons and contrasts.
In the conclusion, you should summarise the key findings you have taken from the literature and emphasise their significance.
If the literature review is part of your dissertation or thesis, reiterate how your research addresses gaps and contributes new knowledge, or discuss how you have drawn on existing theories and methods to build a framework for your research. This can lead directly into your methodology section.
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 dissertation , thesis, research paper , or proposal .
There are several reasons to conduct a literature review at the beginning of a research project:
- To familiarise 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 dissertation . After the introduction , it grounds your research in a scholarly field and leads directly to your theoretical framework or methodology .
Cite this Scribbr article
If you want to cite this source, you can copy and paste the citation or click the ‘Cite this Scribbr article’ button to automatically add the citation to our free Reference Generator.
McCombes, S. (2022, June 07). What is a Literature Review? | Guide, Template, & Examples. Scribbr. Retrieved 11 November 2024, from https://www.scribbr.co.uk/thesis-dissertation/literature-review/
Is this article helpful?
Shona McCombes
Other students also liked, how to write a dissertation proposal | a step-by-step guide, what is a theoretical framework | a step-by-step guide, what is a research methodology | steps & tips.
- Knowledge Base
- Get started
How to Write a Literature Review: Comprehensive Strategies and AI Tools
Discover how to craft an effective literature review using comprehensive strategies and AI tools. This guide offers step-by-step advice on organizing sources, synthesizing information, and leveraging AI to streamline the literature review process.
How to Write a Literature Review: A Step-by-Step Guide
A literature review is an essential part of academic research that involves summarizing, analyzing, and synthesizing existing research on a particular topic. It serves as a critical component of the research process, helping you to build a solid foundation for your study by demonstrating your understanding of the current state of knowledge. Whether you are writing a thesis, dissertation, or research paper, a strong literature review not only establishes the foundation of your work but also helps to articulate the significance of your research by highlighting existing gaps, showcasing what has been done, and creating a clear context for your own research to fit into. This means that you are not just summarizing existing literature; you are actively engaging with it to justify the importance of your study and show where your research contributes to advancing the field.
A well-crafted literature review enables you to identify patterns, contradictions, and trends in the research, which ultimately helps you position your own work within the larger academic conversation. It showcases your ability to critically engage with the literature, assess the quality of existing studies, and synthesize information from a wide array of sources to present a cohesive overview. This process of summarizing, analyzing, and synthesizing is essential not just for understanding what has already been discovered, but for demonstrating to your readers and reviewers that you have a thorough grasp of the topic and are aware of the ongoing debates in the field.
In addition to identifying gaps and shaping the framework of your research, a literature review also plays an important role in avoiding redundancy. By thoroughly exploring existing studies, you can ensure that your research addresses new or underexplored areas, thereby making a unique contribution to the field. Whether you are conducting a systematic review to support a hypothesis or providing an overview to set the stage for new questions, an effective literature review is an invaluable tool that guides your entire research process.
In this guide, we will take you through the key steps to writing a comprehensive and well-structured literature review, from formulating a research question to evaluating sources, organizing themes, and writing up your findings. Our aim is to help you approach the task methodically and confidently, ensuring that your literature review not only meets academic standards but also adds significant value to your research project.
What is a Literature Review?
A literature review is a critical examination of the body of literature related to a particular research topic. It is not merely a summary of past research but a careful and deliberate selection of sources that collectively help shape the narrative of your research. The literature review goes beyond simply presenting what has been said on the topic; it contextualizes your research within the existing body of knowledge, showing how your work builds on, challenges, or fills gaps in the current understanding.
The purpose of a literature review is multifaceted. First and foremost, it demonstrates that you understand the key debates, discussions, and the broader landscape of scholarship in your field. This means critically engaging with the theories, findings, and methodologies of other researchers. By doing so, you establish the relevance of your own research, showing that you are informed about the topic and aware of the ongoing conversations that your study contributes to. Additionally, a literature review identifies gaps that your study aims to fill, helping to justify the need for your research.
A well-conceived literature review involves a careful balance of summarizing, analyzing, and synthesizing the information gathered from different sources. You need to present what each source says, evaluate its strengths and weaknesses, and relate it to the overall themes and direction of your study. This requires not only a clear understanding of each individual source but also an ability to draw connections between them, identify common threads, and highlight areas of disagreement or contention. By identifying patterns and drawing comparisons, you create a coherent picture of the existing research and set the stage for your own contributions.
Moreover, a good literature review should guide the reader through the evolution of thought on a topic, showcasing how ideas have developed over time and what questions remain unanswered. You can highlight how different scholars approach the same problem in various ways, thus adding nuance to your discussion. This is especially important for showing that you can critically assess the quality and credibility of existing studies. For example, you might point out methodological strengths in certain works and limitations in others, helping to make a case for the robustness of your approach.
Furthermore, the literature review isn't static—it's part of an ongoing process. New studies and data can emerge even as you conduct your research, which might influence the direction of your study. Therefore, a literature review also requires staying up-to-date with the latest developments, indicating that your research is relevant and responsive to the newest findings in the field. Engaging with the most current literature showcases that your work is informed and that it pushes the boundaries of what is already known.
In addition to these functions, a literature review can also help highlight diverse viewpoints. In some fields, debates and differing opinions are prevalent, and a strong literature review will not shy away from acknowledging these controversies. Instead, it will provide a balanced overview of varying perspectives, indicating the richness and complexity of the research landscape. By addressing these differing viewpoints, you add credibility to your own research, as it shows that you are not ignoring dissenting voices but rather are critically engaging with them to arrive at a well-supported conclusion.
A successful literature review is, therefore, a roadmap for your entire research project. It tells the reader where your research fits in, what it aims to address, and how it plans to do so. It is the bridge between what is already known and what your study aims to discover, and it sets up the foundation upon which your research is built.
Step-by-Step Guide to Writing a Literature Review
1. define your research question or topic.
The first step in creating a literature review is to clearly define your research question or topic. Knowing exactly what you are trying to explore will help you focus on finding the right sources. Your topic should be specific enough to limit the scope but broad enough to encompass significant research. Spend some time refining your research question, making sure it is neither too narrow nor too vague. A well-defined topic will serve as the guiding light throughout your literature review process, allowing you to determine what is relevant and what is not.
Consider breaking down your research question into smaller, manageable components. For instance, if your topic is broad, think of sub-questions that can help give your review a more detailed focus. Ask yourself questions like: What are the main concepts or variables involved? Are there specific populations or settings that you want to focus on? Defining these parameters early on will save you time later and will make your literature review more targeted and effective.
It is also helpful to frame your research question in a way that allows for a critical approach. Instead of simply asking "What is the impact of X on Y?" try asking questions that allow for exploration, comparison, or evaluation, such as "How does X compare to Y in terms of impact?" or "What factors influence the relationship between X and Y?" This type of question provides more scope for discussion and synthesis of multiple sources, which is essential for a robust literature review.
Furthermore, take time to review preliminary literature to ensure that your research question is feasible. If you find that there is too much information available, you may need to narrow your focus. Conversely, if there is too little information, you might need to broaden the scope or choose a different angle. The goal is to find a balance where your topic is sufficiently covered in existing literature, but still offers room for your unique contributions. This preparation step will make it much easier to navigate the subsequent phases of your literature review and will help ensure that your efforts are well-directed from the outset.
2. Search for Relevant Literature
The next step is to conduct a thorough search for relevant literature. Start by consulting academic databases such as Google Scholar, JSTOR, or PubMed to find credible sources. These platforms provide access to a wide variety of academic journals, books, and conference papers that are crucial for a well-rounded review. Make sure to use a combination of keywords, including synonyms and related concepts, to ensure you cover a broad range of research. Experiment with Boolean operators like AND, OR, and NOT to refine your searches effectively and obtain more precise results.
In addition to these databases, consider looking at specialized repositories that are specific to your field of study. For example, PsycINFO is an excellent resource for psychology-related research, while IEEE Xplore is perfect for those focusing on engineering and technology topics. Exploring multiple databases will ensure that your literature search is comprehensive and not restricted to a limited range of sources.
It's also helpful to set aside dedicated time to perform iterative searches. Often, initial searches may not yield all the information needed, and it's necessary to refine your keywords or try new combinations to discover more relevant literature. Keep an organized list of your search terms and the databases you have already explored, as this will help you avoid redundant work and ensure a systematic approach.
Consider keeping an organized list of your sources, including key information like the author, publication year, key arguments, and relevance to your topic. Tools like reference managers (e.g., Zotero, Mendeley) can be invaluable for this task. These tools allow you to store references, take notes, and easily format your bibliography, saving you considerable time in the long run. You may also want to create an annotated bibliography at this stage, summarizing the key points of each source and its relevance. This will help you stay organized and make it easier to integrate these sources into your literature review later.
Don't forget to check the reference lists of the articles you find particularly relevant. This technique, known as 'backward searching,' can lead you to other important studies that you might have missed during your initial search. Similarly, consider 'forward searching,' where you look at newer papers that have cited the article you're reading. This can help you find recent developments and ensure your literature review is up-to-date with the latest research in the field.
3. Evaluate and Select Sources
Not every source is worth including in your literature review. It is important to evaluate the credibility and relevance of the literature you find carefully. Look at several factors, including the methodology used, the reliability of data presented, the author's background and qualifications, and whether the research has been peer-reviewed. Understanding the research design, data collection, and analysis methods will help you determine whether the source is reliable and applicable to your work. Sources with rigorous methodologies are generally more trustworthy and contribute more valuable insights to your review.
Another critical aspect to consider is the publication date. Focus on sources that are up-to-date, particularly in rapidly evolving fields such as technology or medicine. However, older, foundational sources may still be valuable for providing historical context or explaining the evolution of theories over time. Balancing newer sources with seminal works can help provide a well-rounded understanding of your topic, demonstrating both breadth and depth in your literature review.
Additionally, consider the relevance of each source to your specific research question. Not all sources that mention your topic are equally valuable; prioritize those that directly contribute to the argument or context you are building. Ask yourself: Does this source address the specific aspects of my research question? Does it add new insights, support my thesis, or offer a contrasting viewpoint that is worth discussing? Being selective is key, as including too many irrelevant sources can dilute the impact of your literature review.
Evaluate the impact of the research within the field as well. Some studies have a greater influence and are frequently cited by other researchers. These high-impact sources are often critical to understanding the state of research on a topic. Tools like Google Scholar can help you determine how often a source has been cited, which can serve as an indicator of its significance. Including these well-cited sources in your literature review can strengthen the credibility of your arguments.
Don't forget to assess the author's background and potential biases. Knowing the author's credentials, institutional affiliations, and other publications can help you gauge the perspective from which the research is conducted. Authors affiliated with reputable academic institutions or organizations are generally more reliable, but it's still important to be aware of any potential biases that might affect the research. For example, industry-funded studies might be more likely to support outcomes favorable to the sponsor, which is something you should note in your evaluation.
Discard sources that do not meet these criteria. Sources with unclear methodologies, outdated information, questionable reliability, or that lack relevance to your specific research question should be excluded from your review. The goal is to include sources that provide robust, high-quality, and relevant information that helps build a solid foundation for your own research. By being diligent in this evaluation process, you ensure that your literature review is both comprehensive and trustworthy, ultimately supporting the credibility and value of your research project.
4. Identify Key Themes and Gaps
Once you have gathered your literature, start identifying common themes, areas of agreement, and areas of debate. Look closely at the different aspects of your topic that have been explored and note how various studies relate to one another. Are there consistent findings that point to a general consensus? Conversely, are there areas where researchers disagree, presenting conflicting evidence or different interpretations of the data? Recognizing these points of agreement and contention will help you create a balanced and nuanced literature review.
Are there patterns emerging across different studies? For instance, you might find that many researchers have focused on a particular population or context, which can indicate a trend or bias in the field. Highlighting these patterns can help you identify where the majority of research effort has been concentrated and where there may be gaps that need to be addressed. Also, pay attention to methodological similarities or differences—do researchers tend to use the same approaches, or are there contrasting methods that yield different results? Understanding these methodological patterns will give you insights into the strengths and weaknesses of the existing body of research.
Are there gaps or inconsistencies in the research? Identifying gaps in the literature is crucial, as it shows where further exploration is needed. Look for areas that have been overlooked or not sufficiently explored, and think about how your research could fill these voids. Gaps can include under-researched populations, overlooked variables, or even questions that have not been answered satisfactorily. Additionally, inconsistencies in findings are another important aspect to consider—are there studies that contradict one another? If so, why might these discrepancies exist? Could they be due to different methodologies, sample sizes, or interpretations? Highlighting these inconsistencies will not only help you position your work but also indicate the complexity of the topic.
Identifying these aspects will help you organize your review effectively and determine where your own research fits in. By clearly defining the key themes and gaps, you can create a literature review that does more than summarize existing research—it actively critiques and synthesizes the body of work, providing a meaningful context for your own study. This comprehensive approach will help demonstrate the value of your research and show that you are contributing to an ongoing scholarly conversation rather than simply reiterating what has already been done.
5. Structure Your Literature Review
A well-structured literature review typically follows a clear organizational pattern. There are several approaches you can choose from, depending on the nature of your research question and the body of literature available. One common method is the chronological approach , which organizes sources by publication date. This approach is particularly useful when you want to demonstrate how research has evolved over time or when there has been a significant shift in perspectives within your field. For example, you can show how early studies laid the groundwork for later research, or how advancements in technology influenced newer studies and methodologies.
Alternatively, a thematic approach groups sources by major topics, themes, or concepts rather than by time. This is especially useful when multiple studies address similar topics but from different angles or methodologies. By grouping sources thematically, you can highlight the different facets of your topic, such as recurring themes, points of agreement, and areas of debate. This approach can help you provide a more cohesive understanding of the literature, demonstrating how various aspects of the topic connect and interact with one another.
Another option is to use a methodological approach , which organizes sources based on the research methods used. This is particularly effective if you want to highlight how different research methods have contributed to the understanding of a topic. By categorizing studies based on qualitative, quantitative, or mixed methods, you can analyze the strengths and limitations of each approach and show how different methodologies offer complementary insights. This type of structure can help underscore the robustness of your research question and position your study as filling a methodological gap in the literature.
You may also opt for a theoretical framework approach , where you organize your literature review based on the theoretical perspectives that guide the research. This approach is beneficial when discussing different theoretical lenses, such as social constructivism, positivism, or feminist theory, and how these theories shape the interpretation of findings. By using a theoretical approach, you can give your reader a better understanding of the various frameworks that inform the current body of literature and how your research contributes to or challenges these perspectives.
Make sure your structure makes it easy for readers to understand the evolution of research on your topic. Begin with broader concepts and foundational studies before narrowing down to more specific issues directly related to your research question. Providing a logical flow from general to specific allows your reader to grasp the bigger picture before delving into the finer details, thereby enhancing overall comprehension. Additionally, using subheadings for each section within your chosen structure can improve readability and help your readers navigate the review more effectively.
Regardless of the approach you choose, clarity and logical progression are key. The structure should guide your reader smoothly from one point to the next, helping them understand not only what has been studied but also why each piece of research is important. A well-structured literature review will naturally lead your reader to see the gaps that your research aims to fill, setting up a strong foundation for your research objectives and questions.
6. Write Your Review
Once you have an organized structure, start writing your literature review. Begin with an introduction that explains the scope of your review and outlines the main themes. The introduction should also include the reasons why this literature is relevant to your research, highlighting the gaps that your study will address. Establishing a clear rationale helps orient the reader and sets expectations for what is to come. Mention briefly the methodologies and key concepts that will be explored in your literature review to give the reader a roadmap of the discussion ahead.
In the body , summarize each source and discuss its contributions to the field, providing critical analysis where necessary. Each section of the body should cover a different theme or sub-topic, depending on the organizational approach you have chosen. For each source, consider summarizing the main arguments, but also add your own critical perspective on how the research contributes to the field and how it relates to other studies. Highlight the strengths of each study, such as innovative methodologies or significant findings, as well as the weaknesses, such as limited sample sizes or potential biases. This critical engagement not only adds depth to your literature review but also demonstrates your ability to think analytically about the literature.
Use subheadings to organize themes and make it easier for readers to follow. Subheadings also help to create a logical flow, making it clear how different areas of research link together. When transitioning between sections, use transitional sentences that help the reader understand how the literature evolves from one theme to the next. For instance, after discussing one theme, you could introduce the next by showing how it builds on or contrasts with the previous findings. This approach ensures that the reader is not only absorbing information but also understanding the connections between different pieces of research.
Be sure to include direct quotes where they add value, but use them sparingly and ensure that they are well-integrated into your own writing. Paraphrasing and summarizing are usually more effective because they demonstrate your understanding of the material. When you do use direct quotes, follow them up with a critical interpretation to explain why that particular point is important for your research.
Finish your literature review with a conclusion that ties everything together. Recap the main themes, highlight gaps, and explain how your research will address those gaps. A strong conclusion will reinforce the importance of your research and show that you have laid the foundation for your own work. In addition, the conclusion should reiterate how your findings contribute to the broader field of study and why addressing the identified gaps is essential. This not only establishes the value of your work but also helps the reader see the path forward for future research. If applicable, propose areas for further investigation that arise from your review, which will demonstrate a forward-thinking approach and highlight potential contributions beyond your immediate research.
7. Cite Your Sources Properly
Proper citation is crucial in a literature review. Using the correct citation style required by your institution or publication (e.g., APA, MLA, Chicago) ensures that your work adheres to academic standards and makes it easy for readers to locate the original sources. The choice of citation style is often based on the discipline—for example, APA is commonly used in social sciences, while MLA is favored in the humanities. Familiarizing yourself with the nuances of your required style will help ensure that your citations are formatted correctly, which reflects positively on your attention to detail.
Correct citation not only adds credibility to your literature review but also helps you avoid plagiarism, which is a serious offense in academic work. Properly acknowledging the contributions of other researchers shows that you have engaged with the existing body of literature and gives credit where it is due. It also allows your readers to verify your sources, which strengthens the reliability of your arguments and demonstrates transparency in your research process. To maintain accuracy, make sure to cite not just direct quotes but also paraphrased ideas and any data or insights that are not your own.
To make this process more manageable, consider using reference managers like Zotero, EndNote, or Mendeley. These tools can help you organize your citations efficiently, allowing you to easily store, organize, and retrieve references. They also enable you to create bibliographies in the required style automatically, saving considerable time when finalizing your literature review. In addition, reference managers can be used to add notes to each reference, helping you keep track of why each source is relevant and how it contributes to your overall review.
Another important consideration is consistency. Ensure that all in-text citations and references in your bibliography follow the same format and meet the guidelines of the chosen citation style. Even minor inconsistencies, such as misplaced commas or incorrect italics, can detract from the professionalism of your work. Taking the time to double-check each citation for consistency will enhance the quality of your literature review.
It may also be beneficial to familiarize yourself with tools like citation guides or online resources (e.g., Purdue OWL) that provide examples and rules for specific citation styles. These resources can be particularly useful when you are unsure about how to cite unusual sources, such as government documents, personal interviews, or multimedia sources. Remember that accurate citation not only validates your work but also contributes to the academic community by making it easier for others to follow the research trail.
Tips for a Successful Literature Review
- Be selective : Don’t try to include everything you find. Focus on high-quality, relevant sources. Prioritize peer-reviewed journal articles, well-regarded books, and foundational texts that provide significant insights into your topic. Selectivity ensures that your literature review remains focused and directly contributes to your research goals.
- Stay organized : Keep a detailed record of your searches and sources. Annotated bibliographies are a useful tool. Tools like Mendeley, EndNote, or Zotero can help you keep your sources organized and allow you to easily insert citations as you write. Creating a system to tag or categorize your sources can make it easier to retrieve information when needed.
- Balance summary with critical analysis : Your literature review should not be a mere collection of summaries. Aim to synthesize and analyze, showing the relationships between different studies. Make connections between sources by highlighting how they build on, support, or contradict each other. This approach will help to provide depth to your review and illustrate the broader conversations happening within your research field.
- Revise and refine : Writing a literature review is an iterative process. Revise your draft to ensure it flows logically and effectively communicates your points. Revisiting and refining the organization of your review can help ensure that your argument builds logically and that your findings are presented in a compelling manner.
- Use mind maps or charts : Visual tools such as mind maps or thematic charts can help you organize ideas and see relationships among various studies more clearly. These tools are particularly useful for identifying themes, gaps, and patterns across multiple sources, and they can make the writing process smoother by providing a visual roadmap of your arguments.
- Keep track of evolving research : Stay updated on new publications even as you are working on your literature review. Use alerts on academic databases to receive notifications of new studies related to your topic. Incorporating the most recent research shows that your review is current and relevant, which can be especially important in rapidly changing fields.
- Consult with peers or advisors : Don’t hesitate to seek feedback on your literature review from peers, advisors, or mentors. They may provide insights or identify gaps that you’ve missed, helping to strengthen the quality of your work. Peer feedback is also helpful for identifying areas where the flow or clarity of your review could be improved.
- Define and refine your scope : Clearly define the scope of your literature review at the outset. Are you focusing on a specific time period, demographic, methodology, or geographic area? Being explicit about your scope will make it easier to decide which sources to include and which to exclude, ensuring that your review remains focused and relevant.
- Develop a critical voice : Don’t simply report what other studies have said; evaluate their contributions. What are the strengths and weaknesses of the methodologies used? Are the conclusions justified by the data? Developing a critical voice means that you are actively engaging with the literature and providing your own interpretation rather than passively summarizing.
- Be mindful of biases : Evaluate potential biases in the literature, such as funding sources, publication bias, or the author's background. Addressing these biases in your literature review adds depth and shows your ability to critically engage with the literature, enhancing the credibility of your work.
- Link to your research question : Throughout your review, continually link back to your own research question. Explicitly state how each study relates to or informs your research. This makes your literature review more cohesive and ensures that every source you include serves a purpose in building the foundation for your study.
Final Thoughts
Writing a literature review can feel overwhelming, especially if you’re new to academic research. However, by breaking it down into manageable steps and staying organized, you can create a literature review that provides a solid foundation for your research. Remember, the goal is not just to summarize existing studies but to synthesize the information and create a compelling narrative that supports your research question.
It's important to remember that a literature review is not a one-time task but rather an iterative process. You may need to revisit your review multiple times as new studies emerge or as your research takes on a clearer direction. Each iteration allows you to refine your synthesis, making your arguments stronger and your narrative more compelling. Flexibility is key—be open to changing your perspective if new evidence suggests a better approach or reveals a different gap in the literature.
Another valuable approach is to continuously question the relevance of the literature you include. Ask yourself: Does this source add real value to my argument? Does it strengthen the rationale behind my research question? By being selective and ensuring that each source is directly relevant to your objectives, you can create a focused and impactful literature review. This level of discernment is what differentiates a well-crafted literature review from one that simply lists sources without a cohesive purpose.
Don't underestimate the power of collaboration during the literature review process. Discussing your findings, interpretations, and gaps with peers or mentors can provide new insights that you may not have considered. Feedback from colleagues can help pinpoint areas that need more depth or clarify arguments that are not as strong. Collaboration is particularly helpful when synthesizing diverse viewpoints, as it allows you to gain a different perspective on the same body of literature, adding richness to your review.
Additionally, managing your time effectively is crucial. Set milestones for each stage of your literature review—from identifying your research question to finalizing your written review. Breaking the task into smaller, time-bound goals will not only make it more manageable but will also ensure that you stay on track and do not become overwhelmed by the volume of information. Time management also allows you to allocate periods for revising and refining, which are critical to producing a polished final product.
Finally, remember that a well-written literature review does more than serve as a backdrop for your research; it sets the stage for everything that follows. By establishing a clear context, identifying gaps, and linking existing knowledge to your research objectives, your literature review becomes the foundation that justifies your study. The more effort you put into crafting a cohesive and thorough review, the more effectively it will support your research, helping to establish your credibility as a scholar and making a meaningful contribution to your field.
With practice and careful planning, your literature review can become a powerful part of your academic writing, adding depth and context to your work.
Sourcely weekly newsletters
Cut through the AI noise with a focus on Students! Subscribe for 3 Student AI tools every week to accelerate your academic career.
Join Sourcely weekly newsletters
Ready to get started.
Start today and explore all features with up to 300 characters included. No commitment needed — experience the full potential risk-free!
Check out our other products
Discover cutting-edge research with arXivPulse: Your AI-powered gateway to scientific papers
Don't stress about deadlines. Write better with Yomu and simplify your academic life.
Welcome to Sourcely! Our AI-powered source finding tool is built by students for students, and this approach allows us to create a tool that truly understands the needs of the academic community. Our student perspective also enables us to stay up-to-date with the latest research and trends, and our collaborative approach ensures that our tool is continually improving and evolving.
- Refund Policy
- Terms of Service
- Privacy Policy
- Friends of Sourcely
- ArXiv Pulse
- Semantic Reader
- AI Tools Inc
© 2024 Sourcely
IMAGES
VIDEO
COMMENTS
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 ...
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.
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 ...
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” )). This implies that literature reviewers would do well to keep an eye on electronic lists of papers in press, given ...
3. Evaluate and select literature. 4. Analyze the literature. 5. Plan the structure of your literature review. 6. Write your literature review. Other resources to help you write a successful 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.
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.
Literature reviews take time. Here is some general information to know before you start. VIDEO -- This video is a great overview of the entire process. (2020; North Carolina State University Libraries) --The transcript is included. --This is for everyone; ignore the mention of "graduate students". --9.5 minutes, and every second is important.
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. There are five key steps to writing a literature review: Search for relevant literature. Evaluate sources.
A literature review is an essential part of academic research that involves summarizing, analyzing, and synthesizing existing research on a particular topic. It serves as a critical component of the research process, helping you to build a solid foundation for your study by demonstrating your understanding of the current state of knowledge.