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How to write a superb literature review
Andy Tay is a freelance writer based in Singapore.
You can also search for this author in PubMed Google Scholar
Literature reviews are important resources for scientists. They provide historical context for a field while offering opinions on its future trajectory. Creating them can provide inspiration for one’s own research, as well as some practice in writing. But few scientists are trained in how to write a review — or in what constitutes an excellent one. Even picking the appropriate software to use can be an involved decision (see ‘Tools and techniques’). So Nature asked editors and working scientists with well-cited reviews for their tips.
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Correction 09 December 2020 : An earlier version of the tables in this article included some incorrect details about the programs Zotero, Endnote and Manubot. These have now been corrected.
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7 Writing a Literature Review
Hundreds of original investigation research articles on health science topics are published each year. It is becoming harder and harder to keep on top of all new findings in a topic area and – more importantly – to work out how they all fit together to determine our current understanding of a topic. This is where literature reviews come in.
In this chapter, we explain what a literature review is and outline the stages involved in writing one. We also provide practical tips on how to communicate the results of a review of current literature on a topic in the format of a literature review.
7.1 What is a literature review?
Literature reviews provide a synthesis and evaluation of the existing literature on a particular topic with the aim of gaining a new, deeper understanding of the topic.
Published literature reviews are typically written by scientists who are experts in that particular area of science. Usually, they will be widely published as authors of their own original work, making them highly qualified to author a literature review.
However, literature reviews are still subject to peer review before being published. Literature reviews provide an important bridge between the expert scientific community and many other communities, such as science journalists, teachers, and medical and allied health professionals. When the most up-to-date knowledge reaches such audiences, it is more likely that this information will find its way to the general public. When this happens, – the ultimate good of science can be realised.
A literature review is structured differently from an original research article. It is developed based on themes, rather than stages of the scientific method.
In the article Ten simple rules for writing a literature review , Marco Pautasso explains the importance of literature reviews:
Literature reviews are in great demand in most scientific fields. Their need stems from the ever-increasing output of scientific publications. 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. Given such mountains of papers, scientists cannot be expected to examine in detail every single new paper relevant to their interests. 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. For such summaries to be useful, however, they need to be compiled in a professional way (Pautasso, 2013, para. 1).
An example of a literature review is shown in Figure 7.1.
Video 7.1: What is a literature review? [2 mins, 11 secs]
Watch this video created by Steely Library at Northern Kentucky Library called ‘ What is a literature review? Note: Closed captions are available by clicking on the CC button below.
Examples of published literature reviews
- Strength training alone, exercise therapy alone, and exercise therapy with passive manual mobilisation each reduce pain and disability in people with knee osteoarthritis: a systematic review
- Traveler’s diarrhea: a clinical review
- Cultural concepts of distress and psychiatric disorders: literature review and research recommendations for global mental health epidemiology
7.2 Steps of writing a literature review
Writing a literature review is a very challenging task. Figure 7.2 summarises the steps of writing a literature review. Depending on why you are writing your literature review, you may be given a topic area, or may choose a topic that particularly interests you or is related to a research project that you wish to undertake.
Chapter 6 provides instructions on finding scientific literature that would form the basis for your literature review.
Once you have your topic and have accessed the literature, the next stages (analysis, synthesis and evaluation) are challenging. Next, we look at these important cognitive skills student scientists will need to develop and employ to successfully write a literature review, and provide some guidance for navigating these stages.
Analysis, synthesis and evaluation
Analysis, synthesis and evaluation are three essential skills required by scientists and you will need to develop these skills if you are to write a good literature review ( Figure 7.3 ). These important cognitive skills are discussed in more detail in Chapter 9.
The first step in writing a literature review is to analyse the original investigation research papers that you have gathered related to your topic.
Analysis requires examining the papers methodically and in detail, so you can understand and interpret aspects of the study described in each research article.
An analysis grid is a simple tool you can use to help with the careful examination and breakdown of each paper. This tool will allow you to create a concise summary of each research paper; see Table 7.1 for an example of an analysis grid. When filling in the grid, the aim is to draw out key aspects of each research paper. Use a different row for each paper, and a different column for each aspect of the paper ( Tables 7.2 and 7.3 show how completed analysis grid may look).
Before completing your own grid, look at these examples and note the types of information that have been included, as well as the level of detail. Completing an analysis grid with a sufficient level of detail will help you to complete the synthesis and evaluation stages effectively. This grid will allow you to more easily observe similarities and differences across the findings of the research papers and to identify possible explanations (e.g., differences in methodologies employed) for observed differences between the findings of different research papers.
Table 7.1: Example of an analysis grid
Table 7.3: Sample filled-in analysis grid for research article by Ping and colleagues
Source: Ping, WC, Keong, CC & Bandyopadhyay, A 2010, ‘Effects of acute supplementation of caffeine on cardiorespiratory responses during endurance running in a hot and humid climate’, Indian Journal of Medical Research, vol. 132, pp. 36–41. Used under a CC-BY-NC-SA licence.
Step two of writing a literature review is synthesis.
Synthesis describes combining separate components or elements to form a connected whole.
You will use the results of your analysis to find themes to build your literature review around. Each of the themes identified will become a subheading within the body of your literature review.
A good place to start when identifying themes is with the dependent variables (results/findings) that were investigated in the research studies.
Because all of the research articles you are incorporating into your literature review are related to your topic, it is likely that they have similar study designs and have measured similar dependent variables. Review the ‘Results’ column of your analysis grid. You may like to collate the common themes in a synthesis grid (see, for example Table 7.4 ).
Step three of writing a literature review is evaluation, which can only be done after carefully analysing your research papers and synthesising the common themes (findings).
During the evaluation stage, you are making judgements on the themes presented in the research articles that you have read. This includes providing physiological explanations for the findings. It may be useful to refer to the discussion section of published original investigation research papers, or another literature review, where the authors may mention tested or hypothetical physiological mechanisms that may explain their findings.
When the findings of the investigations related to a particular theme are inconsistent (e.g., one study shows that caffeine effects performance and another study shows that caffeine had no effect on performance) you should attempt to provide explanations of why the results differ, including physiological explanations. A good place to start is by comparing the methodologies to determine if there are any differences that may explain the differences in the findings (see the ‘Experimental design’ column of your analysis grid). An example of evaluation is shown in the examples that follow in this section, under ‘Running performance’ and ‘RPE ratings’.
When the findings of the papers related to a particular theme are consistent (e.g., caffeine had no effect on oxygen uptake in both studies) an evaluation should include an explanation of why the results are similar. Once again, include physiological explanations. It is still a good idea to compare methodologies as a background to the evaluation. An example of evaluation is shown in the following under ‘Oxygen consumption’.
7.3 Writing your literature review
Once you have completed the analysis, and synthesis grids and written your evaluation of the research papers , you can combine synthesis and evaluation information to create a paragraph for a literature review ( Figure 7.4 ).
The following paragraphs are an example of combining the outcome of the synthesis and evaluation stages to produce a paragraph for a literature review.
Note that this is an example using only two papers – most literature reviews would be presenting information on many more papers than this ( (e.g., 106 papers in the review article by Bain and colleagues discussed later in this chapter). However, the same principle applies regardless of the number of papers reviewed.
The next part of this chapter looks at the each section of a literature review and explains how to write them by referring to a review article that was published in Frontiers in Physiology and shown in Figure 7.1. Each section from the published article is annotated to highlight important features of the format of the review article, and identifies the synthesis and evaluation information.
In the examination of each review article section we will point out examples of how the authors have presented certain information and where they display application of important cognitive processes; we will use the colour code shown below:
This should be one paragraph that accurately reflects the contents of the review article.
The introduction should establish the context and importance of the review
Body of literature review
The reference section provides a list of the references that you cited in the body of your review article. The format will depend on the journal of publication as each journal has their own specific referencing format.
It is important to accurately cite references in research papers to acknowledge your sources and ensure credit is appropriately given to authors of work you have referred to. An accurate and comprehensive reference list also shows your readers that you are well-read in your topic area and are aware of the key papers that provide the context to your research.
It is important to keep track of your resources and to reference them consistently in the format required by the publication in which your work will appear. Most scientists will use reference management software to store details of all of the journal articles (and other sources) they use while writing their review article. This software also automates the process of adding in-text references and creating a reference list. In the review article by Bain et al. (2014) used as an example in this chapter, the reference list contains 106 items, so you can imagine how much help referencing software would be. Chapter 5 shows you how to use EndNote, one example of reference management software.
Click the drop down below to review the terms learned from this chapter.
- The quotation from Pautasso, M 2013, ‘Ten simple rules for writing a literature review’, PLoS Computational Biology is use under a CC-BY licence.
- Content from the annotated article and tables are based on Schubert, MM, Astorino, TA & Azevedo, JJL 2013, ‘The effects of caffeinated ‘energy shots’ on time trial performance’, Nutrients, vol. 5, no. 6, pp. 2062–2075 (used under a CC-BY 3.0 licence ) and P ing, WC, Keong , CC & Bandyopadhyay, A 2010, ‘Effects of acute supplementation of caffeine on cardiorespiratory responses during endurance running in a hot and humid climate’, Indian Journal of Medical Research, vol. 132, pp. 36–41 (used under a CC-BY-NC-SA 4.0 licence ).
Bain, A.R., Morrison, S.A., & Ainslie, P.N. (2014). Cerebral oxygenation and hyperthermia. Frontiers in Physiology, 5 , 92.
Pautasso, M. (2013). Ten simple rules for writing a literature review. PLoS Computational Biology, 9 (7), e1003149.
How To Do Science Copyright © 2022 by University of Southern Queensland is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.
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How to Write a Good Scientific Literature Review
Nowadays, there is a huge demand for scientific literature reviews as they are especially appreciated by scholars or researchers when designing their research proposals. While finding information is less of a problem to them, discerning which paper or publication has enough quality has become one of the biggest issues. Literature reviews narrow the current knowledge on a certain field and examine the latest publications’ strengths and weaknesses. This way, they are priceless tools not only for those who are starting their research, but also for all those interested in recent publications. To be useful, literature reviews must be written in a professional way with a clear structure. The amount of work needed to write a scientific literature review must be considered before starting one since the tasks required can overwhelm many if the working method is not the best.
Designing and Writing a Scientific Literature Review
Writing a scientific review implies both researching for relevant academic content and writing , however, writing without having a clear objective is a common mistake. Sometimes, studying the situation and defining the work’s system is so important and takes equally as much time as that required in writing the final result. Therefore, we suggest that you divide your path into three steps.
Define goals and a structure
Think about your target and narrow down your topic. If you don’t choose a well-defined topic, you can find yourself dealing with a wide subject and plenty of publications about it. Remember that researchers usually deal with really specific fields of study.
It is time to be a critic and locate only pertinent publications. While researching for content consider publications that were written 3 years ago at the most. Write notes and summarize the content of each paper as that will help you in the next step.
Time to write
Check some literature review examples to decide how to start writing a good literature review . When your goals and structure are defined, begin writing without forgetting your target at any moment.
Related: Conducting a literature survey? Wish to learn more about scientific misconduct? Check out this resourceful infographic.
Here you have a to-do list to help you write your review :
- A scientific literature review usually includes a title, abstract, index, introduction, corpus, bibliography, and appendices (if needed).
- Present the problem clearly.
- Mention the paper’s methodology, research methods, analysis, instruments, etc.
- Present literature review examples that can help you express your ideas.
- Remember to cite accurately.
- Limit your bias
- While summarizing also identify strengths and weaknesses as this is critical.
Scholars and researchers are usually the best candidates to write scientific literature reviews, not only because they are experts in a certain field, but also because they know the exigencies and needs that researchers have while writing research proposals or looking for information among thousands of academic papers. Therefore, considering your experience as a researcher can help you understand how to write a scientific literature review.
Have you faced challenges while drafting your first literature review? How do you think can these tips help you in acing your next literature review? Let us know in the comments section below! You can also visit our Q&A forum for frequently asked questions related to copyrights answered by our team that comprises eminent researchers and publication experts.
Thank you for your information. It adds knowledge on critical review being a first time to do it, it helps a lot.
yes. i would like to ndertake the course Bio ststistics
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Ten Simple Rules for Writing a Literature Review
1 Centre for Functional and Evolutionary Ecology (CEFE), CNRS, Montpellier, France
2 Centre for Biodiversity Synthesis and Analysis (CESAB), FRB, Aix-en-Provence, France
Literature reviews are in great demand in most scientific fields. Their need stems from the ever-increasing output of scientific publications  . 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  . Given such mountains of papers, scientists cannot be expected to examine in detail every single new paper relevant to their interests  . 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  . For such summaries to be useful, however, they need to be compiled in a professional way  .
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  . 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  . 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  . 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  , 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  ),
- keep a list of papers whose pdfs you cannot access immediately (so as to retrieve them later with alternative strategies),
- use a paper management system (e.g., Mendeley, Papers, Qiqqa, Sente),
- define early in the process some criteria for exclusion of irrelevant papers (these criteria can then be described in the review to help define its scope), and
- do not just look for research papers in the area you wish to review, but also seek previous reviews.
The chances are high that someone will already have published a literature review ( Figure 1 ), if not exactly on the issue you are planning to tackle, at least on a related topic. If there are already a few or several reviews of the literature on your issue, my advice is not to give up, but to carry on with your own literature review,
The bottom-right situation (many literature reviews but few research papers) is not just a theoretical situation; it applies, for example, to the study of the impacts of climate change on plant diseases, where there appear to be more literature reviews than research studies  .
- 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  , 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  . 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  ,  . 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  .
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  . 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  . 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)  .
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  . 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  .
Rule 8: Make Use of Feedback
Reviews of the literature are normally peer-reviewed in the same way as research papers, and rightly so  . 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  .
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  ? 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”  )). 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  –  . I wish everybody good luck with writing a review of the literature.
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.
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.
8 Tips for Writing a Scientific Literature Review Article
A scientific literature review article provides a thorough overview of the current knowledge on a certain topic. The main goal is to consider the difficulties or knowledge gaps in the field and help to fill them out. To write one requires lots of reading, but it can be an intensely satisfying process and produce a work that will be referenced and serve as a resource for students and young researchers.
Unlike an original research article, a literature review usually does not present results, such as from surveys or experiments. It’s mainly based on the combination of a thorough literature survey of published work together with the author’s critical discussion on the subject.
There are different types of literature reviews , like systematic, scoping, and conceptual, but overall, they’re all extremely valuable and useful for the scientific community, in their own way.
The eight steps below will give a simple how on writing a review.
Why to write a scientific literature review
One final note on the why before the how regarding reviews, 8 tips on how to write a scientific literature review (and a good one), 1. define a relevant question or questions that you intend to answer with the review (critical step), 2. do a literature survey, 3. create a datasheet to organize all the important information contained in each material collected, 4. define a structure for the text, 5. add context to your work, 6. extract relevant information from the literature material you selected, 7. add critical discussion, 8. make sure the english is sharp, clear, and well-edited.
There are plenty of reasons to take on the task of writing a review rather than conducting novel research.
First, as a review’s author, you can improve your knowledge of the theme and be on top of the recent findings. You can start to more closely follow the work of leading researchers and get new insights for your own research. And you position yourself as a thought-leader and knowledge-leader in the area. For an up-and-coming area, this is extremely useful.
For example, this review of the remote work literature by Charalampous et al. has been very valuable to me when I completed my dissertation. I connected with the lead author on ResearchGate. and I value our interaction .
If you’re a master’s or PhD candidate, by writing a review you’ll be producing starting material to be used on your dissertation or thesis, not to mention, obviously, that you’ll learn about the review-writing process.
And as mentioned, a good literature review article garners recognition and a considerable number of citations.
Reviews are the mark of a true scholar.
Research studies can be classified as qualitative or quantitative and whether your literature review is focused on one of these classes or the other will have an influence on its design.
The following tips below generally fit both qualitative and quantitative articles, although adaptations can be made in specific topics.
These tips don’t necessarily need to follow the exact order. Reviews can be iterative, and you’ll naturally happen across new references .
That will be your scope. Importantly, keep lists of topics that are and are not within your scope. This will help to determine what you’ll ultimately include in your initial survey.
Search for articles on the theme using appropriate keywords (research terms) and filters.
Include keywords associated with concepts or variables of your interest and also list synonyms or related terms.
For example, let’s say you want to write about drug abuse among college students. You can use the keywords such as “drug abuse”, “substance abuse”, “college students”, “university students”, and “undergraduate students”.
You can add filters to select articles in a specific language (e.g., English or Spanish) or that have been published recently (e.g., last 5 years), for example.
As we see with “college” and “university”, there are commonly different ways to say the same thing, and Boolean operators will help you here. Specifics are given below.
You can do the search directly on publishers’ and journals’ websites, on the reference lists of relevant papers, and using.
For these databases, ideally, you’ll have a good online library to use. There are also ways to find research articles for free .
You can choose from multidisciplinary sources (e.g., Google Scholar , Scopus , Web of Science ), or sources specific to a given area (e.g., Open Edition for social sciences, PubMed for biomedical sciences).
To complement the review, look for materials other than research articles by visiting government websites, international organization websites, and credible newspaper articles.
However you do your search, keep the following in mind:
- Check that there are no similar recent reviews addressing the very same question. Otherwise, there’s obviously no point in going further unless you’re taking a different angle.
- Consider if there’s enough research material to write about. Available literature can vary significantly from topic to topic. Try to examine if there are sufficient articles to make a robust discussion, contrast results and ideas, or make any conclusion. If there is no previous literature review on the subject, even a small number of papers may be OK. If other reviews have already been published, investigate what else has emerged since it was released.
- If your survey results in too many articles, narrow it down by adding new keywords or filters that match the specifications you consider most important. Look for topics that haven’t yet been thoroughly reviewed or for which there are conflicting data worthy of discussion.
- Use Boolean operators (“AND”, “OR”, “NOT”, etc.) together with the keywords to filter the results. Let’s take the same example on drug abuse among college students and imagine you don’t want alcohol to be included as a type of drug abuse in your search. In this case, you can combine keywords and operators this way: “drug abuse” OR “substance abuse” AND “college students” NOT alcohol.
Do a first selection of the articles by reading their titles and abstracts. If that doesn’t provide enough information for you, read the results and conclusions. There’s usually no need to get into the introduction or methods until later.
Eliminate works that don’t match the scope of the review. Then, organize the final data in a way to facilitate the writing process later on.
A based way to do this is using an Excel or Google Sheets spreadsheet. The rows represent each article and columns represent important groups of information such as authors, year of publication, methodology, main findings, etc.
Even better can be to use referencing software such as Mendeley to label and organize the works you download.
Although a literature review’s structure may vary based on journal guidelines and your preferences, it should at least contain a title, keywords, abstract, introduction, main text, discussion, conclusion, and references.
If you’re working on a systematic review, you can add a Methods section to describe the criteria you’ve used to select articles to review. You may also end the review with Future Perspectives for the field, considering your knowledge of the theme.
At this point, you can start considering journals for submission.
As there are many journal options out there, you may find it helpful to use journal finder tools like those at Elsevier , Springer , Wiley , and others .
Carefully read the instructions for authors and the formatting requirements of the journal you choose. Not all journals accept review articles, but there are some journals exclusively dedicated to them.
If publication time is important for you, check the journal or inquire directly to find the normal time for publication.
Start by creating an introduction, ideally not too long, addressing the main concepts and the current state of the field.
Call attention to the relevance of the theme and make clear why a review is needed and how it can be helpful. Then specify the goals of the review and what exactly the reader will find in your text.
If you are doing a more rigorous review, mention data sources and research methods used to select articles and define inclusion and exclusion criteria.
See this systematic literature review about social media and mental health problems in adolescents.
Note that already in the introduction the authors explore the scenario of mental health in adolescents, explain the concept of social media and contextualize what is known and what are the gaps regarding the relationship between social media and mental health problems in adolescents.
As a rigorous systematic literature review, a Methods section gives full details on how the survey was conducted.
In the main text, write about the articles’ findings, including the methods and parameters used. Does this especially if your review is focused on quantitative studies.
When dealing with qualitative studies, you may present the sampling methods applied.
Extract enough information to answer your research questions. You can group articles with similar characteristics and split the text on subheadings accordingly.
You also have the option to mention articles chronologically, if that’s relevant to the work.
Remember to summarize information so the text is objective and clear. You can work with appropriate graphical schemes, images, and tables – these can help the reader to better understand and memorize the important information.
See this literature review on the detection of depression and mental illness signs using social media . The authors divided the main text into subtopics according to the methods used by the analyzed articles to detect signs of mental illness.
A figure is provided to illustrate each method and the number of articles that used it. The review also presents a table summarizing important information from the articles.
Include your point of view and indicate the strengths and weaknesses of the works you wrote about. Address debate on conflicting results, when necessary.
This fits interestingly into the discussion of contrasting concepts, theories, and assumptions presented in different qualitative studies, for instance. Also, recognize the limitations of your own work.
Provide the main conclusion of your literature review. In this final section of the review, it may be interesting to make suggestions for future research.
See this review about the associations between maternal nutrition and breast milk composition . In the subheadings of the main text (“Main results” section), the authors discuss the results of the articles investigated and emphasize conflicting information among studies.
A final discussion is provided addressing the limitations of the studies. The main conclusions obtained from the literature review are presented in the final paragraph.
See this review about maternal obesity and breastfeeding characteristics . The authors present the findings of their literature survey and a “Discussion” section with explanations and possible confounding factors involved.
An individual topic is dedicated to the limitations of their review (for example, the authors say that “9 of the 18 studies included used self-reported maternal weight and height. Such estimates are not completely accurate with the possible risk of misclassification of BMI categories” [Turcksin et al., 2014, p. 180). Special sections approaching the implications of their findings for future research and for clinical practice are also provided.
Check for spelling and grammar mistakes and add all the references correctly. Use reference management software to avoid wasting time with formatting. There are free and user-friendly options to do so (e.g., Zotero , Mendeley ).
Better is to get a professional scientific edit . There are options available for editing. Choose the one that works for you, and make sure they’re capable and qualified.
Good luck with your review!
Denney, A. S., & Tewksbury, R. (2013). How to write a literature review . Journal of Criminal Justice Education, 24 (2):218i234.
Grant, M. J., & Booth, A. (2009). A typology of reviews: an analysis of 14 review types and associated methodologies . Health Information and Libraries Journal, 26 (2):91-108.
Turcksin, R., Bel, S., Galjaard, S., & Devlieger, R. (2014). Maternal obesity and breastfeeding intention, initiation, intensity and duration: a systematic review. Maternal & Child Nutrition , 10 (2), 166-183. https://doi.org/10.1111/j.1740-8709.2012.00439.x
Wee, B. V., & Banister, D. (2016). How to write a literature review paper? Transport Reviews, 36 (2), 278-288.
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How do I Write a Literature Review?: #5 Writing the Review
- Step #1: Choosing a Topic
- Step #2: Finding Information
- Step #3: Evaluating Content
- Step #4: Synthesizing Content
- #5 Writing the Review
- Citing Your Sources
WRITING THE REVIEW
You've done the research and now you're ready to put your findings down on paper. When preparing to write your review, first consider how will you organize your review.
The actual review generally has 5 components:
Abstract - An abstract is a summary of your literature review. It is made up of the following parts:
- A contextual sentence about your motivation behind your research topic
- Your thesis statement
- A descriptive statement about the types of literature used in the review
- Summarize your findings
- Conclusion(s) based upon your findings
Introduction : Like a typical research paper introduction, provide the reader with a quick idea of the topic of the literature review:
- Define or identify the general topic, issue, or area of concern. This provides the reader with context for reviewing the literature.
- Identify related trends in what has already been published about the topic; or conflicts in theory, methodology, evidence, and conclusions; or gaps in research and scholarship; or a single problem or new perspective of immediate interest.
- Establish your reason (point of view) for reviewing the literature; explain the criteria to be used in analyzing and comparing literature and the organization of the review (sequence); and, when necessary, state why certain literature is or is not included (scope) -
Body : The body of a literature review contains your discussion of sources and can be organized in 3 ways-
- Chronological - by publication or by trend
- Thematic - organized around a topic or issue, rather than the progression of time
- Methodical - the focusing factor usually does not have to do with the content of the material. Instead, it focuses on the "methods" of the literature's researcher or writer that you are reviewing
You may also want to include a section on "questions for further research" and discuss what questions the review has sparked about the topic/field or offer suggestions for future studies/examinations that build on your current findings.
Conclusion : In the conclusion, you should:
Conclude your paper by providing your reader with some perspective on the relationship between your literature review's specific topic and how it's related to it's parent discipline, scientific endeavor, or profession.
Bibliography : Since a literature review is composed of pieces of research, it is very important that your correctly cite the literature you are reviewing, both in the reviews body as well as in a bibliography/works cited. To learn more about different citation styles, visit the " Citing Your Sources " tab.
- Writing a Literature Review: Wesleyan University
- Literature Review: Edith Cowan University
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- Next: Citing Your Sources >>
- Last Updated: Aug 22, 2023 1:35 PM
- URL: https://libguides.eastern.edu/literature_reviews
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