apa literature review tense

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Q. According to the APA Style (7th ed.) rules, which verb tense should I use in the different sections of my major research paper?

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Answered By: Theresa Bell (she/her/hers) Last Updated: Nov 04, 2021     Views: 4258

The 7th edition style manual of the American Psychological Association (APA) provides suggestions on which verb tense is appropriate for various sections of a thesis, major project or journal article:

• Past or present perfect tense: "Literature review (or whenever discussing other researchers' work)" (APA, 2020, p. 118), "method" (APA, 2020, 118), and "description of procedure" (APA, 2020, 118)
• Past tense: "Reporting of results" (APA, 2020, p. 118)
• Present tense: "Discussion of implications of results" (APA, 2020, p. 118) and "presentation of conclusions, limitations, future directions, and so forth" (APA, 2020, p. 118).

As much as possible, try to be consistent with your chosen verb tense within a section "to ensure smooth expression" (APA, 2020, p. 118). If the verb tenses suggested above don't make sense for the purposes of your document, please check with your instructor or academic supervisor to get their recommendation on the best approach for your document.

American Psychological Association. (2020). Publication manual of the American Psychological Association  (7th ed.).  https://doi.org/10.1037/0000165-000

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The past tense or present perfect tense are appropriate when discussing a researcher’s work. Use the past or present perfect tenses in your in-text citations.

Berry (2022) and Gimmel et al. (2020) discovered that young people in foster care are at high risk for psychiatric disorders and poor long-term functional outcomes.

Wood (2018) and Winter (2008) used tribal critical race theory to explore the necessity and importance of letting Native people be the authority on their culture’s representation and allowing them to center their lived experiences and speak for themselves.

Present Perfect

Researchers have discovered that young people in foster care are at high risk for psychiatric disorders and poor long-term functional outcomes ( Berry, 2022; Gimmel et al., 2020) .

Other scholars have used tribal critical race theory to explore the necessity and importance of letting Native people be the authority on their culture’s representation and allowing them to center their lived experiences and speak for themselves (Wood, 2018; Writer, 2008).

Common Verbs (Reporting Verbs) Used in Academic Writing

Reporting verbs are used to convey what someone else has said or written. We use these in in-text citations to describe the ideas we are citing from authors’ works.

Tentative Reporting Verbs

Reporting Verb Handout

• Verb Tense & Reporting Verbs

The information on this page formatted as a handout that can be printed for convenient reference as you write.

Neutral Reporting Verbs

Strong Reporting Verbs

Adapted from American Psychological Association publication manual (7th ed.).

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Ten Simple Rules for Writing a Literature Review

Marco pautasso.

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

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

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

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

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

Rule 1: Define a Topic and Audience

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

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

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

Rule 2: Search and Re-search the Literature

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

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

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

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

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

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

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

Rule 3: Take Notes While Reading

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

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

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

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

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

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

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

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

Rule 6: Be Critical and Consistent

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

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

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

Rule 7: Find a Logical Structure

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

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

Rule 8: Make Use of Feedback

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

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

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

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

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

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

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

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

Acknowledgments

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

Funding Statement

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

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Answered By: Linda Kern Last Updated: Dec 12, 2016     Views: 135179

The APA manual discusses tense in the section on Smoothness of Expression on Page 65. The lit review of an APA style paper should be in past tense (The researchers found...) or present perfect (The researchers have shown...). The methodology should be in past tense if it has already happened. The results section of the paper should also be in past tense, and implications of the results and conclusions in present tense.

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APA Stylistics: Basics

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Note:  This page reflects APA 6, which is now out of date. It will remain online until 2021, but will not be updated. There is currently no equivalent 7th edition page, but we're working on one. Thank you for your patience. Here is a link to our APA 7 "General Format" page .

Writing in APA is more than simply learning the formula for citations or following a certain page layout. APA also includes the stylistics of your writing, from point of view to word choice.

Point of View and Voice

When writing in APA Style, you can use the first person point of view when discussing your research steps ("I studied ...") and when referring to yourself and your co-authors ("We examined the literature ..."). Use first person to discuss research steps rather than anthropomorphising the work. For example, a study cannot "control" or "interpret"; you and your co-authors, however, can.

In general, you should foreground the research and not the researchers ("The results indicate ... "). Avoid using the editorial "we"; if you use "we" in your writing, be sure that "we" refers to you and your fellow researchers.

It is a common misconception that foregrounding the research requires using the passive voice ("Experiments have been conducted ..."). This is inaccurate. Rather, you would use pronouns in place of "experiments" ("We conducted experiments ...").

APA Style encourages using the active voice ("We interpreted the results ..."). The active voice is particularly important in experimental reports, where the subject performing the action should be clearly identified (e.g. "We interviewed ..." vs. "The participants responded ..."). 

Consult the OWL handout for more on the distinction between  passive and active voice .

Switching verb tenses can cause confusion for your readers, so you should be consistent in the tense you use. When discussing literature reviews and experimental procedures that have already happened, use past tense ("Our study  showed" ) or present perfect tense ("studies  have proven" ). Also use past tense when discussing results ("students’ concentration increased" ), but use present tense when discussing what your results mean and what conclusions you can draw from them ("Our study illustrates" ).

Clarity and Conciseness

Clarity and conciseness in writing are important when conveying research in APA Style. You don't want to misrepresent the details of a study or confuse your readers with wordiness or unnecessarily complex sentences. 

For clarity, be specific rather than vague in descriptions and explanations. Unpack details accurately to provide adequate information to your readers so they can follow the development of your study.

Example: "It was predicted that marital conflict would predict behavior problems in school-aged children."

To clarify this vague hypothesis, use parallel structure to outline specific ideas:

"The first hypothesis stated that marital conflict would predict behavior problems in school-aged children. The second hypothesis stated that the effect would be stronger for girls than for boys. The third hypothesis stated that older girls would be more affected by marital conflict than younger girls."

To be more concise, particularly in introductory material or abstracts, you should eliminate unnecessary words and condense information when you can (see the OWL handout on  Conciseness  in academic writing for suggestions).

Example: The above list of hypotheses might be rephrased concisely as: "The authors wanted to investigate whether marital conflict would predict behavior problems in children and they wanted to know if the effect was greater for girls than for boys, particularly when they examined two different age groups of girls."

Balancing the need for clarity, which can require unpacking information, and the need for conciseness, which requires condensing information, is a challenge. Study published articles and reports in your field for examples of how to achieve this balance.

Word Choice

You should even be careful in selecting certain words or terms. Within the social sciences, commonly used words take on different meanings and can have a significant effect on how your readers interpret your reported findings or claims. To increase clarity, avoid bias, and control how your readers will receive your information, you should make certain substitutions:

• Use terms like "participants" or "respondents" (rather than "subjects") to indicate how individuals were involved in your research
• Use terms like "children" or "community members" to provide more detail about who was participating in the study
• Use phrases like "The evidence suggests ..." or "Our study indicates ..." rather than referring to "proof" or "proves" because no single study can prove a theory or hypothesis

As with the other stylistic suggestions here, you should study the discourse of your field to see what terminology is most often used.

Avoiding Poetic Language

Writing papers in APA Style is unlike writing in more creative or literary styles that draw on poetic expressions and figurative language. Such linguistic devices can detract from conveying your information clearly and may come across to readers as forced when it is inappropriately used to explain an issue or your findings.

Therefore, you should:

• Minimize the amount of figurative language used in an APA paper, such as metaphors and analogies unless they are helpful in conveying a complex idea,
• Avoid rhyming schemes, alliteration, or other poetic devices typically found in verse
• Use simple, descriptive adjectives and plain language that does not risk confusing your meaning.

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Use of verb tenses in APA, Chicago and MLA styles

APA, Chicago and MLA are the three main referencing systems/writing styles used at Massey. Re commendations they make in relation to verb tenses are summarized below. Implementing these recommendations may be especially important if you are planning to publish work in a journal that requires certain style guidelines to be followed. However, for assignments or theses at Massey, it is important to be guided by any advice your lecturer or supervisor may provide in relation to use of tenses.  

Referring to the ideas of other researchers (e.g. in a literature review)

Simple past tense

• Brown (2019) argued that… However, Small (2020) suggested that…

Present perfect tense

• Doñoso (1992) has demonstrated that…

Note : A shift of tense may be used to indicate that the research findings are still relevant.

• Molland (2018) discovered that educational outcomes improve when….

Describing a method or procedure

• The participants were interviewed…
• Other researchers have followed a similar procedure.

Reporting results (your own or those of others)

• The results supported the hypothesis

Personal reactions

Simple present tense

• I believe …
• I sensed a need for…
• I have encountered challenges…

Commenting on the implications of results or findings

• The findings indicate that…

Presenting limitations

• The limitations of this case study are …

Conclusions

• We can conclude that…

Suggesting future directions

• This is an area for future research

Chicago and MLA

Both Chicago and MLA recommend the use of the simple present tense (e.g. ‘argues’) or present perfect tense (e.g. ‘has argued’) in the following situations:

No matter how long ago the work was published, the present tense is used, and even a deceased author ‘argues’ or ‘claims’.

• Vasquez and Lopez argue that…
• Bailey has outlined …

Discussing the actions of characters in literature

• In Episode 4 of James Joyce’s Ulysses , Leopold Bloom walks to the butchers and buys a pork kidney

Narrating a fictional work’s plot

• The plot of Ulysses centres on the wanderings and encounters of Leopold Bloom in Dublin, Ireland, over the course of a single day (16 June 1904)

Discussing a literary work, author or theme.

• James Joyce structures Ulysses around 18 episodes that loosely mirror episodes in Homer's Odyssey
• The themes of Ulysses include compassion and remorse

Note : If the context is clearly historical (rather than textual), use of the past tense is acceptable.

• Ulysses was published on 2 February 1922, James Joyce’s 40th birthday.

These pages are provided as a guide to proper referencing. Your course, department, school, or institute may prescribe specific conventions, and their recommendations supersede these instructions. If you have questions not covered here, check in the style guide listed above, ask your course coordinator, or ask at Academic Q+A .

Page authorised by Director - Centre for Learner Success Last updated on 17 November, 2020

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To help you understand active and passive voice use, watch this video below by lund university:.

American Psychological Association. (2010).  Publication Manual of the American Psychological Association  (6th ed.). Washington, DC: American Psychological Association.

Azar, B. S.; & Hagen, S. A. (2009). Understanding and Using English Grammar (4th ed.). Englewood Cliffs: Prentice Hall Regents.

English verbs have:

• Two voices: active and passive.
• Three moods: indicative, subjunctive, imperative.
• Two tenses and one time (in the indicative mood): past and present (tenses), future (time).
• Four aspects (in the indicative mood): simple, progressive, perfect, perfect progressive. 

A few examples were created by us   at Ontario Tech University.

Active and passive voice

We   chose   a semi-structured approach (active).

was chosen   (passive).  

Most of the time we use the active voice in speaking. APA recommends that we use the active voice in academic writing as much as possible.

The passive is most frequently used when it is not important to know exactly who performs an action or when the speaker or writer wants to focus attention “on the recipient of the action rather than on the actor” (p. 77). 

Indicative, subjunctive, and imperative mood

 to provide   guidance for the researcher conducting case studies (indicative).

Be   mindful of APA formatting , style and usage issues! (imperative)

be interpreted   properly (subjunctive).

Most of the time,   in both speaking and writing, we use the   indicative   mood. For example, to ask questions and make factual statements.

When we want to express commands and requests, however, we use the imperative mood.

)   and in the verb to be (which remains ‘be’ in the present for all persons and becomes ‘were’ in the past for all persons).

Past, present, and future in the indicative mood

Evaluation feedback  identified   a need for a more condensed checklist for readers and reviewers (past).

constitutes   a case study   varies   (present).

A case study  will  never   provide   conclusions with statistical significance (future).

Simple, progressive, perfect, and perfect progressive aspects in the indicative mood

methodology   for software engineering research   (simple).

The acceptance of empirical studies in software engineering and their contributions to increasing knowledge   is  continuously  growing  (progressive).

We  have found  interviews, observations, archival data and metrics being applicable to software engineering case studies   (perfect).

For the past few years, researchers  have been investigating  the effectiveness of the use of case studies in engineering (perfect progressive).

There are twelve combinations of tenses and aspects in the indicative mood:

• The simple present:   Researchers  investigate  the effectiveness of the use of case studies in engineering.
• The simple past:   Researchers  investigated  the effectiveness of the use of case studies in engineering.
• The simple future:   Researchers  will investigate  the effectiveness of the use of case studies in engineering.
• The present progressive:   Researchers  are investigating  the effectiveness of the use of case studies in engineering.
• The past progressive:   researchers  were investigating  the effectiveness of the use of case studies in engineering.
• The present perfect:   Researchers  have investigated  the effectiveness of the use of case studies in engineering.
• The past perfect:   Researchers  had investigated  the effectiveness of the use of case studies in engineering.
• The future perfect:   Researchers  will have investigated  the effectiveness of the use of case studies in engineering.
• The present perfect progressive:   Researchers  have been investigating  the effectiveness of the use of case studies in engineering.
• The past perfect progressive:   Researchers  had been investigating  the effectiveness of the use of case studies in engineering.
• The future perfect progressive:   Researchers  will have been investigating  the effectiveness of the use of case studies in engineering.

The most commonly used verb tenses in academic writing, however, are the   simple present, simple past, present perfect, and simple future tenses .

APA (2010) says that, in an academic paper:

• The simple past tense is appropriate to describe the results (p. 66).
• The simple present tense is appropriate to discuss implications of the results and to present the conclusions (p. 66).

Note: For more information on verb tenses, see the overview of   past tenses ,   present tenses , and   future times   pages.

Parts of speech

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• 3. Articles
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• Pronoun case
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• That or which? Who or whom?
• Verb tenses

Avoiding incorrect shifts in verb tense

Verb tense in signal phrases and to describe action, get help from the writing centre.

Search  WriteAnswers   for FAQs on your topic:

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RRU community members can use the button below to send your questions directly to the Writing Centre. We'll send you a private reply as soon as we can (typically within one business day of receiving the message).

You will use many different tenses within your writing and shifts between tense are fine, as long as they accurately represent the action described by the passage. Where learners sometimes encounter difficulties is when they mix verb tenses within a sentence or description.

For example, "the tide is high and it flooded the road". 

• "is" indicates simple present tense; "flooded" indicates simple past tense. Choose the correct tense and use that tense throughout the sentence: the tide was high and it flooded the road.

For more information, examples, and self-test exercises, please refer to  The OWL at Purdue: Verb Tense Consistency .

Deciding the appropriate verb tense usually comes down to using the one that best reflects the time period of the action described in the text.

Signal Phrases

The choice of using present or past tense in  signal phrases  for paraphrases or quotations largely depends on the discipline in which authors are writing or the style guide they’re following.

• Present tense: Lee (2015) argues that…
• Past tense: Lee (2015) argued that…

According to APA Style, "the past tense is appropriate when expressing an action or a condition that occurred at a specific, definite time in the past, such as when discussing another researcher's work" (American Psychological Association [APA], 2020, p. 118). When expressing "a past action or condition that did not occur at a specific, definite time or to describe an action beginning in the past and continuing to the present", use the present perfect tense (e.g, Lee (2015) has used...).

Using the past tense to refer to other researcher's work reflects that the quotation or paraphrase presents the author’s thinking at the time of writing the text, which happened in the past. The published text may not reflect the author’s current thinking, so putting the signal phrase in present tense makes a claim that can’t be investigated within the source material. If you’re unsure of which tense to use in signal phrases, please check with your instructor, supervisor, or journal editor.

Describe Action in Text

The APA Style manual provides suggestions on which verb tense is appropriate for various sections of a thesis, major project or journal article:

• Past or present perfect tense: "Literature review (or whenever discussing other researchers' work)" (APA, 2020, p. 118), "method" (APA, 2020, 118), and "description of procedure" (APA, 2020, 118)
• Past tense: "Reporting of results" (APA, 2020, p. 118)
• Present tense: "Discussion of implications of results" (APA, 2020, p. 118) and "presentation of conclusions, limitations, future directions, and so forth" (APA, 2020, p. 118).

As much as possible, try to be consistent with your chosen verb tense within a section "to ensure smooth expression" (APA, 2020, p. 118). If the verb tenses suggested above don't make sense for the purposes of your document, please check with your instructor or academic supervisor to get their opinion on the best approach for your document.

American Psychological Association. (2020). Publication manual of the American Psychological Association  (7th ed.).  https://doi.org/10.1037/0000165-000

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Grammar: Verb Tenses

Most common verb tenses in academic writing.

According to corpus research, in academic writing, the three tenses used the most often are the simple present , the simple past , and the present perfect (Biber et al., 1999; Caplan, 2012). The next most common tense for capstone writers is the future ; the doctoral study/dissertation proposal at Walden is written in this tense for a study that will be conducted in the future.

Biber, D., Johansson, S., Leech, G., Conrad, S., & Finegan, E. (1999). Longman grammar of written and spoken English . Pearson. https://doi.org/10.1162/089120101300346831

Caplan, N. A. (2012). Grammar choices for graduate and professional writers . University of Michigan Press.

Simple present: Use the simple present to describe a general truth or a habitual action. This tense indicates that the statement is generally true in the past, present, and future.

• Example: The hospital admits patients whether or not they have proof of insurance.

Simple past : Use the simple past tense to describe a completed action that took place at a specific point in the past (e.g., last year, 1 hour ago, last Sunday). In the example below, the specific point of time in the past is 1998.

• Example: Zimbardo (1998) researched many aspects of social psychology.

Present perfect: Use the present perfect to indicate an action that occurred at a nonspecific time in the past. This action has relevance in the present. The present perfect is also sometimes used to introduce background information in a paragraph. After the first sentence, the tense shifts to the simple past.

• Example: Numerous researchers have used this method.
• Example: Many researchers have studied how small business owners can be successful beyond the initial few years in business. They found common themes among the small business owners.

Future: Use the future to describe an action that will take place at a particular point in the future (at Walden, this is used especially when writing a proposal for a doctoral capstone study).

• Example: I will conduct semistructured interviews.

Keep in mind that verb tenses should be adjusted after the proposal after the research has been completed. See this blog post about Revising the Proposal for the Final Capstone Document for more information.

APA Style Guidelines on Verb Tense

APA calls for consistency and accuracy in verb tense usage (see APA 7, Section 4.12 and Table 4.1). In other words, avoid unnecessary shifts in verb tense within a paragraph or in adjacent paragraphs to help ensure smooth expression.

• Use the past tense (e.g., researchers presented ) or the present perfect (e.g., researchers have presented ) for the literature review and the description of the procedure if discussing past events.
• Use the past tense to describe the results (e.g., test scores improved significantly).
• Use the present tense to discuss implications of the results and present conclusions (e.g., the results of the study show …).

When explaining what an author or researcher wrote or did, use the past tense.

• Patterson (2012) presented, found, stated, discovered…

However, there can be a shift to the present tense if the research findings still hold true:

• King (2010) found  that revising a document three times improves the final grade.
• Smith (2016) discovered that the treatment is effective.

Verb Tense Guidelines When Referring to the Document Itself

To preview what is coming in the document or to explain what is happening at that moment in the document, use the present or future tense:

• In this study, I will describe …
• In this study, I describe …
• In the next chapter, I will discuss …
• In the next chapter, I discuss …

To refer back to information already covered, such as summaries of discussions that have already taken place or conclusions to chapters/sections, use the past tense:

• Chapter 1 contained my original discussion of the research questions.
• In summary, in this section, I presented information on…

Simple Past Versus the Present Perfect

Rules for the use of the present perfect differ slightly in British and American English. Researchers have also found that among American English writers, sometimes individual preferences dictate whether the simple past or the present perfect is used. In other words, one American English writer may choose the simple past in a place where another American English writer may choose the present perfect.

Keep in mind, however, that the simple past is used for a completed action.  It often is used with signal words or phrases such as "yesterday," "last week," "1 year ago," or "in 2015" to indicate the specific time in the past when the action took place.

• I went to China in 2010 .
• He completed the employee performance reviews last month .

The present perfect focuses more on an action that occurred without focusing on the specific time it happened. Note that the specific time is not given, just that the action has occurred.

• I have travelled to China.

The present perfect focuses more on the result of the action.

• He has completed the employee performance reviews.

The present perfect is often used with signal words such as "since," "already," "just," "until now," "(not) yet," "so far," "ever," "lately," or "recently."

• I have already travelled to China.
• He has recently completed the employee performance reviews.
• Researchers have used this method since it was developed.

Summary of English Verb Tenses

The 12 main tenses:

• Simple present : She writes every day.
• Present progressive: She is writing right now.
• Simple past : She wrote last night.
• Past progressive: She was writing when he called.
• Simple future : She will write tomorrow.
• Future progressive: She will be writing when you arrive.
• Present perfect : She has written Chapter 1.
• Present perfect progressive: She has been writing for 2 hours.
• Past perfect: She had written Chapter 3 before she started Chapter 4.
• Past perfect progressive: She had been writing for 2 hours before her friends arrived.
• Future perfect: She will have written Chapter 4 before she writes Chapter 5.
• Future perfect progressive: She will have been writing for 2 hours by the time her friends come over.

Conditionals:

Zero conditional (general truths/general habits).

• Example: If I have time, I write every day.

First conditional (possible or likely things in the future).

• Example: If I have time, I will write every day.

Second conditional (impossible things in the present/unlikely in the future).

• Example : If I had time, I would write every day.

Third conditional (things that did not happen in the past and their imaginary results)

• Example : If I had had time, I would have written every day.

Subjunctive : This form is sometimes used in that -clauses that are the object of certain verbs or follow certain adjectives. The form of the subjective is the simple form of the verb. It is the same for all persons and number.

• Example : I recommend that he study every day.
• Example: It is important that everyone set a writing schedule.

Verbs Video Playlist

Note that these videos were created while APA 6 was the style guide edition in use. There may be some examples of writing that have not been updated to APA 7 guidelines.

• Grammar for Academic Writers: Common Verb Tenses in Academic Writing (video transcript)
• Grammar for Academic Writers: Verb Tense Consistency (video transcript)
• Grammar for Academic Writers: Advanced Subject–Verb Agreement (video transcript)
• Mastering the Mechanics: Helping Verbs (video transcript)
• Mastering the Mechanics: Past Tense (video transcript)
• Mastering the Mechanics: Present Tense (video transcript)
• Mastering the Mechanics: Future Tense (video transcript)

Related Resources

Knowledge Check: Verb Tenses

Didn't find what you need? Email us at [email protected] .

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What is the correct tense to use in a literature review? [duplicate]

I am currently writing my bachelor thesis and have to do a small literature review for it. Unfortunately, I don't know which tense I should use. Do you write ?

• Hager et. al (2020) show/indicate .....
• Hager et. al (2020) showed/indicated....
• Hager et. al (2020) have shown/indicated ....

I am quite confused about what tense to use.

• literature-review

• Welcome to Academia SE! There are many questions that generally answer the question, "What tense should I use in a paper?" These usually include pointers on what tense to use in the literature review section of a paper, e.g., academia.stackexchange.com/questions/3608/… . –  Tripartio Commented Aug 14, 2023 at 8:47

4 Answers 4

I don't think there are any general standards. It depends on your field and, potentially, your adviser's preferences. I tend to prefer the active tense (since I think that any sentence that mentions a work kind of presents said work), but pick whatever you like as long as you are consistent about it.

(My field is maths/computer science; other domains might have common standards)

• 2 What if their is a clear chronological gap in the literature -- early authors claimed that, while current authors claim that...? That is being consistent about a change in thinking. (Probably not what is happening in the OP's case, but worth considering.) –  Martin F Commented Aug 14, 2023 at 22:45

Generally speaking any are acceptable. If you focus on the authors then "did show" or "have shown" feels about right. But if you take the citation to mean the paper itself, then the present tense is fine since the paper still exists and does still show...

However, advisors can be a bit picky on some such things, so it would be good to ask whether they think it makes a difference.

In a few rare circumstances, future might even work if a paper hasn't yet appeared, as in one of your own. But, as Gnosophilon says, consistency is probably a good choice.

In almost all cases people will understand you no matter how you write it. But there are exceptions, such as when some things need to be put in historical context, perhaps with older results being replace by new research. That doesn't seem to be your concern here, though.

My preference would be option 2, the simple past. There is IMO a good reason to prefer it. Quite often it is natural to say something like "Hager et al. showed [statement]. Subsequently, Smith et al. showed [stronger statement]." This (or anything else that indicates the papers were written at different past times) doesn't really work with either of the other options.

The already-given advice to ask your advisor is good general advice for academia. It doesn't always work; some advisors are less helpful than they should be. But if they will be grading your work, they can be the most reliable about how they want it to look.

Another piece of general writing advice is to look for already-published examples in your field. A lot of papers have a section that is a small literature review - how do they do it? This is nice because you can learn more than just what tense to use.

Not the answer you're looking for? Browse other questions tagged literature-review .

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Literature Review Guide: What tense should I use?

• What is a Literature Review?
• How to start?
• Picking your research question and searching
• Search strategies and Databases
• How to organise the review
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• Library summary
• Last Updated: Aug 8, 2024 4:32 PM
• URL: https://ait.libguides.com/literaturereview