A research paper uses different tenses in different sections. Use past tense for your own methods and results ("we interviewed 30 participants," "the data showed…"). Use present tense for established facts, ongoing conditions, and citing what other scholars argue ("Smith argues that…," "the unemployment rate remains elevated"). Use a mix in the discussion and introduction, matching the logic of each sentence.
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Tense in academic writing is not a stylistic choice — it carries meaning. Past tense signals "this happened once in a specific study." Present tense signals "this is a general or ongoing claim." Mixing them up makes your argument read as uncertain even when the evidence is solid.
Quick rule by section
| Section | Default tense | Why | | --- | --- | --- | | Abstract | Past for methods and findings; present for implications | The work was done; the implications remain | | Introduction | Present for the current state of the field; past when summarizing specific prior studies | Field is ongoing; studies happened | | Literature review | Present tense for what authors argue; past tense for what they did | An argument persists; an action is finished | | Methods | Past tense throughout | Describes a completed procedure | | Results | Past tense throughout | Describes what was observed | | Discussion | Past for your own findings; present for broader implications | Findings happened; implications are ongoing | | Conclusion | Present and future for implications; past when restating results | Results are done; implications continue |
The pattern: past tense for specific events, present tense for ongoing claims. Once you internalize that, the section-by-section rules follow naturally.
The literature review rule (this trips up most students)
When you cite another scholar's work, use present tense for their argument and past tense for their actions. Both of these are correct:
- "Smith (2018) argues that urbanization accelerated economic mobility."
- "Smith (2018) surveyed 500 households in Chicago."
The first is about Smith's argument, which still stands in the literature. The second is about what Smith did, which happened once in 2018. Mixing them up — "Smith argued that urbanization accelerates mobility" — is grammatically fine but signals that you think her claim is outdated, which is usually not what you mean.
There are three common "reporting verbs" for citing other scholars, and they are almost always used in present tense:
- argues, claims, contends, maintains — for a position
- finds, shows, demonstrates, reports — for a finding
- suggests, proposes, posits — for a tentative claim
If you want past tense reporting verbs, they imply the scholar has abandoned the position: "Smith initially argued X but later revised this view." Use sparingly.
The methods and results rule
Methods and results sections stay in past tense throughout. This is non-negotiable in STEM, psychology, and most social sciences:
- "We recruited 120 undergraduates from the introductory psychology subject pool."
- "Participants completed a 20-minute survey measuring attitudes toward X."
- "The intervention group scored significantly higher than the control group (t = 2.3, p less than .05)."
Past tense is correct because methods and results describe a specific study that happened at a specific time.
For first-person voice choices in these sections (whether to say "we interviewed" or "interviews were conducted"), see can I use first person in a research paper.
The discussion section is where it gets mixed
The discussion is the hardest section for tense because every paragraph is doing two jobs: reporting what you found and explaining what it means. The convention:
- Past tense when restating your own findings: "The intervention group showed a 12 percent increase in retention."
- Present tense when interpreting: "This suggests that structured study sessions improve short-term recall."
- Present tense when connecting to the broader literature: "These findings align with Smith's (2018) argument that…"
- Future tense sparingly, only when literally discussing future work: "Future studies should examine…"
If a single discussion paragraph moves through all four, that is normal — it is exactly what a good discussion does. Let the content dictate the tense.
The introduction uses a specific pattern
A research paper introduction almost always follows this tense rhythm:
- Open with present tense to establish the current state of the field or problem.
- Shift to past tense when summarizing specific prior studies.
- Return to present tense for the gap or tension your paper addresses.
- Use future tense or simple present to state what your paper will do.
Example structure:
"Income inequality has widened significantly in the United States over the past two decades [present perfect — ongoing]. Smith (2018) documented this trend in urban labor markets [past — specific study]. However, less is known about how it operates in rural settings [present — gap]. This paper examines the rural case using longitudinal data from 1995 to 2020 [present — what the paper does]."
Four sentences, three tenses, each doing specific work.
For the related question of how formal your tense and voice should feel, see is academic writing formal. For the contractions question that interacts with formality, see can I use contractions.
The common mistakes
Three patterns show up in almost every student draft:
- Present tense throughout the methods section. "We interview 30 participants" reads as either a habitual action or a plan, neither of which is what happened. Past tense only.
- Past tense when citing current scholarship. "Smith argued that X" implies Smith has changed her mind. Use present for positions that still stand.
- Tense shifts within a single paragraph without clear reason. If you jump between past and present mid-paragraph, the reader can't tell which events actually happened and which are ongoing.
When editing, read each paragraph and ask: "Is this describing a specific event (past) or an ongoing state (present)?" The answer picks the tense.
The pillar guide to writing a research paper covers section-level conventions across the full drafting process. When you are scaffolding the first structured draft and want the tense conventions applied at the section level from the start, the research paper workflow sets the right default tense per section, which you then refine during editing.
Frequently asked questions
Can I mix tenses in the same paragraph?
Yes, if each sentence has a reason to be the tense it is. Mixing is a problem only when it is accidental. Methods paragraphs should stay past throughout; discussion paragraphs will mix naturally.
What about the abstract?
The abstract compresses the whole paper into 150 to 250 words and uses the same per-section logic. Methods and results in past tense, implications in present. Most journals publish style guides on this if you look.
Is "the literature suggests" past or present?
Present. "The literature" refers to the current body of scholarship, which exists now. "Suggests" in present tense is correct.
What about historical research papers about events in the past?
Events in the past take past tense ("Lincoln signed the Emancipation Proclamation in 1863"). Analysis of those events in the current scholarly discussion takes present tense ("historians now interpret this as…").