Does laughter have therapeutic value? MLA paper guide
A three-to-four page MLA research paper on a yes-or-no question, where the honest answer is qualified and the evidence you need sits in medical journals rather than wellness blogs.
Editorial process
Last reviewed · August 10, 2026
What does this laughter research paper actually require?
The title of this assignment is a question with a yes or a no at the end of it, and that is the single most useful thing about it. Does laughter have therapeutic value is not a topic to be surveyed, it is a claim to be argued, and the difference decides your grade. A paper that explains what laughter therapy is, lists things researchers have found, and closes by observing that more research is needed has written a report. A paper that answers the question in its thesis and then defends that answer against the strongest evidence on the other side has written a research paper. Put your answer in the first paragraph, in one sentence, with a qualifier if the evidence needs one. Three to four pages is short enough that a thesis arriving on page two has already cost you a third of the paper.
The honest answer to the question is qualified, and a qualified thesis is stronger here than a confident one because the literature will not support confidence. Laughter interventions have measurable effects on some outcomes and not on others, and the reviews say so explicitly. One systematic review of comedy-based interventions for people with mental health problems found improvement in six published studies and no improvement in two. A randomised trial of laughter therapy improved general health, somatic symptoms, insomnia and anxiety while leaving depression and social dysfunction unchanged. That pattern is your argument. A thesis along the lines that laughter has demonstrable therapeutic value for anxiety, stress and physiological markers while its effect on depression remains unproven is defensible, specific, and gives every body paragraph something to do. It also protects you from the commonest objection to a paper like this, which is that the writer decided the answer before reading anything.
Source quality is where papers on this topic collapse, and the reason is that the topic has a large and cheerful popular literature. Wellness sites, magazine features and hospital marketing pages will all tell you that laughter boosts immunity and lowers blood pressure, usually citing each other. None of that belongs in a research paper. Go to the peer-reviewed work: systematic reviews and meta-analyses first, randomised controlled trials second, and single observational studies only where you need a specific detail. There is a meta-analysis of interventional studies on spontaneous laughter and cortisol, and a meta-analysis of laughter therapy for negative emotions in cancer patients, both of which give you measured effects rather than claims. Using them signals to your instructor that you distinguished evidence from enthusiasm, which is a large part of what a first research paper is teaching.
Be careful with mechanism claims, because this is where the popular sources are least reliable and where a marker will notice. It is one thing to say that a laughter intervention reduced measured anxiety in a trial. It is another to explain that laughter releases endorphins, lowers cortisol, and strengthens the immune system, all of which get asserted constantly and are supported to very different degrees. Cortisol has a meta-analysis behind it. Immune function claims rest on small studies with short follow-up. If you make a physiological claim, attach it to the study that measured that specific thing, and say how large the effect was and in whom. Distinguishing what has been measured from what has been theorised is exactly the analytical move that separates a competent research paper from a well-written summary of things people say.
The format instruction is explicit and it contradicts the general course guidance, so read it carefully. This assignment must be in MLA format, which means in-text parenthetical citations with author and page, a Works Cited page that does not count toward the three to four pages, and MLA heading and pagination conventions. The class's general instructions elsewhere refer to APA, because APA is used for most assignments in the programme. This one is the exception and the exception is stated in the assignment itself, so follow it. Getting this wrong is the cheapest possible way to lose marks on a first research paper, and it is entirely avoidable: check one citation and one Works Cited entry against a current MLA guide before you build the rest, and keep that guide open while you draft rather than trying to convert an APA paper afterwards. Converting is where the mixed-format papers come from.
A note on length, since the brief spends most of its words on it. Three to four pages excluding Works Cited, double spaced, one-inch margins, ten to twelve point type. The instructions specifically forbid padding through large margins, extra leading, wide kerning and inflated type, and they say so with enough irritation that somebody has clearly tried. Running slightly over is explicitly preferred to compressing. What that means practically is that you have room for roughly four body paragraphs, so choose four claims and defend them properly rather than six claims mentioned in passing. Given a qualified thesis, the natural four are the psychological evidence, the physiological evidence, the population or outcome where the effect is weakest, and what follows for practice. Anything that does not serve one of those four is padding of a subtler kind than wide margins, and it costs you the same way.
Likely learning objectives
Inferred from the brief — check these against your own rubric.
- 01Convert the title question into an arguable thesis rather than a topic to survey.
- 02Qualify the claim so it matches what the evidence actually supports.
- 03Distinguish peer-reviewed evidence from popular health writing.
- 04Attach physiological claims to the study that measured them.
- 05Apply MLA format where the assignment overrides the programme's usual APA.
- 06Plan four defended claims rather than six mentioned ones.
Read the full question
Review every instruction before using the planning guidance that follows.
Length, format and what has to be on the page
- 01A research paper of three to four pages, not counting the Works Cited page.
- 02MLA format throughout, including in-text citations and Works Cited.
- 03A thesis that answers whether laughter has therapeutic value.
- 04Evidence drawn from peer-reviewed research supporting and complicating that answer.
- 05Double spacing, one-inch margins and a 10 to 12 point standard typeface.
- 06A proofread manuscript, read once in silence and once aloud.
Thesis, psychological evidence, physiological evidence, limits
The question and your answer
Introduce the claim that laughter is therapeutic, then state your qualified thesis in one sentence.
The psychological evidence
Present trial and review evidence on anxiety, stress and general wellbeing, with the size of the effects.
The physiological evidence
Present the cortisol meta-analysis and related measures, keeping mechanism claims tied to what was measured.
Where the evidence does not hold
Address depression, social dysfunction and the studies reporting no improvement, and explain why that matters to your thesis.
What follows
Close on the practical implication of a qualified answer, without retreating to more research is needed.
Finding evidence rather than enthusiasm
Recommended databases
- PubMed Central, which carries the systematic reviews and trials on laughter interventions
- Your library's academic search interface for psychology and health journals
- Cochrane, for whether a formal review exists on humour or laughter interventions
- The MLA Handbook or your library's MLA guide, for the citation format this assignment requires
Search sequence
- 1.Search for systematic reviews and meta-analyses of laughter or humour interventions before reading anything else.
- 2.For each review, note which outcomes improved and which did not, because that split becomes your thesis.
- 3.Find the cortisol meta-analysis for a physiological claim you can state with an effect attached.
- 4.Find at least one study reporting no benefit, so your counter-argument section rests on a source.
- 5.Discard any source that is not peer-reviewed, however quotable it is.
Reference shortlist
These are authoritative starting points, not a ready-made bibliography. A qualified reviewer must confirm that each source fits the assignment and supports the claim beside which it is cited.
Nothing here is cleared for citation until you have read it.
- 01
Laughter as medicine: A systematic review and meta-analysis of interventional studies evaluating the impact of spontaneous laughter on cortisol levels
PLOS ONE · 2023
The strongest physiological evidence available to you, and the only mechanism claim you can make with a pooled effect behind it.
- 02
Effects of Laughter Therapy on Improving Negative Emotions Associated with Cancer: A Systematic Review and Meta-Analysis
PubMed Central · 2024
Pooled randomised trial evidence in a clinical population, covering anxiety, stress, pain and depression separately, which is what a qualified thesis needs.
- 03
"Beyond laughter": a systematic review to understand how interventions utilise comedy for individuals experiencing mental health problems
Frontiers in Psychiatry · 2023
The source of the split result: improvement in six studies, none in two. Cite it for your counter-evidence section rather than burying it.
- 04
Beneficial effect of laughter therapy on physiological and psychological function in elders
Contemporary Nurse · 2019
A trial reporting improvement in general health, somatic symptoms, insomnia and anxiety but not in depression or social dysfunction. The pattern your thesis should track.
Review before submission
Common mistakes
- Surveying laughter therapy instead of answering the question the title asks.
- Placing the thesis on the second page of a four-page paper.
- Claiming an unqualified benefit that the reviews do not support.
- Citing wellness sites and magazine features as evidence.
- Asserting immune system benefits at the same confidence as cortisol findings.
- Using APA because the rest of the programme does, when this assignment specifies MLA.
- Padding with margins, leading or type size, which the brief calls out directly.
Submission checklist
- The thesis answers yes, no, or yes with a stated qualification, in the first paragraph.
- Every substantive claim is tied to a peer-reviewed source.
- At least one systematic review or meta-analysis is cited.
- Counter-evidence is addressed rather than omitted.
- In-text citations are MLA parenthetical, with page numbers where applicable.
- The Works Cited page is MLA formatted and excluded from the page count.
- Body length falls between three and four pages.
- Margins, spacing and type size match the stated requirements.
Use this guide to plan and review your own work. Follow your institution's rules and read our academic-integrity policy.

Written by
Aaron Bishop
MA, Education
assignment interpretation and research-methods coaching across disciplines
Aaron leads the EssayCrackers editorial desk. He works on how assignment briefs are read — what a rubric is actually asking for, and where students most often answer a different question than the one set.

Reviewed by
Dr. Nathan Cole
PhD, Rhetoric & Composition
Argumentation and thesis development
Nathan teaches first-year composition and directs a university writing center. He reviews EssayCrackers guides for argumentative soundness and citation accuracy.