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the claim
Laughter is contagious.
the verdict
INSUFFICIENT LEANING
Recorded sources
3 sources for · 0 against
Is it true that Laughter is contagious?
Unclear. Several sources state or assume that laughter is contagious, including a reference article noting one person's laughter can provoke laughter in others and a study reporting that hearing laughter often triggers laughter in listeners. None of the placed items fully settles the general claim; they support it only in part or as a background premise.
Verdict: PARTIAL LEAN · 3 sources for, 0 against · Last checked
Evidence for · 3
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Laughter. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Laughter
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More for · 2
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Kamiloglu, R. G., Bryant, G. A., Tybur, J. M., & Sauter, D. (2025). The Sound of Contagious Laughter. doi.org. https://doi.org/10.31219/osf.io/cnqs4_v1
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Chu, X., Remoortere, A. V., Vermeer, S., Vliegenthart, R., & Kruikemeier, S. (2025). The impact of happiness in political ads on party evaluation: A data donation study with emotion recognition. doi.org. https://doi.org/10.1016/j.teler.2025.100196
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held for human review16 Oct 2026
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