Being observed magnifies action
Has this study been replicated?
The atlas records 2 reproductions of this study. Recorded outcomes: 1 failed, 1 mixed.
Reproductions
- Reproduction (with author data): Steinmetz et al. (2016, Journal of Personality and Social Psychology), Parsons et al. (2022). OSF. Outcome recorded: computational issues, not checked.
Claim gpvvw3: "Reproduction outcome: Based on these criteria, the claim did not reproduce." (all other 5 claims - single-trace, m6oov9, g39923, gwvvdx, mq11q9 - reproduced)
Outcome read from per-claim Reproduction outcome statements. View paper - Steinmetz JournPerSocPsy 2016 E4Am Somo 93mg, Somo et al. (2026). OSF. Outcome recorded: computationally reproducible, not checked.
Reproduction result: Confirmed. Participants felt that the food portion they had eaten was larger when they were observed by a camera while eating (M(camera) = 4.85, SD = 1.94; M(control) = 4.00, SD = 1.53, t(80) = 2.20, p = 0.30, 95% CI [0.082, 1.610], eta squared = 0.057).
Outcome read from Reproduction result field.
Cite this record
Steinmetz, J., Xu, Q., Fishbach, A., & Zhang, Y. (2016). Being observed magnifies action. Journal of Personality and Social Psychology, 111(6), 852–865. https://doi.org/10.1037/pspi0000065
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