What question did this study set out to answer?

Assess variation in the replicability of 13 classic and contemporary psychological phenomena and determine whether testing environments influence effect sizes.

February 7, 2022Open Access

Investigating Variation in Replicability: A “Many Labs” Replication Project

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Authors

RKRichard KleinTilburg University KRKate A. RatliffUniversity of Waterloo MVMichelangelo VianelloUniversity of Padua

Discussion

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Implication

Multi-site replication study reveals consistent replication of ten of thirteen psychological effects across 36 samples, suggesting replicability depends more on the effect than the setting.

Key Points

Assess variation in the replicability of 13 classic and contemporary psychological phenomena and determine whether testing environments influence effect sizes.
Conducted direct replications of 13 psychological effects across 36 independent samples totaling 6,344 participants.
Compared effect magnitudes across diverse testing conditions, including laboratory versus online platforms and U.S. versus international sites.
Ten of the thirteen effects replicated consistently across the aggregate sample.
Imagined contact reducing prejudice showed weak replicability, while flag priming influencing conservatism and currency priming influencing system justification failed to replicate.
Contextual variations, including sample origin (U.S. vs. international) and administration mode (laboratory vs. online), did not systematically predict effect magnitudes.

Cite This Study

Klein et al. (2022) studied this question.

synapsesocial.com/papers/6a192759a7ec0a017d2658da https://doi.org/10.31234/osf.io/ux8ef

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February 7, 2022Open Access

Investigating Variation in Replicability: A “Many Labs” Replication Project

View Full Paper

Ask AI

Bookmark

Authors

RKRichard KleinTilburg University KRKate A. RatliffUniversity of Waterloo MVMichelangelo VianelloUniversity of Padua

Discussion

Member takes

Implication

Multi-site replication study reveals consistent replication of ten of thirteen psychological effects across 36 samples, suggesting replicability depends more on the effect than the setting.

Key Points

Assess variation in the replicability of 13 classic and contemporary psychological phenomena and determine whether testing environments influence effect sizes.
Conducted direct replications of 13 psychological effects across 36 independent samples totaling 6,344 participants.
Compared effect magnitudes across diverse testing conditions, including laboratory versus online platforms and U.S. versus international sites.
Ten of the thirteen effects replicated consistently across the aggregate sample.
Imagined contact reducing prejudice showed weak replicability, while flag priming influencing conservatism and currency priming influencing system justification failed to replicate.
Contextual variations, including sample origin (U.S. vs. international) and administration mode (laboratory vs. online), did not systematically predict effect magnitudes.

Cite This Study

Klein et al. (2022) studied this question.

synapsesocial.com/papers/6a192759a7ec0a017d2658da https://doi.org/10.31234/osf.io/ux8ef

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