Investigating Variation in Replicability: A \"Many Labs\" Replication Project
Klein, Ratliff, Vianello and colleagues tested variation in the replicability of thirteen classic and contemporary psychological effects across 36 independent samples totalling 6,344 participants, on the grounds that direct replications are rare in psychology despite replication being a central tenet of science. In the aggregate, ten effects replicated consistently. One, imagined contact reducing prejudice, showed weak support for replicability. Two did not replicate: flag priming influencing conservatism, and currency priming influencing system justification. The authors also compared whether conditions such as laboratory against online administration, or United States against international samples, predicted effect magnitudes. This publication cites the study as the first of the Many Labs projects and as the earliest large-scale evidence that the replication problem was concentrated rather than general, with both failures falling in the priming literature.
Klein, Ratliff, Vianello and colleagues tested variation in the replicability of thirteen classic and contemporary psychological effects across 36 independent samples totalling 6,344 participants, on the grounds that direct replications are rare in psychology despite replication being a central tenet of science. In the aggregate, ten effects replicated consistently. One, imagined contact reducing prejudice, showed weak support for replicability. Two did not replicate: flag priming influencing conservatism, and currency priming influencing system justification. The authors also compared whether conditions such as laboratory against online administration, or United States against international samples, predicted effect magnitudes. This publication cites the study as the first of the Many Labs projects and as the earliest large-scale evidence that the replication problem was concentrated rather than general, with both failures falling in the priming literature.
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Reproduced as it was written when this source was checked, figures and all.
Klein, R. A., Ratliff, K. A., Vianello, M., et al. (2014). 'Investigating variation in replicability: A many labs replication project.' Social Psychology, 45(3), 142-152. Thirteen effects across 36 samples and 6,344 participants; ten replicated consistently, one weakly, and two, flag priming and currency priming, did not. doi:10.1027/1864-9335/a000178
Where we use it
- The Psychology You Learned Didn't Replicate, Why We Act
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The source
https://doi.org/10.1027/1864-9335/a000178
DOI: 10.1027/1864-9335/a000178