Correcting the Past: Failures to Replicate Psi

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Operations, Information and Decisions Papers
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psi
precognition
ESP
researcher degrees of freedom
meta-analysis
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Other Social and Behavioral Sciences
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Galak, Jeff
LeBoeuf, Robyn. A
Nelson, Leif. D
Simmons, Joseph. P
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Abstract

Across 7 experiments (N = 3,289), we replicate the procedure of Experiments 8 and 9 from Bem (2011), which had originally demonstrated retroactive facilitation of recall. We failed to replicate that finding. We further conduct a meta-analysis of all replication attempts of these experiments and find that the average effect size (d = 0.04) is no different from 0. We discuss some reasons for differences between the results in this article and those presented in Bem (2011).

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2012-12-01
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Journal of Personality and Social Psychology
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This article may not exactly replicate the final version published in the APA journal. It is not the copy of record.
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