99% Impossible: a Valid, Or Falsifiable, Internal Meta-Analysis

Researchers are increasingly relying on internal meta-analysis (IMA) to document cumulative evidence. We demonstrate that even minor violations of the assumptions underlying IMA invalidate its results—and once established—a false-positive IMA is practically impossible to falsify. We conclude that IMA should be used exclusively for pre-registered many-lab replications.


Joachim Vosgerau, Uri Simonsohn, Leif D. Nelson, and Joseph P. Simmons (2019) ,"99% Impossible: a Valid, Or Falsifiable, Internal Meta-Analysis", in NA - Advances in Consumer Research Volume 47, eds. Rajesh Bagchi, Lauren Block, and Leonard Lee, Duluth, MN : Association for Consumer Research, Pages: 212-216.


Joachim Vosgerau, Bocconi University, Italy
Uri Simonsohn, University of Pennsylvania, USA
Leif D. Nelson, University of California Berkeley, USA
Joseph P. Simmons, University of Pennsylvania, USA


NA - Advances in Consumer Research Volume 47 | 2019

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