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

Share Proceeding

Featured papers

See More


P6. Marginal Cost Consideration

Ethan Pew, Stony Brook University
Hyunhwan Lee, University of Miami, USA

Read More


Decisional Conflict Predicts Myopia

Paul Edgar Stillman, Ohio State University, USA
Melissa Ferguson, Cornell University, USA

Read More


Sizes are Gendered: Impact of Size Cues in Brand Names on Brand Stereotyping

Kuangjie Zhang, Nanyang Technological University, Singapore
Shaobo (Kevin) Li, Nanyang Technological University, Singapore
Sharon Ng, Nanyang Technological University, Singapore

Read More

Engage with Us

Becoming an Association for Consumer Research member is simple. Membership in ACR is relatively inexpensive, but brings significant benefits to its members.