Recommendations in pre-registrations and internal review board proposals promote formal power analyses but do not increase sample size.

Recommendations in pre-registrations and internal review board proposals promote formal power analyses but do not increase sample size.

In this preregistered study, we investigated whether the statistical power of a study is higher when researchers are asked to make a formal power analysis before collecting data. We compared the sample size descriptions from two sources: (i) a sample of pre-registrations created according to the gui...

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Bibliographic Details
Main Authors: Marjan Bakker, Coosje L S Veldkamp, Olmo R van den Akker, Marcel A L M van Assen, Elise Crompvoets, How Hwee Ong, Jelte M Wicherts
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2020-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0236079

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https://doi.org/10.1371/journal.pone.0236079

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