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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Veröffentlicht in:	PloS one 2020-07, Vol.15 (7), p.e0236079-e0236079
Hauptverfasser:	Bakker, Marjan, Veldkamp, Coosje L S, van den Akker, Olmo R, van Assen, Marcel A L M, Crompvoets, Elise, Ong, How Hwee, Wicherts, Jelte M
Format:	Artikel
Sprache:	eng
Schlagworte:	Biology and Life Sciences Comparative analysis Computer and Information Sciences Data collection Decision analysis Engineering and Technology Ethics Committees, Research Evaluation Guidelines Hypotheses Medical ethics Physical Sciences Proposals Psychology Registration Research and Analysis Methods Research ethics Researchers Sample Size Science Policy Social behavior Social Sciences Statistical methods Statistics as Topic - methods Studies Test reliability
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