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

• Marjan Bakker ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Resources, Supervision, Writing – original draft, Writing – review & editing

  * E-mail: M.Bakker_1@uvt.nl

  Affiliation Department of Methodology and Statistics, Tilburg University, Tilburg, The Netherlands

  http://orcid.org/0000-0001-9024-337X

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• Coosje L. S. Veldkamp,

  Roles Investigation, Methodology, Resources, Writing – review & editing

  Affiliation Faculty of Social Sciences, Utrecht University, Utrecht, The Netherlands

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• Olmo R. van den Akker,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Methodology and Statistics, Tilburg University, Tilburg, The Netherlands

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• Marcel A. L. M. van Assen,

  Roles Investigation, Methodology, Resources, Writing – review & editing

  Affiliations Department of Methodology and Statistics, Tilburg University, Tilburg, The Netherlands, Department of Sociology, Utrecht University, Utrecht, The Netherlands

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• Elise Crompvoets,

  Roles Investigation, Writing – review & editing

  Affiliations Department of Methodology and Statistics, Tilburg University, Tilburg, The Netherlands, Cito National Institute for Educational Measurement, Arnhem, The Netherlands

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• How Hwee Ong,

  Roles Investigation, Writing – review & editing

  Affiliation Department of Social Psychology, Tilburg University, Tilburg, The Netherlands

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• Jelte M. Wicherts

  Roles Investigation, Methodology, Writing – review & editing

  Affiliation Department of Methodology and Statistics, Tilburg University, Tilburg, The Netherlands

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