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The role of meta-analysis and preregistration in assessing the evidence for cleansing effects

Published online by Cambridge University Press:  18 February 2021

Robert M. Ross Open the ORCID record for Robert M. Ross [Opens in a new window] ,
Robbie C. M. van Aert Open the ORCID record for Robbie C. M. van Aert [Opens in a new window] ,
Olmo R. van den Akker Open the ORCID record for Olmo R. van den Akker [Opens in a new window]  and
Michiel van Elk
Robert M. Ross
Affiliation:
Department of Philosophy, Macquarie University, Macquarie Park, NSW 2109, [email protected]://researchers.mq.edu.au/en/persons/robert-ross
Robbie C. M. van Aert
Affiliation:
Department of Methodology & Statistics, 5037 AB Tilburg University, Tilburg, The [email protected]://www.robbievanaert.com/; [email protected]://www.ovdakker.com
Olmo R. van den Akker
Affiliation:
Department of Methodology & Statistics, 5037 AB Tilburg University, Tilburg, The [email protected]://www.robbievanaert.com/; [email protected]://www.ovdakker.com
Michiel van Elk
Affiliation:
Department of Psychology, University of Leiden, 2311 EZLeiden, The Netherlands. [email protected]://www.uva.nl/profiel/e/l/m.vanelk/m.vanelk.html
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Abstract

Lee and Schwarz interpret meta-analytic research and replication studies as providing evidence for the robustness of cleansing effects. We argue that the currently available evidence is unconvincing because (a) publication bias and the opportunistic use of researcher degrees of freedom appear to have inflated meta-analytic effect size estimates, and (b) preregistered replications failed to find any evidence of cleansing effects.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 44 , 2021 , e19
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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