Events The 1st International Online Conference on Human Intelligence

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Published

This submission belongs to the session S4. Approaches to Improving Intelligence of the event The 1st International Online Conference on Human Intelligence

Published date

20 Mar, 2026

Academic Editor

David Giofrè

Citation

Benedikt Steininger, Magdalena Siegel, Ulrich S. Tran, Jelte M. Wicherts, Sandra Oberleiter, Martin Voracek, Jakob Pietschnig, <span>The Decline Effect Permeates Not Only Intelligence Research, But Psychology as a Whole: Meta-Meta-Analytic Evidence From 648 Meta-Analyses</span><span></span>, in Proceedings of The 1st International Online Conference on Human Intelligence, 25 March–26 March 2026, MDPI: Basel, Switzerland

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The Decline Effect Permeates Not Only Intelligence Research, But Psychology as a Whole: Meta-Meta-Analytic Evidence From 648 Meta-Analyses

Benedikt Steininger ^1,2

Magdalena Siegel ³

Ulrich S. Tran ⁴

Jelte M. Wicherts ⁵

Sandra Oberleiter ^1,2

Martin Voracek ⁴

Jakob Pietschnig ¹

1. Department of Developmental and Educational Psychology, Faculty of Psychology, University of Vienna, Austria

2. Vienna Doctoral School in Cognition, Behavior, and Neuroscience (VDS CoBeNe), University of Vienna, Austria

3. Department of Clinical and Health Psychology, Faculty of Psychology, University of Vienna, Austria

4. Department of Cognition, Emotion, and Methods in Psychology, Faculty of Psychology, University of Vienna, Austria

5. Department of Methodology and Statistics, School of Social and Behavioral Sciences, Tilburg University, Netherlands

Abstract

Keywords

decline effect

meta-meta-analysis

replicability

effect misestimation

statistical power