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Do schooling gains yield anomalous Jensen effects? A reply to Flynn (2019) including a meta-analysis

Published online by Cambridge University Press:  21 May 2019

Jan te Nijenhuis Open the ORCID record for Jan te Nijenhuis [Opens in a new window] ,
Esteban van der Boor ,
Yu Yong Choi  and
Kunho Lee
Jan te Nijenhuis
Affiliation:
National Research Center for Dementia, Chosun University, Gwangju, Korea
Esteban van der Boor
Affiliation:
Work and Organizational Psychology, University of Amsterdam, the Netherlands
Yu Yong Choi
Affiliation:
National Research Center for Dementia, Chosun University, Gwangju, Korea
Kunho Lee*
Affiliation:
National Research Center for Dementia, Chosun University, Gwangju, Korea Department of Biomedical Science, Chosun University, Gwangju, Korea
*
*Corresponding author. Email: LeeKho@chosun.ac.kr
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Abstract

A test of Jensen effects is of nil value as a diagnostic instrument when various good-sized meta-analyses show Jensen effects appear for both genetic effects and environmental effects. Using thought experiments, Flynn (2019) claims that some schooling gains yield Jensen effects, which should not be the case for an environmental effect. However, a meta-analysis (K = 12, total N = 60,993, mean r = 0.13) of schooling gains shows no Jensen effect. Real data trump thought experiments, so it is concluded there is no empirical proof of anomalous Jensen effects for schooling gains.

Keywords

Jensen effectsSchooling gainsIQ
Type
Debate
Information
Journal of Biosocial Science , Volume 51 , Issue 6 , November 2019 , pp. 917 - 919
Copyright
© Cambridge University Press, 2019 

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References

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