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Instability in longitudinal childhood IQ scores of Guatemalan high SES individuals born between 1941-1953.

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posted on 30.04.2019 by Liina Mansukoski, Eef Hogervorst, L.R. Furlan, J. Andres Galvez-Sobral, Katherine Brooke-Wavell, Barry Bogin
Childhood IQ has been used to predict later life outcomes across disciplines in epidemiology, education, and psychology. Most often only a single childhood IQ test is available or is used for these purposes in the belief that IQ is stable across the life course. The primary aim of this study was to examine the longitudinal stability of individuals' IQ test scores derived from school-age tests. The secondary aim was to investigate the association of the pre-adult scores with later life intelligence scores. The longitudinal pre-adult IQ scores of 42 high socioeconomic status Guatemalans born 1941-1953 were analysed and showed low stability of longitudinal test scores. Fluctuations of >1SD were found for 59.5% of the sample. The same participants, aged 64-76 years, were re-assessed and average pre-adult IQ explained 12% of variance in the older age intelligence score. The reasons behind the longitudinal instability in test scores reported in this study remains unknown but the results suggest single point measurements of intelligence before adulthood should be regarded with some caution.

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  • Sport, Exercise and Health Sciences

Published in

PLoS One

Volume

14

Issue

4

Pages

e0215828

Citation

MANSUKOSKI, L.M. ... et al., 2019. Instability in longitudinal childhood IQ scores of Guatemalan high SES individuals born between 1941-1953.. United States, PLoS One, 14(4): e0215828.

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© the authors. Published by Plos

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VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/

Acceptance date

09/04/2019

Publication date

2019-04-25

Copyright date

2019

Notes

This is an Open Access Article. It is published by PloS under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

eISSN

1932-6203

Other identifier

PONE-D-18-30532

Language

en

Location

United States

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