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Choices, challenges, and constraints: a pragmatic examination of the limits of mental age matching in empirical research

Published online by Cambridge University Press:  06 May 2021

N. Russo Open the ORCID record for N. Russo [Opens in a new window] ,
E. A. Kaplan-Kahn Open the ORCID record for E. A. Kaplan-Kahn [Opens in a new window] ,
J. Wilson ,
A. Criss  and
J. A. Burack
N. Russo*
Affiliation:
Department of Psychology, Syracuse University, Syracuse, NY, USA
E. A. Kaplan-Kahn
Affiliation:
Department of Psychology, Syracuse University, Syracuse, NY, USA
J. Wilson
Affiliation:
Department of Psychology, Syracuse University, Syracuse, NY, USA
A. Criss
Affiliation:
Department of Psychology, Syracuse University, Syracuse, NY, USA
J. A. Burack
Affiliation:
Department of Educational and Counselling Psychology, McGill University, Montreal, Quebec, Canada
*
Author for Correspondence: Natalie Russo, Associate Professor, Department of Psychology, Syracuse University, 430 Huntington Hall, Syracuse, NY, 13244; E-mail: [email protected]
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Abstract

The work of Ed Zigler spans decades of research all singularly dedicated to using science to improve the lives of children facing different challenges. The focus of this article is on one of Zigler's numerous lines of work: advocating for the practice of mental age (MA) matching in empirical research, wherein groups of individuals are matched on the basis of developmental level, rather than chronological age. While MA matching practices represented a paradigm shift that provided the seeds from which the developmental approach to developmental disability sprouted, it is not without its own limits. Here, we examine and test the underlying assumption of linearity inherent in MA matching using three commonly used IQ measures. Results provide practical constraints of using MA matching, a solution which we hope refines future clinical and empirical practices, furthering Zigler's legacy of continued commitment to compassionate, meaningful, and rigorous science in the service of children.

Keywords

developmental approachintellectual disabilityIQmental age matching
Type
Special Issue Article
Information
Development and Psychopathology , Volume 33 , Special Issue 2: Honoring the Legacy of Ed Zigler's Lifetime Contributions to Science, Society, and Child Wellbeing , May 2021 , pp. 727 - 738
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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