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Factor Structure, Convergent Validity, and Discriminant Validity of the NIH Toolbox Cognitive Health Battery (NIHTB-CHB) in Adults

Published online by Cambridge University Press:  24 June 2014

Dan Mungas ,
Robert Heaton ,
David Tulsky ,
Philip David Zelazo ,
Jerry Slotkin ,
David Blitz ,
Jin-Shei Lai  and
Richard Gershon
Dan Mungas*
Affiliation:
Department of Neurology, University of California, Davis, California
Robert Heaton
Affiliation:
Department of Psychiatry, University of California, San Diego, California
David Tulsky
Affiliation:
Rusk Institute / Department of Rehabilitation Medicine, New York University, New York, New York
Philip David Zelazo
Affiliation:
Institute of Child Development, University of Minnesota, Minneapolis, Minnesota
Jerry Slotkin
Affiliation:
Department of Medical Social Sciences, Northwestern University, Chicago, Illinois
David Blitz
Affiliation:
Department of Medical Social Sciences, Northwestern University, Chicago, Illinois
Jin-Shei Lai
Affiliation:
Department of Medical Social Sciences, Northwestern University, Chicago, Illinois
Richard Gershon
Affiliation:
Department of Medical Social Sciences, Northwestern University, Chicago, Illinois
*
Correspondence and reprint requests to: Dan Mungas, Department of Neurology, 4860 Y Street, Suite 3700, Sacramento, CA 95817. E-mail: dmmungas@ucdavis.edu
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Abstract

The objective of this study is to evaluate the construct validity of the NIH Neurobehavioral Toolbox Cognitive Health Battery (NIHTB-CHB) in adults. Confirmatory factor analysis was used to evaluate the dimensional structure underlying the NIHTB-CHB and Gold Standard tests chosen to serve as concurrent validity criteria for the NIHTB-CHB. These results were used to evaluate the convergent and discriminant validity of the NIHTB-CHB in adults ranging from 20 to 85 years of age. Five dimensions were found to explain the correlations among NIHTB-CHB and Gold Standard tests: Vocabulary, Reading, Episodic Memory, Working Memory and Executive Function/Processing Speed. NIHTB-CHB measures and their Gold Standard analogues defined factors in a pattern that broadly supported the convergent and discriminant validity of the NIHTB-CHB tests. This 5-factor structure was found to be invariant across 20–60 year old (N=159) and 65–85 year old (N=109) age groups that were included in the current validity study. Second order Crystallized Abilities (Vocabulary and Reading) and Fluid Abilities (Episodic Memory, Working Memory, Executive/Speed) factors parsimoniously explained correlations among the five first order factors. These results suggest that the NIHTB-CHB will provide both fine-grained and broad characterization of cognition across the adult age span. (JINS, 2014, 20, 1–9)

Keywords

CognitionConfirmatory factor analysisNIH ToolboxAdultsConstruct validityTest development
Type
Special Series
Information
Journal of the International Neuropsychological Society , Volume 20 , Issue 6 , July 2014 , pp. 579 - 587
Copyright
Copyright © The International Neuropsychological Society 2014 

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