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J Int Neuropsychol Soc. 2014 Jul;20(6):579-87. doi: 10.1017/S1355617714000307. Epub 2014 Jun 24.

Factor structure, convergent validity, and discriminant validity of the NIH Toolbox Cognitive Health Battery (NIHTB-CHB) in adults.

Author information

1
1Department of Neurology,University of California,Davis,California.
2
2Department of Psychiatry,University of California,San Diego,California.
3
3Rusk Institute / Department of Rehabilitation Medicine,New York University,New York,New York.
4
4Institute of Child Development,University of Minnesota,Minneapolis,Minnesota.
5
5Department of Medical Social Sciences,Northwestern University,Chicago,Illinois.

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.

PMID:
24960474
PMCID:
PMC4103956
DOI:
10.1017/S1355617714000307
[Indexed for MEDLINE]
Free PMC Article

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