Beyond individual intelligence tests: Application of Cattell-Horn-Carroll Theory

Abstract

The purpose of this study was to examine the applicability of Cattell-Horn-Carroll (CHC) theory across six intelligence tests to better understand the cognitive abilities at a broad construct level, as opposed to narrow test level. Nearly 4000 youth aged 6 to 18 were drawn from seven tests' standardization and linking samples and missing data techniques were used to complete cross-battery analyses. Cross-battery confirmatory factor analyses demonstrated support for a CHC model when the Differential Abilities Scale, Second Edition, Kaufman Assessment Battery for Children, Second Edition, Wechsler Intelligence Scale for Children, Third, Fourth, and Fifth Editions, and Woodcock–Johnson III Tests of Cognitive Abilities were analyzed simultaneously. All but one of the 66 subtests mapped on the CHC broad abilities in accordance with prior CHC classifications. Results also indicated overall intelligence (g) and fluid reasoning (Gf) were statistically indistinguishable. Findings provide further support that the CHC taxonomy is useful for intelligence test classification, interpretation, and development.