Confirmatory factor analysis (CFA) was used to test models of the relationship between inspection time (IT) and psychometric measures of intelligence (the eleven subtests of the Wechsler Adult Intelligence Scale-Revised). The sample consisted of 134 healthy adults and was broadly representative of the adult United Kingdom population in terms of the distributions of age and social class. A Nested Factors parameterization consisting of g plus three orthogonal group factors with IT loading on all factors provided a reasonably good fit to the data. Variants on this model that incorporated theoretical and empirically derived constraints were tested; constraining IT to have zero loadings on all factors produced a significant deterioration in fit. Constraining IT to load only on General Intelligence (g) and Perceptual Organization did not produce a significant deterioration; nested variants on this latter model in which IT was constrained to load on either of these two factors alone produced a significant deterioration in fit.
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|Published - 1998