Hierarchical factor structure of the Wechsler Intelligence Scale for Children—III.

R. J. Wherry and R. J. Wherry (1969) hierarchical factor solutions were obtained on the Wechsler Intelligence Scale for Children—III intercorrelations reported in the standardization sample ( D. Wechsler, 1991). Two- and 4-factor solutions were obtained for the 6-7, 8-10, 11-13, and 14-16 age levels. Both solutions indicated a strong general intelligence (g) factor at all 4 age levels. At the primary level, factors corresponding to the verbal-numerical-educational and spatial-mechanical practical dimensions from Vernon's (1950) paradigm emerged when a 2-factor solution was used. When a 4-factor solution was used, Perceptual Organization, Perceptual Speed, Verbal Comprehension, and Freedom From Distractibility factors were obtained at the primary level. (PsycINFO Database Record (c) 2010 APA, all rights reserved)