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THE HIERARCHICAL FACTOR STRUCTURE OF THE WECHSLER ADULT INTELLIGENCE SCALE
Author(s) -
WALLBROWN F. H.,
BLAHA J.,
WHERRY R. J.
Publication year - 1974
Publication title -
british journal of educational psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.557
H-Index - 95
eISSN - 2044-8279
pISSN - 0007-0998
DOI - 10.1111/j.2044-8279.1974.tb00765.x
Subject(s) - wechsler adult intelligence scale , psychology , wechsler intelligence scale for children , variance (accounting) , g factor , analysis of variance , wechsler preschool and primary scale of intelligence , developmental psychology , factor (programming language) , cognition , statistics , mathematics , psychiatry , physics , accounting , quantum mechanics , magnetic field , computer science , business , programming language
S ummary . A Wherry‐Wherry (1969) hierarchical factor solution was obtained on WAIS subtest intercorrelations reported by Wechsler (1955, 1958) and Doppelt and Wallace (1955) for the following age groups: 16–17, 18–19, 25–34, 45–54, 60–64, 65–69, 70–74 and 75+. An hierarchical arrangement of abilities highly congruent with Vernon's (1950) paradigm of cognitive structure was obtained. A strong g‐factor and two major group factors were clearly evident at all age levels. The g‐factor was defined by substantial loadings from all subtests at all age levels. Removal of variance attributable to g produced almost complete bifurcation between verbal and performance subtests. Verbal subtests at all age levels defined v:ed; performance subtests at all age levels defined k:m. A slight but consistent decrease in g‐variance beyond the mid‐50s was evident. This gradual decrease in g‐variance was accompanied by a parallel increase in variance attributable to the two major group factors.