Factor analyses of WAIS-R standardization data for samples grouped by sex and race (Black-White) produced congruent factors for the various samples and offered good support for Wechsler's two-scale division of the subtests. The factor structures for males and females produced some interesting differences across the age range that were related to sex-related findings in studies of patients with unilateral brain damage. Additionally, Black males and Black females seemed to use different strategies for solving Wechsler's verbal and nonverbal subtests.
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Kaufman et al. (1991) studied this question.
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