Multivariate structure of associations between verbal and nonverbal intelligence among brain-damaged, schizophrenic, neurotic, and alcoholic patients

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The scores of 380 male Ss–brain-damaged, process schizophrenic, reactive schizophrenic, neurotic, and alcoholic patients–on the Verbal and Performance subtests of the WAIS were subjected to canonical correlational and multiple discriminant analyses. Substantial associations between verbal and nonverbal abilities were found for all groups, although these correlations were sufficiently imperfect that each set of subtests contributed independently to group discrimination when combined with the other set. Results support C. Spearman's (1927) view that measures of intelligence contain both general and specific components of variance and not the high degree of differentiation that is sometimes postulated. It is concluded that major forms of psychopathology are characterized more by differences in intellectual profile patterns than by changes in the basic organization of abilities. (18 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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