Multivariate analysis of WAIS-MMPI relationships among brain-damaged, schizophrenic, neurotic, and alcoholic patients

Subjected WAIS and MMPI profiles of brain-damaged, process schizophrenic, reactive schizophrenic, neurotic, and alcoholic patients (N = 423) to multiple discriminant and canonical correlational analyses. The groups differed significantly in WAIS and MMPI profile patterns, and the combination of both sets of measures resulted in increased group discrimination compared to either set alone. Nonetheless, despite this element of independence in their contributions to group differentiation, WAIS subtests and MMPI scales were correlated with each other along two significant profile dimensions. The results were seen to provide a multivariate description of intelligence and personality as partially overlapping domains that contain both shared and unique components of variance.