Factor analysis of the WMS-R and the WAIS.
A principal components factor analysis of the Wechsler Memory Scale-Revised (WMS-R) and Wechsler Adult Intelligence Scale (WAIS) was performed on 133 patients referred for neuropsychological assessment al a university medical center. Six factors were selected according to the Scree test, percentage of variance extracted, and the meaningfulness of the factors. The factors were labelled as follows: Perceptual Organization, Verbal Comprehension, Attention/Concentration, Complex Verbal Memory, Verbal Paired-Associate Memory, and Visual Paired Associate Memory. The Figurai Memory and Visual Reproduction I & II failed to emerge as a factor separate from the Performance subtests of the WAIS. Two verbal memory factors were found apart from the Verbal subtests of the WAIS.
Department of Psychology, St. Louis University, MO 63103, USA.
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Nicks
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Leonberger
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Munz
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Goldfader