| Abstract: | We factor analyzed the Wechsler Adult Intelligence Scale—Revised (WAIS—R) protocols of 130 normal elderly. For age and education, Ms?=?81.24 years (SD?=?5.24) and 9.54 years (SD?=?2.50). Results indicated that the WAIS—R may be interpreted as a 1-, 2-, or 3-factor battery. In the 1-factor solution, interpretative emphasis was placed on the Full Scale IQ as a measure of g. In the 2-factor solution, a Verbal Comprehension factor consisted of Information, Digit Span, Vocabulary, Comprehension, and Similarities. A Perceptual Organization factor comprised Block Design, Object Assembly, and Digit Symbol. In the 3-factor solution, the subtest alignments for the Verbal Comprehension and Perceptual Organization factors remained highly similar, whereas Arithmetic constituted a Freedom From Distractibility factor. Overall, 1- or 2-factor models seem to offer the most plausible and parsimonious structures for this sample. Seven subtests had high or intermediate levels of specific variance. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
