title: Base rates of the WAIS-R intersubtest scatter and VIQ-PIQ discrepancy in normal elderly.
abstract: This study provides base rates for WAIS-R VIQ-PIQ discrepancy and for 3 indices of intersubtest scatter in a sample of high functioning normal elderly. High correlations between indices of scatter, such as (1) range of scatter; (2) Profile Variability Index; and (3) number of subtest scores that significantly deviated from the individual's own mean, indicate that easy-to-compute range can be used as an adequate measure of scatter in many clinical settings. The results suggest that bright elderly individuals display a large degree of scatter. The clinician should base judgment regarding abnormality of the WAIS-R indices on the rarity of the value demonstrated by the individual with respect to the sample of comparable age and intelligence level.
authors.affiliation: UCLA School of Medicine, California State University, Northridge, USA.
authors.forename: M
authors.initials: M
authors.lastname: Mitrushina
authors.forename: P
authors.initials: P
authors.lastname: Satz
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D005260:Female; D006801:Humans; D007360:Intelligence; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D011597:Psychomotor Performance; D012016:Reference Values; D014825:Vocabulary; D014888:Wechsler Scales / Q000706:statistics & numerical data*