Factor analysis of the WAIS-R at nine age levels between 16 and 74 years.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D014888:Wechsler Scales