A WAIS-R marker for accelerated aging and dementia, Alzheimer's type? Base rates of the Fuld formula in the WAIS-R standardization sample.
Recent reports have provided evidence that a WAIS-R marker for dementia of the Alzheimer's type (DAT) may have value in differential clinical diagnosis. Using the Fuld (1984) formula, this study investigated the prevalence of the WAIS-R marker in the WAIS-R standardization sample (N = 1,880), whose members range in age from 16 to 74 years. The results from the WAIS-R sample suggest no significant age differences in the occurrence of this marker when age-corrected scaled scores are employed. Across age, the occurrence of this marker is about 6.2%. Although there were no significant effects according to race, there were significant sex (males = 7.34%; females = 5.11%) and education effects. For individuals aged 65-74 with some post high school education, the base rate was about 14%. These findings are discussed as they relate to the potential clinical usefulness of this marker in the differential diagnosis of DAT.
Satz
P
P
Neuropsychiatric Institute, University of California, Los Angeles 90024.
Hynd
G W
GW
D'Elia
L
L
Daniel
M H
MH
Van Gorp
W
W
Connor
R
R
D000293:Adolescent; D000328:Adult; D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis* / Q000523:psychology; D001925:Brain Damage, Chronic / Q000175:diagnosis* / Q000523:psychology; D004522:Educational Status; D005260:Female; D006801:Humans; D007206:Individuality; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D012016:Reference Values; D014888:Wechsler Scales