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Is the pattern of intellectual growth and decline across the adult life span different for men and women?

Gender comparisons on the WAIS-R were made for 1,480 adults from the standardization sample, ages 20-74 years, to determine whether men and women differ in their age-related patterns of change on tests of fluid and crystallized abilities. Multivariate analyses of covariance and univariate analyses of covariance were conducted, covarying education, to examine the age + gender interactions. These interactions tended to be nonsignificant and trivial for the WAIS-R Verbal and Performance scales and the 11 subtests, which suggests that both men and women maintain their crystallized abilities through old age, but show early, rapid declines in fluid ability. These results were interpreted in terms of the literature on aging and intelligence, gender differences in cognitive abilities, and gender differences in V-P patterns for patients with unilateral brain damage.