Abstract
This study reports cross‐sectional data on 156 normal older adults, aged 57–85 years old, who were enrolled in a study that addressed the neuropsychological processes associated with normal aging. The results based on a factor analysis of 12 key neuropsychological measures assessing a broad range of cognitive domains revealed three primary factors: (a) a Verbal Cognitive/Verbal Memory factor; (b) a Nonverbal Cognitive/Nonverbal Memory factor; and (c) a timed, Speed of Processing factor. This analysis accounted for 62% of the overall variance. Univariate regression analyses revealed that, consistent with prior research, tests comprising the third factor (speed of processing) were the most sensitive to changes associated with normal aging.
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