Journal
AGING NEUROPSYCHOLOGY AND COGNITION
Volume 13, Issue 1, Pages 1-19Publisher
PSYCHOLOGY PRESS
DOI: 10.1080/13825580490904183
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Neuropsychological studies suggest a subclinical impairment in executive function that occurs with normal aging. This is the first study to examine the performance of healthy older adults on the Tower of London-Revised (TOL-R), as well as the relationship between TOL-R performance and verbal and nonverbal abilities. Performance of 63 older adult participants on the TOL-R and two WAIS-III subtests was compared to that of 35 young adult college students. Group comparisons indicated age differences in TOL-R performance; however, these were eliminated after adjusting for individual differences in Matrix Reasoning performance. In the older adult groups, multiple regression analyses demonstrated that Matrix Reasoning performance was a stronger predictor of TOL-R performance than was chronological age or years of education. These results suggest that performance on the TOL-R is a psychometrically sound executive function measure for older adults and that individual differences in fluid intelligence are more predictive of performance than chronological age.
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