Journal
JOURNAL OF CLINICAL AND EXPERIMENTAL NEUROPSYCHOLOGY
Volume 30, Issue 6, Pages 683-690Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/13803390701679893
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This study tested the ecological validity of four Delis-Kaplan Executive Function System (D-KEFS) tests by examining how well performance on D-KEFS measures predicted observed daily functioning in community-dwelling older adults. Older adults ages 65 to 92 years completed four D-KEFS tests requiring planning and cognitive fluency. The four combined D-KEFS measures accounted for approximately 26% of the variance in observed functional ability, when controlling for education and depression, thus supporting the ecological validity of the D-KEFS (Pearson r=.66). However, in a multiple regression analysis, the D-KEFS Trail Making Test-4 was the only measure of executive functioning that accounted for unique, independent variance in observed functional ability.
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