PMID 16938023
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- Title
Reliability and stability of executive functioning in older adults.
- Authors
Ettenhofer ML, Hambrick DZ, Abeles N
- Year
2006
- Abstract
A number of methodological questions have been raised about the reliability and validity of measuring executive functioning (EF) across multiple time points. In this study, correlational and latent-variable analyses were used to examine test-retest reliability of 5 common measures of EF and the stability of a latent EF construct. One hundred eighteen nondemented older adults were tested twice over a 4- to 8-week period. Findings demonstrated modest reliability of individual EF measures but very high stability of a latent EF construct. Relative contributions of each measure to the latent EF factor did not change across measurement trials. In addition, age-related effects on EF were similar at the 2 time points and were within the expected range. Implications for future studies of EF are discussed.
- Keywords
Aged, Aged, 80 and over, Aging, Factor Analysis, Statistical, Female, Humans, Male, Middle Aged, Models, Statistical, Neuropsychological Tests, Psychomotor Performance, Reading, Reproducibility of Results
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