期刊
BRAIN AND COGNITION
卷 49, 期 3, 页码 402-419出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/brcg.2001.1507
关键词
aging; executive control; performance variability; working memory; response time distribution
We examine the hypothesis that the efficiency of executive control processes is less stable over time in older than younger adults. An age-related decrease in the efficiency of executive control should result in an increase in performance variability in task conditions requiring the recruitment of executive control processes and not in task conditions requiring minimal involvement of executive control. Performance variability was similar for younger and older adults in task conditions requiring minimal executive control and greater for older than younger adults in task conditions requiring executive control. These and Other data are consistent with the proposal that aging is associated with a decrease in the stability of executive control over time. (C) 2002 Elsevier Science (USA).
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