期刊
PSYCHOLOGY AND AGING
卷 25, 期 1, 页码 177-192出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0017122
关键词
cognitive aging; dual-task interference; automatization; practice
Does advancing age reduce the ability to bypass the central bottleneck through task automatization? To answer this question, the authors asked 12 older adults and 20 young adults to first learn to perform an auditory vocal task (low vs. high pitch) in 6 single-task sessions. Their dual-task performance was then assessed with a psychological refractory period paradigm, in which the highly practiced auditory vocal task was presented as Task 2, along with an unpracticed visual manual Task I. Converging evidence indicated qualitative differences in dual-task performance with age: Whereas the vast majority of young adults bypassed the bottleneck, at most 1 of the 12 older adults was able to do so. Older adults are either reluctant to bypass the bottleneck (as a matter of strategy) or have lost the ability to automatize task performance.
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