AGE-RELATED DIFFERENCES IN CONCURRENT-TASK PERFORMANCE OF NORMAL ADULTS - EVIDENCE FOR A DECLINE IN PROCESSING RESOURCES
AGE-RELATED DIFFERENCES IN CONCURRENT-TASK PERFORMANCE OF NORMAL ADULTS - EVIDENCE FOR A DECLINE IN PROCESSING RESOURCES
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DOI：
10.1037/0882-7974.7.4.499
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发表时间：
1992-12-01
影响因子：
3.7
通讯作者：
HISCOCK, M
中科院分区：
文献类型：
--
作者：
CROSSLEY, M;HISCOCK, M
A concurrent-task paradigm was used to investigate age-related differences in the attentional capacity of 92 right-handed adults. Young, middle-aged, and elderly Ss were compared as they performed speeded, unimanual finger tapping with and without concurrent silent reading, speaking, and maze completion. There were 2 levels of difficulty for each cognitive task. The decrement in tapping rate from the single- to dual-task condition increased linearly with age. Concurrent-task tapping was slowed more by difficult than by easy tasks, and difficult tasks had a disproportionately disruptive effect on the concurrent performance of elderly Ss. The heightened vulnerability of the elderly to concurrent-task effects cannot be attributed parsimoniously to either general slowing or diminution of a specific resource. Instead the results suggest a reduction in a general-purpose processing resource with increasing age.
