Capacity limitations of a classic M-power measure: A modified dual-task approach

被引:12
作者
Foley, EJ [1 ]
Berch, DB [1 ]
机构
[1] UNIV CINCINNATI,DEPT PSYCHOL,CINCINNATI,OH 45221
关键词
D O I
10.1006/jecp.1997.2382
中图分类号
B844 [发展心理学(人类心理学)];
学科分类号
040202 ;
摘要
A modified dual-task approach was employed with 7- to 9-year-olds in an effort to determine whether one of the classic M-power measures, the digit placement task, is indeed capacity-limited. To this end, a computerized version of a three-item digit placement task was administered in addition to three other computerized tasks: a four-item digit placement task, simple reaction time (RT) to a tone presented alone, and reaction time to a tone occurring during the performance of another three-item digit placement task. Careful examination of the data revealed that several critical assumptions concerning the use of the dual-task procedure were successfully met. This permitted a test of the extent to which dual-task RTs were predictive of accuracy in the harder, four-item digit placement task. Not only was this relationship significant, but after partialling out other possible sources of variance, a significant correlation remained,indicating that the digit placement task is indeed capacity-limited. (C) 1997 Academic Press.
引用
收藏
页码:129 / 143
页数:15
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