Task switching among two or four tasks: effects of a short-term variation of the number of candidate tasks
Task switching among two or four tasks: effects of a short-term variation of the number of candidate tasks
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DOI：
10.1007/s00426-013-0532-6
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发表时间：
2015-01-01
影响因子：
2.3
通讯作者：
Scheil, Juliane
中科院分区：
文献类型：
--
作者：
Kleinsorge, Thomas;Scheil, Juliane
在两个实验中，使用改进的任务提示范式，参与者在一组四个任务之间切换，在一些实验中，通过在任务线索之前的预先提示将任务减少到两个。预先提示暂时将选项限制在两个候选任务上，比起重复实验，切换实验对成绩的促进作用要大得多。这一观察结果被解释为通过在剩余的两个候选任务的表示之间实施对抗性限制而对全局任务表示进行短期重组的迹象。
In two experiments, using a modified task-cueing paradigm, participants switched among a set of four tasks that was on some trials reduced to two by a pre-cue preceding the task cue. A pre-cue temporarily restricting the options to two candidate tasks facilitated performance on switch trials to a much larger extent than on repeat trials. This observation is interpreted as an indication of a short-term restructuring of a global task representation by implementing antagonistic constraints among the representations of the two remaining candidate tasks.