刺激类型与预先信息对任务切换的影响  

THE EFFECT OF TYPE OF STIMULUS AND FOREKNOWLEDGE ON TASK SWITCHING

作　　者：黄四林[1] 

机构地区：[1]中央财经大学社会发展学院心理学系,北京100081

出　　处：《心理与行为研究》2011年第3期209-213,230,共6页Studies of Psychology and Behavior

基　　金：中央财经大学121人才工程青年博士发展基金(QBJZH201005);中央财经大学科研创新团队支持计划的资助

摘　　要：为揭示联结竞争与任务设置重构在切换加工过程中的关系,以切换代价为指标,研究了刺激类型与预先信息对任务切换的影响效应,结果发现:(1)无信息的切换代价显著高于部分信息和全部信息的切换代价,而后二者之间无显著差异;(2)单向刺激的切换代价显著高于双向刺激的切换代价;(3)预先信息和刺激类型对切换代价的影响无交互作用。这表明任务设置重构与联结竞争是两个具有相加效应的序列认知活动。In task switching, switch cost is the performance differences in task-switch and task-repetition trials. In order to uncover the relation of the two in task switching, the present study used the explicit task-cueing paradigm to investigate the effect of types of stimulus and foreknowledge on task switching. Switch cost was measured as the main index. The results showed that： （1） Switch cost was larger with no foreknowledge than with part and full foreknowledge, but not difference significantly between the later two. （2） Switch cost with univalent stimulus was larger than with bivalent stimulus. （3） The interaction between type of stimulus and foreknowledge was not found. The findings suggested that the task-set reconfiguration and the associative competition were serial process severally and additive effect on switch cost.

关 键 词：任务切换 切换代价 执行控制 

分 类 号：B842.1[哲学宗教—基础心理学]