任务刺激的类型对任务切换的影响  

The Effect of Task Stimuli on Task Switching

作　　者：黄四林[1] 林崇德[2] 

机构地区：[1]中央财经大学社会发展学院心理学系,北京100081 [2]北京师范大学发展心理研究所,北京100875

出　　处：《心理科学》2010年第6期1334-1337,共4页Journal of Psychological Science

基　　金：国家自然科学基金资助项目"思维过程中的执行加工与自我监控:事件相关脑电位研究"(30670717)的资助

摘　　要：为揭示联结竞争对任务切换的影响机制,我们采用了任务线索范式比较双向刺激与单向刺激对任务切换的影响。通过对数字任务和字母任务反应时的分析发现:在当前任务的刺激类型不同时,单向刺激的反应时明显小于双向刺激的反应时;在当前任务的刺激类型相同时,反应时差异不显著。这表明,联结竞争是通过当前任务的刺激影响任务切换的。In order to uncover the mechanism of the effect of associative competition on task switching,the present study used the explicit task-cueing paradigm to investigate the effect of task stimuli on task switching. The correct RT of number tasks and letter tasks were analyzed. The results showed that when the types of stimulis of the current tasks were different,the reaction time between bivalent and univalent trials were significantly different and when the types of stimuli were the same,no significant difference was found. Current findings suggested that associative competition affected switch cost by the stimuli of the current tasks,not the previous tasks.

关 键 词：任务切换 切换代价 联结竞争 执行控制 

分 类 号：B842[哲学宗教—基础心理学]