任务转换加工机制的研究述评

本文重点介绍了任务转换加工机制的三种主要假设：任务重建、任务重复优势和线索重复优势。任务重建假设认为转换加工是一种根据个体行为意图的自上而下的执行控制过程，而任务重复优势假设和线索重复优势假设均认为转换加工是一种由外部刺激启动的自下而上的自动控制过程。三者差异的焦点在于：转换加工过程中是否有执行控制参与。本文围绕这一争论进行了讨论和分析，并对相关领域进行了展望。

Review on the Mechanism of the Task Switching Process

Three main hypotheses of task switching mechanism, task-set reconfiguration, task-repetition benefits and cue-repetition benefits, are summarized. Task-set reconfiguration hypothesis considers task switch as a top-down executive control process based on the intention of individual behavior. On the contrary, task-repetition benefits hypothesis and cue-repetition benefits hypothesis both regard it as a bottom-up auto-matic control process initiated by the external stimulus. Therefore, the crucial difference among the three viewpoints is whether task switch involves executive control processes. The argument in the field is analyzed, and the relevant research is also suggested .