ISSN 0439-755X
CN 11-1911/B

›› 2007, Vol. 39 ›› Issue (06): 985-993.

### The Endogenous Preparation and Exogenous Adjustment of Switching Process in Working Memory

Guo Chunyan,Sun Tianyi

1. Department of Psychology, Capital Normal University, Beijing 100037, China
• Received:2006-05-24 Revised:1900-01-01 Online:2007-11-30 Published:2007-11-30
• Contact: Guo Chunyan

Abstract: Switching process is an important aspect of executive control. The process is presented as controlling switching course between two tasks which compete the same cognitive resources in working memory. The course of switching involves both endogenous preparation without an external stimulus and exogenous adjustment in response to the external stimulus. But what is the general way to deal with information is not clear.
The results suggested: 1.The task repetition and task switch were different courses. The time of task repetition effect was significantly longer than that of task switch effect, under the condition of foreknowledge or no-foreknowledge; 2. The hypothesis was confirmed that endogenous preparation and exogenous adjustment were two different courses of switch process; 3. Under the conditions of foreknowledge task repetition, foreknowledge task switch and no-foreknowledge, the influence of task two on task one was different. There was a prospective memory effect in this course.
Comparing the results of experiments 1 and 2, we conclude that the general way of the switching process in dealing with information as an important aspect of executive control is that under the condition of foreknowledge, switching process beginning with endogenous preparation after task one is clear, and is accomplished via exogenous adjustment after task two is presented. In the case of no-foreknowledge, however, switching process can be accomplished only by relying on the exogenous adjustment

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