不稳定控制感剥夺损害工作记忆刷新功能

Unstable Control Deprivation Impairs Working Memory Updating

控制感剥夺会阻碍工作记忆中的转换功能,但对工作记忆中刷新功能的影响机制尚不清楚。据此,本文通过两个实验来探究控制感剥夺对工作记忆刷新功能的影响。结果发现,相较于基线水平,无论是通过行为无助任务(实验1)还是通过信息无助任务(实验2)操纵的稳定控制感剥夺均未阻碍随后的刷新任务;但在不稳定控制感剥夺的条件下(实验2),刷新任务的成绩显著降低。这表明,控制感剥夺对工作记忆刷新功能的影响依赖于对其操纵的稳定性。

Updating function is important for working memory.Some studies found control deprivation can impair the cognitive flexibility in working memory,while others believed that control deprivation can improve information processing capabilities.The important function of working memory updating is to process information.Therefore,the relationship between control deprivation and working memory updating is not clear.The present study intended to investigate whether and how updating function changes in a state of control deprivation.Two experiments were conducted to examine the influence of the stability of control deprivation on working memory updating.The result of experiment 1 indicated that no difference was observed between baseline group and deprivation group in terms of response time and accuracy.Meanwhile,there was no interaction effect between sense of control and difficulty of the updating task.Experiment 2 also demonstrated that there was no difference between baseline group and stable deprivation group.However,compared with baseline group,unstable deprivation showed a lower level of accuracy of the updating task,and the discrimination ability was lower than that of the stable deprivation group.In conclusion,the results of these two experiments proved that stable control deprivation did not hinder working memory updating.Interestingly,under the condition of deprivation of unstable control sense,the performance of updating task was significantly reduced.That is to say,the effect of control deprivation on working memory updating might depend on the stability of its manipulation.