【摘要】 采用记忆更新任务,实验1要求被试分别更新3个和4个记忆项目,并设置不转换、控制转换和抑制转换条件,考察记忆集对注意焦点转换及其返回抑制的影响;实验2操纵两次更新同一记忆项目之间对其它记忆项目更新的次数(2次、3次及3次以上),在实验1基础上,考察返回抑制中项目抑制状态的消退过程。结论:随记忆集增加,转换代价增大,而返回抑制效应消失;当注意焦点对其它记忆项目更新2次时,之前被抑制项目的抑制状态可完全消退。更多还原

【Abstract】 Two experiments with memory updating tasks were included in the present study. In experiment 1,participants were asked to keep 3 and 4 running counts,respectively. The last reactions of runs of non switching conditions,control switching conditions and inhibition switching conditions were compared to investigate effects of memory set sizes on processes of switching of focus of attention and backward inhibition within it. In experiment 2,focus of attention could refocus one count after updating two other counts twice,three times and more than three times,and the last reactions of three runs were compared to examine the course for the inhibited items to decay. The main conclusions included: switching cost was larger when participants were required to update 4 counts,and backward inhibition disappeared; the previously inhibited items could fully decay after focus of attention updating twice of other items.更多还原