Wendt Mike, Luna-Rodriguez Aquiles, Reisenauer Renate, Jacobsen Thomas, Dreisbach Gesine
Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg Hamburg, Germany.
Front Psychol. 2012 Aug 10;3:287. doi: 10.3389/fpsyg.2012.00287. eCollection 2012.
In task switching studies, pre-cuing of the upcoming task improves performance, indicating preparatory activation of the upcoming task-set, and/or inhibition of the previous task-set. To further investigate cue-based task preparation, the authors presented both valid and invalid task cues in a task switching experiment involving three tasks. Consistent with previous findings, a validity effect in terms of higher reaction times on invalidly compared to validly cued tasks was obtained. However, this validity effect was reduced following invalidly cued trials, suggesting dynamic adjustment in terms of decreased cue-based preparation after being misled. Performance was particularly impaired when the current task was the one that was invalidly cued on the preceding trial. This finding may reflect either particular reluctance to prepare or persisting inhibition of the erroneously prepared task-set from the pre-trial.
在任务切换研究中，对即将到来的任务进行预提示可提高表现，这表明即将到来的任务集被预先激活，和/或之前的任务集受到抑制。为了进一步研究基于提示的任务准备，作者在一个涉及三项任务的任务切换实验中呈现了有效和无效的任务提示。与之前的研究结果一致，在无效提示任务与有效提示任务相比反应时间更长这方面获得了有效性效应。然而，在无效提示试验后这种有效性效应减弱了，这表明在被误导后基于提示的准备减少方面存在动态调整。当当前任务是前一次试验中被无效提示的任务时，表现尤其受到损害。这一发现可能反映了要么特别不愿意进行准备，要么是来自前一次试验的错误准备的任务集持续受到抑制。
