Separating cue encoding from target processing in the explicit task-cuing procedure: Are there "true" task switch effects?
Separating cue encoding from target processing in the explicit task-cuing procedure: Are there "true" task switch effects?
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DOI：
10.1037/0278-7393.33.3.484
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发表时间：
2007-05-01
影响因子：
2.6
通讯作者：
Schneider, Darryl W.
中科院分区：
文献类型：
--
作者：
Arrington, Catherine M.;Logan, Gordon D.;Schneider, Darryl W.
本研究通过六个实验将线索编码与目标加工分离，以确定任务转换效应是否能与线索编码效应分离，并确定线索编码产生的表征的性质。受试者被要求对提示做出反应，表明提示（实验1，3a和4a）或提示任务（实验2，3b和4b），然后在目标上执行提示任务。当提示反应指示哪项任务是提示时，提示编码成功地与目标加工分离，但当提示反应指示哪项提示时，则不能。任务切换效果时，这种分离是成功的，这表明有“真正的”任务切换效果独立的线索编码。成功分离所需的条件的分析表明，线索编码的结果在语义分类表示的任务进行，而不是口头或语音表示的个别线索。作者过去的任务切换性能建模的影响进行了讨论。
Six experiments were conducted to separate cue encoding from target processing in explicitly cued task switching to determine whether task switch effects could be separated from cue encoding effects and to determine the nature of the representations produced by cue encoding. Subjects were required to respond to the cue, indicating which cue was presented (Experiments 1, 3a, and 4a) or which task was cued (Experiments 2, 3b, and 4b), before performing the cued task on the target. Cue encoding was successfully separated from target processing when the cue response indicated which task was cued but not when it indicated which cue was presented. Task switch effects were found when this separation was successful, suggesting that there are "true" task switch effects independent of cue encoding. Analysis of the conditions required for successful separation suggested that cue encoding results in a semantic categorical representation of the task to be performed rather than verbal or phonological representations of individual cues. Implications for the authors' past modeling of task-switching performance are discussed.