Cue-switch costs in task-switching: cue priming or control processes?
Cue-switch costs in task-switching: cue priming or control processes?
复制标题
DOI：
10.1007/s00426-009-0270-y
复制
发表时间：
2010-09-01
影响因子：
2.3
通讯作者：
Houghton, George
中科院分区：
文献类型：
--
作者：
Grange, James A.;Houghton, George
在显式提示任务切换范式中，每个任务有两个提示，可以将与切换提示相关的成本与切换任务的成本分开。虽然任务转换成本已经成为有争议的，线索转换成本是强大的。线索转换成本的过程，有助于在文献中规定：他们可以反映知觉启动的线索属性，或启动的控制过程，形成相关的工作记忆（WM）的任务要求的代表。在两个实验中，我们操纵线索透明度的注意转换设计，以测试对比假设的线索转换成本，并表明，这种成本出现从控制过程中建立相关的WM表示，而不是知觉启动的线索本身。当线索最大限度地透明时，线索转换成本就被消除了。我们讨论了最近的线索编码理论的结果，并提供了一个正式的定义，线索的透明度在切换设计和WM表示，指导任务的表现。
In the explicitly cued task-switching paradigm, two cues per task allow separation of costs associated with switching cues from costs of switching tasks. Whilst task-switch costs have become controversial, cue-switch costs are robust. The processes that contribute to cue-switch costs are under-specified in the literature: they could reflect perceptual priming of cue properties, or priming of control processes that form relevant working memory (WM) representations of task demands. Across two experiments we manipulated cue-transparency in an attention-switching design to test the contrasting hypotheses of cue-switch costs, and show that such costs emerge from control processes of establishing relevant WM representations, rather than perceptual priming of the cue itself. When the cues were maximally transparent, cue-switch costs were eradicated. We discuss the results in terms of recent theories of cue encoding, and provide a formal definition of cue-transparency in switching designs and its relation to WM representations that guide task performance.