Department of Psychology, George Washington University, DC, USA.
J Exp Psychol Hum Percept Perform. 2011 Jun;37(3):903-13. doi: 10.1037/a0020984.
In the task switch paradigm, a switch of task is typically accompanied by a change in task cue. It has been proposed that the performance deficit usually observed when switching tasks is actually the result of changing cues. To test this possibility, we used a 2:2 cue-task mapping in which each cue indicated 2 different tasks. With advance presentation of a cue, the cost associated with changing cues disappeared, though a substantial task switch cost remained. Without advance cues, the relative contributions of task switch cost and cue change cost differed by transition frequencies. The results suggest that task execution contributes to switch cost independent of cue changes.
在任务转换范式中，任务的转换通常伴随着任务提示的变化。有人提出，当任务转换时，通常观察到的表现缺陷实际上是提示变化的结果。为了验证这种可能性，我们使用了 2:2 的提示-任务映射，其中每个提示表示 2 个不同的任务。通过提前呈现提示，与改变提示相关的成本消失了，尽管任务转换成本仍然很大。没有预先提示，任务转换成本和提示变化成本的相对贡献因转换频率而异。结果表明，任务执行对转换成本的贡献独立于提示变化。
