Cue type affects preparatory influences on task inhibition

Kurzfassung/Abstract

The present study investigates the influence of preparation on inhibitory effects in cued task switching. In three experiments, we assessed n � 2 repetition costs as marker of inhibition of the just executed and now irrelevant task by comparing performance in task sequences such as ABA (i.e., n � 2 repetitions, with A, B and C standing for different tasks) to task sequences such as CBA (i.e., n � 2 switches). Specifically, we varied the cue�target interval (CTI) to examine cue-based preparation effects. In addition, we manipulated cue type (i.e., abstract, verbal, and direct cues) across the three experiments. We obtained significant reductions of n � 2 repetition costs with prolonged CTI when using abstract cues (i.e., coloured frames) and task names (i.e., digit), but not when using the task-specific stimulus�response mapping as cue for the upcoming task. These data suggest that cue-based preparation is not a uniform process but depends on the information provided by the cue.