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  • Title: Cue-independent task-specific representations in task switching: evidence from backward inhibition.
    Author: Altmann EM.
    Journal: J Exp Psychol Learn Mem Cogn; 2007 Sep; 33(5):892-9. PubMed ID: 17723067.
    Abstract:
    The compound-cue model of cognitive control in task switching explains switch cost in terms of a switch of task cues rather than of a switch of tasks. The present study asked whether the model generalizes to Lag 2 repetition cost (also known as backward inhibition), a related effect in which the switch from B to A in ABA task sequences is costlier than is the same switch in CBA task sequences. The model suggests that Lag 2 repetition cost should be absent from A'BA task sequences, in which A' and A are different cues for the same task. The cost is robust on such sequences, which suggests that cue-independent, task-specific representations are necessary for explaining task-switching performance and that the compound-cue model has limited explanatory power.
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