The role of response selection for inhibition of task sets in task shifting.

Full Abstract

Response selection in task shifting was explored using a go/no-go methodology. The no-go signal occurred unpredictably with stimulus onset so that all trials required task preparation but only go trials required response selection. Experiment 1 showed that shift costs were absent after no-go trials, indicating that response processes are crucial for shift costs. In Experiment 2, backward inhibition was absent after no-go trials. Experiments 3 and 4 demonstrated that response selection, rather than execution, causes backward inhibition. All 4 experiments showed effects of preparation time in go trials, suggesting that advance preparation must have also occurred in no-go trials. The authors concluded that inhibition of irrelevant task sets arises only at response selection and that residual shift costs reflect such persisting inhibition.

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Author information

Author/s: Schuch, Stefanie (S); Koch, Iring (I);

Affiliation: Max Planck Institute for Psychological Research, Munich, Germany. schuch(-atsign-)psy.mpg.de

Journal and publication information

Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't

Journal: Journal of experimental psychology. Human perception and performance (J Exp Psychol Hum Percept Perform), published in United States. (Language: eng)

Reference: 2003-Feb; vol 29 (issue 1) : pp 92-105

Dates: Created 2003/04/02; Completed 2003/06/11; Revised 2006/11/15;

PMID: 12669750, status: MEDLINE (last retrieval date: 11/6/2008)

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