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Irrelevant Stimuli and Action Control: Analyzing the Influence of Ignored Stimuli via the Distractor-Response Binding Paradigm
Published on: May 14, 2014
Stimulus-response bindings contribute to item switch costs in working memory
Markus Janczyk1, Wilfried Kunde
1Department of Psychology, Dortmund University of Technology, Emil-Figge-Strasse 50, 44227 Dortmund, Germany. janczyk@fk14.uni-dortmund.de
Psychological Research
|October 20, 2009
Summary
Switching responses significantly reduces item switch costs in counter updating tasks. This suggests stimulus-response bindings, not just working memory, drive these costs.
Area of Science:
- Cognitive Psychology
- Human Memory and Cognition
Background:
- Counter updating tasks involve tracking changing items, with faster responses for repeating items (item switch costs).
- The underlying mechanisms of item switch costs, particularly the role of stimulus-response bindings, remain incompletely understood.
Purpose of the Study:
- To investigate the contribution of stimulus-response (S-R) bindings to item switch costs in counter updating tasks.
- To differentiate the influence of S-R bindings from stimulus-stimulus (S-S) bindings and working memory processes.
Main Methods:
- Two experiments orthogonally manipulated item repetition/switch and manual response repetition/switch.
- Analysis focused on the magnitude of item switch costs under different S-R and S-S binding conditions.
Main Results:
- Item switch costs were substantially lower when item switches coincided with response switches compared to response repetitions.
- Stimulus-response bindings were identified as the primary driver of item switch costs, with a smaller contribution from stimulus-stimulus bindings.
Conclusions:
- Item switch costs in standard counter updating tasks are largely attributable to the unbinding of stimulus-response associations.
- These findings highlight the critical role of S-R bindings in cognitive control and task performance, extending beyond simple working memory updates.
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