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Related Experiment Videos

Task-set switching and long-term memory retrieval.

U Mayr1, R Kliegl

  • 1Department of Psychology, University of Potsdam, Germany. mayr@oregon.uoregon.edu

Journal of Experimental Psychology. Learning, Memory, and Cognition
|September 29, 2000
PubMed
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Task-set switching costs increase with higher long-term memory retrieval demands. This effect disappears with sufficient preparation time or explicit task cues, suggesting intentional retrieval influences switch costs.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Memory

Background:

  • Task-set switching involves cognitive control to change between tasks.
  • Advance reconfiguration is the intentional preparation for an upcoming task.
  • Long-term memory (LTM) retrieval plays a role in accessing task-specific information.

Purpose of the Study:

  • To investigate the relationship between intentional task-set switching and LTM retrieval demands.
  • To determine if LTM retrieval difficulty influences switch costs.
  • To examine the impact of preparation time and task cues on this relationship.

Main Methods:

  • Participants performed task-switching paradigms with varying retrieval demands (episodic vs. semantic).
  • Switch costs were measured under different conditions of preparation time and explicit task cues.

Related Experiment Videos

  • Task difficulty unrelated to retrieval demands was manipulated in a control experiment.

    • Main Results:

    • Switch costs were significantly higher for tasks requiring high LTM retrieval (episodic) compared to low retrieval (semantic).
    • Switch costs were unaffected by primary task difficulty unrelated to retrieval.
    • The retrieval-demand effect on switch costs was eliminated with adequate preparation or explicit task cues.

    Conclusions:

    • The intentional component of task-set switching, or advance reconfiguration, is closely linked to LTM retrieval demands.
    • Switch costs reflect the time required to retrieve task rules from LTM.
    • Cognitive control mechanisms for task switching are modulated by memory retrieval processes.