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Common Cognitive Control Processes Underlying Performance in Task-Switching and Dual-Task Contexts.

Patricia Hirsch1, Sophie Nolden1, Mathieu Declerck2

  • 1Institute of Psychology, RWTH Aachen University, Aachen, Germany1.

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Summary
This summary is machine-generated.

This study reveals shared cognitive control processes in task-switching and dual-task performance. Specifically, working memory updating links mixing and dual-task costs, while cognitive control influences the psychological refractory period effect.

Keywords:
PRP effectcognitive controldual taskstask switching

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Area of Science:

  • Cognitive Psychology
  • Neuroscience

Background:

  • Cognitive control involves core components like working memory updating, inhibition, and shifting.
  • Understanding these components is crucial for explaining performance in complex cognitive tasks.

Purpose of the Study:

  • To analyze paradigm-specific performance costs in task-switching and dual-task paradigms.
  • To investigate the relationship between these costs and core cognitive control components.

Main Methods:

  • Participants completed comparable task-switching and dual-task paradigms.
  • Performance costs, including switch costs, mixing costs, psychological refractory period (PRP) effect, and dual-task costs, were measured.
  • Within-subjects comparisons were used to analyze correlations between different performance costs.

Main Results:

  • A significant correlation was found between mixing costs and dual-task costs, suggesting shared working memory updating processes.
  • Surprisingly, switch costs in task-switching correlated with the PRP effect in dual-tasking.
  • This suggests cognitive control, not just passive queuing, contributes to the PRP effect.

Conclusions:

  • Working memory updating is a shared process underlying both mixing costs and dual-task costs.
  • Cognitive control mechanisms play a role in the psychological refractory period effect.
  • The findings provide insights into the interconnectedness of cognitive control components across different task paradigms.