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Task-order control in dual-tasks: Only marginal interactions between conflict at lower levels and higher processes of
Valentin Koob1, David Dignath2, Markus Janczyk3
1Research Methods and Cognitive Psychology, Department of Psychology, University Bremen, Hochschulring 18, D-28359, Bremen, Germany. koob@uni-bremen.de.
Attention, Perception & Psychophysics
|May 8, 2024
Summary
This study investigated task switching and conflict resolution in dual-task performance. Results suggest task order control and conflict resolution operate largely independently, with a bias towards repeating task orders.
Area of Science:
- Cognitive Psychology
- Human Performance
Background:
- Dual-task performance can lead to interference, particularly the backward crosstalk effect (BCE).
- BCE is modulated by trial compatibility, similar to congruency effects in conflict tasks.
- The interaction between low-level conflict resolution and higher-order task organization is not well understood.
Purpose of the Study:
- To examine if task conflict influences task order switching frequency.
- To determine if changing task order affects the efficiency of conflict resolution (BCE sequential modulation).
- To investigate the relationship between conflict resolution and task organization.
Main Methods:
- Four experiments were conducted to assess dual-task performance.
- Backward crosstalk effect (BCE) and its sequential modulation were measured.
- Task order switching frequency after compatible vs. incompatible trials was analyzed.
Main Results:
- Limited evidence suggests lower-level conflict marginally influences higher-order task organization.
- A bias towards repeating task order was observed across trials.
- Separating task selection and performance processes diminished sequential modulation of BCE.
Conclusions:
- Conflict resolution and task-order control appear largely independent in dual-task settings.
- Task order decisions may influence conflict resolution efficiency.
- Task-order sets play a role in guiding task selection and performance.
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