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Published on: August 29, 2018
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Multitasking strategies make the difference: Separating processing-code resources boosts multitasking efficiency when
Jovita Brüning1, Marie Mückstein1, Dietrich Manzey1
1Department of Psychology and Ergonomics.
Journal of Experimental Psychology. Human Perception and Performance
|October 22, 2020
Summary
Individuals’ multitasking strategies (blocking, switching, response grouping) remained consistent despite varying task demands. Switching and response grouping strategies improved efficiency with reduced response competition.
Area of Science:
- Cognitive Psychology
- Human Factors Engineering
- Human-Computer Interaction
Background:
- Individuals exhibit distinct preferred strategies for self-organized multitasking: blocking, switching, or response grouping.
- Understanding how task demands influence strategy choice and efficiency is crucial for optimizing performance.
Purpose of the Study:
- To investigate the impact of between-resource competition on multitasking strategy selection and efficiency.
- To determine if task characteristics, specifically stimulus and response modalities, moderate the effects of resource competition.
Main Methods:
- Two experiments were conducted using dual-task paradigms with varying stimulus (verbal/spatial) and response (manual/vocal) modalities.
- Participants performed self-organized tasks under different levels of between-resource competition.
- Individual strategy preferences (blocking, switching, response grouping) were assessed and their efficiency measured.
Main Results:
- Multitasking strategy choice was largely unaffected by the degree of between-resource competition.
- Efficiency gains were observed for individuals employing switching or response-grouping strategies when response competition was reduced (manual vs. vocal responses).
- Blocking strategy users showed no significant performance benefits or costs across different dual tasks.
Conclusions:
- Task resource competition has a limited effect on individuals' preferred multitasking strategy selection.
- Reducing response-related competition can enhance multitasking efficiency for switching and response-grouping individuals, potentially leading to dual-tasking benefits.
- Individual differences in strategy preference play a significant role in how task demands affect multitasking performance.
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