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Resource scarcity and outcome conflict in time-sharing performance
P S Tsang1, T L Shaner, M A Vidulich
1Department of Psychology, Wright State University, Dayton, OH 45435, USA.
Perception & Psychophysics
|April 1, 1995
Summary
This study investigated dual-task interference, finding that performance tradeoffs align better with resource allocation models than outcome-conflict theories. Data did not support a switching strategy for managing interference.
Area of Science:
- Cognitive Psychology
- Human Performance
Background:
- Dual-task interference is a common phenomenon in cognitive psychology.
- Existing theories, such as resource-scarcity and outcome-conflict, offer different explanations for this interference.
Purpose of the Study:
- To evaluate the explanatory power of resource-scarcity versus outcome-conflict views on dual-task interference.
- To investigate the role of resource allocation and strategic interference avoidance.
Main Methods:
- A discrete-continuous task paradigm was employed for detailed analysis of time-shared performance.
- Dual-task priority was manipulated using a secondary task technique.
- Temporal predictability of discrete stimuli was varied to assess strategic avoidance.
Main Results:
- Moment-by-moment performance data did not provide evidence for a switching strategy.
- Observed interference patterns were more consistent with resource allocation than outcome-conflict.
Conclusions:
- The resource framework offers a more parsimonious explanation for complex dual-task interference patterns.
- Findings suggest that resource allocation, rather than outcome conflict, is a primary driver of performance tradeoffs in dual-tasking.