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Updated: Aug 12, 2026
10:38
A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
Published on: July 16, 2015
Role of outcome conflict in dual-task interference
Summary
Dual-task interference occurs not just from resource competition but also from outcome conflict between tasks. Task-relatedness significantly impacts performance, suggesting substantial interactions between concurrent cognitive processes.
Area of Science:
- Cognitive Psychology
- Human Performance
Background:
- Traditional dual-task interference models focus on limited processing resources.
- An alternative explanation involves outcome conflict or 'crosstalk' between task processing.
Purpose of the Study:
- To investigate the role of outcome conflict in dual-task interference.
- To manipulate task relatedness to assess its impact on interference.
Main Methods:
- Experiment 1: Concurrent search for names (boys vs. cities) in separate channels.
- Experiment 2: Concurrent search for letters and digits, manipulating nontarget category relatedness.
Main Results:
- Task interference increased when nontargets were related to the other task's target category.
- Between-category search was less efficient in dual tasks compared to single tasks due to confusability.
- Congruence of target presence/absence across channels affected performance.
Conclusions:
- Outcome conflict significantly contributes to dual-task interference.
- Task interactions, particularly due to category confusability, are crucial.
- Further research is needed to identify all sources of outcome conflict.
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