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Updated: Oct 11, 2025

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
Published on: July 16, 2015
Trajectories of performance change indicate multiple dissociable links between working memory and fluid intelligence.
Aaron Cochrane1, C Shawn Green2
1Faculty of Psychology and Education Sciences, University of Geneva, 40 Boulevard du Pont-d'Arve, 1211, Genève, Switzerland. aaron.cochrane@unige.ch.
Working memory task performance is not stable over time. Its trajectory, including final performance and rate of change, predicts fluid intelligence, challenging existing psychological models.
Area of Science:
- Cognitive Psychology
- Neuroscience
Background:
- Psychological research often assumes stable performance on cognitive tasks.
- Understanding the dynamics of cognitive performance is crucial for accurate theoretical modeling.
Purpose of the Study:
- To investigate the temporal dynamics of working memory task performance.
- To determine if performance trajectories predict fluid intelligence.
Main Methods:
- Employed time-sensitive modeling to analyze working memory task performance data.
- Examined components of the performance trajectory, such as final performance and rate of change.
Main Results:
- Demonstrated that working memory task performance is not stable over time.
- Identified that specific trajectory components (final performance, rate of change) independently predict fluid intelligence.
Conclusions:
- The assumption of performance stability in psychological tasks is incorrect.
- Working memory performance dynamics offer novel insights into the relationship between working memory and fluid intelligence.
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