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Updated: May 17, 2025
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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
Published on: July 16, 2015
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Restoring a top-down control assumption: Salience effects in working memory are overcome with time.
Nicholas Gaspelin1, Nelson Cowan1
1Department of Psychological Sciences, University of Missouri.
Journal of Experimental Psychology. General
|May 15, 2025
Summary
Working memory capacity is limited, but item prioritization isn't always automatic. Flexible cognitive control, not just stimulus salience, influences what we remember, especially with sufficient encoding time.
Area of Science:
- Cognitive Psychology
- Neuroscience
Background:
- Working memory (WM) has limited capacity, leading to item competition.
- Recent studies suggest salient stimuli are automatically prioritized in visual WM.
Purpose of the Study:
- To assess if item salience automatically impacts WM or if WM deployment is flexible.
- To evaluate the claim of automatic prioritization of salient stimuli in visual WM.
Main Methods:
- Four experiments were conducted to test the automaticity of salience effects.
- The study examined recall performance under varying time constraints and display sizes.
Main Results:
- Previously observed relative salience effects on recall were not fully automatic.
- These salience effects were significantly reduced when participants had sufficient time to encode all task-relevant objects.
Conclusions:
- Working memory prioritization is more flexible than suggested by automatic salience accounts.
- Low-salience objects are difficult to find and encode, particularly in large displays with brief time limits, rather than salient objects being inflexibly prioritized.
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