Remembering Complex Objects in Visual Working Memory: Do Capacity Limits Restrict Objects or Features?

Visual working memory stores stimuli from our environment as representations that can be accessed by high-level control processes. This study addresses a longstanding debate in the literature about whether storage limits in visual working memory include a limit to the complexity of discrete items. W...

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Bibliographic Details
Published in:Journal of experimental psychology. Learning, memory, and cognition memory, and cognition, 2015-03, Vol.41 (2), p.325-347
Main Authors: Hardman, Kyle O., Cowan, Nelson
Format: Article
Language:English
Subjects:
Adult
Attention
Color Perception
Experimental psychology
Female
Form Perception
Human
Human Information Storage
Humans
Male
Memory
Memory, Short-Term
Models, Psychological
Neuropsychological Tests
Quantitative psychology
Retention
Short Term Memory
Visual Perception
Young Adult
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Summary:Visual working memory stores stimuli from our environment as representations that can be accessed by high-level control processes. This study addresses a longstanding debate in the literature about whether storage limits in visual working memory include a limit to the complexity of discrete items. We examined the issue with a number of change-detection experiments that used complex stimuli that possessed multiple features per stimulus item. We manipulated the number of relevant features of the stimulus objects in order to vary feature load. In all of our experiments, we found that increased feature load led to a reduction in change-detection accuracy. However, we found that feature load alone could not account for the results but that a consideration of the number of relevant objects was also required. This study supports capacity limits for both feature and object storage in visual working memory.
ISSN:0278-7393
1939-1285
DOI:10.1037/xlm0000031