assessment of fixed-capacity models of visual working memory

assessment of fixed-capacity models of visual working memory

Visual working memory is often modeled as having a fixed number of slots. We test this model by assessing the receiver operating characteristics (ROC) of participants in a visual-working-memory change-detection task. ROC plots yielded straight lines with a slope of 1.0, a tell-tale characteristic of...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 2008-04, Vol.105 (16), p.5975-5979
Hauptverfasser: Rouder, Jeffrey N, Morey, Richard D, Cowan, Nelson, Zwilling, Christopher E, Morey, Candice C, Pratte, Michael S
Format: Artikel
Sprache:eng
Schlagworte:
Experimentation
Fall lines
False alarms
Humans
Ideal observer theory
Mathematical independent variables
Mathematical models
Memory
Memory, Short-Term
Modeling
Models, Psychological
Parametric models
Psychology
ROC Curve
Social Sciences
Statistical variance
Visual Perception
Visual task performance
Working memory
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Beschreibung
Zusammenfassung:Visual working memory is often modeled as having a fixed number of slots. We test this model by assessing the receiver operating characteristics (ROC) of participants in a visual-working-memory change-detection task. ROC plots yielded straight lines with a slope of 1.0, a tell-tale characteristic of all-or-none mnemonic representations. Formal model assessment yielded evidence highly consistent with a discrete fixed-capacity model of working memory for this task.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.0711295105