The dimensionality of perceptual category learning: a state-trace analysis
Date
2010
Authors
Newell, B.
Dunn, J.
Kalish, M.
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Journal article
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Memory and Cognition, 2010; 38(5):563-581
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Ben R. Newell, John C. Dunn and Michael Kalish
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Abstract
State-trace analysis was used to investigate the effect of concurrent working memory load on perceptual category learning. Initial reanalysis of Zeithamova and Maddox (2006, Experiment 1) revealed an apparently two-dimensional state-trace plot consistent with a dual-system interpretation of category learning. However, three modified replications of the original experiment found evidence of a single resource underlying the learning of both rule-based and information integration category structures. Follow-up analyses of the Zeithamova and Maddox data, restricted to only those participants who had learned the category task and performed the concurrent working memory task adequately, revealed a one-dimensional plot consistent with a single-resource interpretation and the results of the three new experiments. The results highlight the potential of state-trace analysis in furthering our understanding of the mechanisms underlying category learning.
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© 2010 The Psychonomic Society