Volume 1, Issue 1 p. 69-78
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Categorical perception

Robert L. Goldstone

Corresponding Author

Robert L. Goldstone

Department of Psychology and Brain Sciences, Indiana University, Bloomington, Indiana, 47405, USA

Department of Psychology and Brain Sciences, Indiana University, Bloomington, Indiana 47405, USASearch for more papers by this author
Andrew T. Hendrickson

Andrew T. Hendrickson

Department of Psychology and Brain Sciences, Indiana University, Bloomington, Indiana, 47405, USA

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First published: 23 December 2009
Citations: 128

Abstract

Categorical perception (CP) is the phenomenon by which the categories possessed by an observer influences the observers' perception. Experimentally, CP is revealed when an observer's ability to make perceptual discriminations between things is better when those things belong to different categories rather than the same category, controlling for the physical difference between the things. We consider several core questions related to CP: Is it caused by innate and/or learned categories, how early in the information processing stream do categories influence perception, and what is the relation between ongoing linguistic processing and CP? CP for both speech and visual entities are surveyed, as are computational and mathematical models of CP. CP is an important phenomenon in cognitive science because it represents an essential adaptation of perception to support categorizations that an organism needs to make. Sensory signals that could be linearly related to physical qualities are warped in a nonlinear manner, transforming analog inputs into quasi-digital, quasi-symbolic encodings. Copyright © 2009 John Wiley & Sons, Ltd.

This article is categorized under:

  • Psychology > Perception and Psychophysics