Categorical and coordinate relations in faces, or Fechner's law and face space instead?
Date
2005
Authors
McKone, Elinor
Edwards, Mark
Aitkin, Alexander
Journal Title
Journal ISSN
Volume Title
Publisher
American Psychological Association
Abstract
E. E. Cooper and T. J. Wojan (2000) applied the categorical-coordinate relations distinction to faces on the basis of a finding that two-eyes-up versus one-eye-up distortions had opposite effects in between-class (face normality) and within-class (face identity) tasks. However, Cooper and Wojan failed to match amount of metric change between their 2 deviation types and tested only 1 deviation level. In the present study, eyeheight was shifted (e.g., both eyes up or both eyes down vs. one eye up and one eye down) parametrically (11 levels) and normality and identity ratings obtained. There was no evidence of categorical changes in perception where these would have been predicted by Cooper and Wojan's theory. In all cases, the relationship between physical and perceived distortion followed Fechner's law. Differences across distortion types in Fechner threshold (the minimum deviation altering perceived normality or identity) are explained in terms of the variability associated with different dimensions in face space.
Description
Keywords
Keywords: article; depth perception; face; human; recognition; Face; Humans; Recognition (Psychology); Space Perception Categorical-coordinate relations; Face recognition; Face space; Facial dimensions; Fechner's law
Citation
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Source
Journal of Experimental Psychology: Learning, Memory, and Cognition
Type
Journal article