Abstract
On the basis of findings that categorical perception (CP) is possible in complex visual stimuli such as faces, the present study tested for CP on continua between unfamiliar face pairs. Results indicate that CP can be observed for unfamiliar faces, in both familiar (same-race) and unfamiliar (other-race) groups. In addition, significant CP effects were observed in inverted faces. Finally, half-continua were tested where midpoint stimuli became endpoints. This was done to ensure that stimulus artifacts did not account for the observed CP effects. Consistent with the perceptual rescaling associated with CP, half-continua showed a rescaled CP effect. We argue that these CP effects are based on the rapid acquisition of perceptual equivalence classes.
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—Accepted by previous editor, Myron L. Braunstein
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Levin, D.T., Beale, J.M. Categorical perception occurs in newly learned faces, other-race faces, and inverted faces. Perception & Psychophysics 62, 386–401 (2000). https://doi.org/10.3758/BF03205558
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DOI: https://doi.org/10.3758/BF03205558