Abstract
Infants 11-12 weeks old were conditioned using social, visual, and auditory reinforcement to look longer at the “red” (or “green”) members of “red-green” pairs. No attempt was made to match intensities, which instead ranged over relative values from 200 to 1. Thus, wavelength, and not intensity differences, provided the basis for successful discrimination.
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Partially supported by a grant from the Wisconsin Alumni Research Foundation and by NICHD Grant HD 00117. This paper is sponsored by David A. Grant, who takes full editorial responsibility for it. Thanks to M. Kuskowski, D. Becker, G. S. Wasserman, R. M. Schaller, L. J. Harris, D. M. Massaro, W. Epstein, F. K. Graham, G. M. Dziadosz, M. Komisar, and the parents who volunteered their infants.
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Schaller, M.J. Chromatic vision in human infants: Conditioned operant fixation to “hues” of varying intensity. Bull. Psychon. Soc. 6, 39–42 (1975). https://doi.org/10.3758/BF03333138
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DOI: https://doi.org/10.3758/BF03333138