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Discrimination of chromatic from white light by two-month-old human infants

1978; Elsevier BV; Volume: 18; Issue: 1 Linguagem: Inglês

10.1016/0042-6989(78)90075-5

1878-5646

Davida Y. Teller, David R. Peeples, Michael Sekel,

Color perception and design

Two-month-old human infants were presented with bars of white and chromatic light embedded in a white screen. The bars were presented at each of a finely-spaced series of intensities, spanning the adult (heterochromatic) brightness match. The infants consistently detected most of the chromatic stimuli at all intensities, confirming earlier reports that they have some form of color vision. However, they failed to stare at brightness-matched yellow-green and mid-purple stimuli embedded in the white screen. Three interpretations of the data—dichromacy. trichromacy combined with a relative insensitivity to saturation differences, and postvisual motivational factors—are discussed.