ヒヨコにおける初期経験の効果 単色光下飼育の色相次元形成に及ぼす影響

樋口 義治

doi:10.4992/jjpsy.48.63

THE EFFECTS OF EARLY EXPERIENCE ON CHICKS

THE EFFECTS OF MONOCHROMATIC REARING ON THE FORMATION OF HUE DIMENSION

YOSHIHARA HIGUCHI

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JOURNAL FREE ACCESS

1977 Volume 48 Issue 2 Pages 63-69

DOI https://doi.org/10.4992/jjpsy.48.63

[Correction] The Japanese Journal of Psychology Vol.48 No.4 (1977) pp.258-258

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Published: July 20, 1977 Received: July 09, 1976 Available on J-STAGE: July 16, 2010 Accepted: - Advance online publication: - Revised: -
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Date of correction: July 16, 2010 Reason for correction: - Correction: ABSTRACT Details: Wrong : Three experiments were designed to determine the effects of early color experience on the formation of hue dimension in chicks. In each experiment, one group of chicks was raised in monochromatic light and a second group in white. After two weeks of rearing, they were trained in a successive discrimination task using a colored light (+) (480nm, 520nm, 580nm or 630nm) and white light (-). All subjects were then given generalization tests with regard to the wavelength in a Skinner box. In Exp. I, one group (mono) was raised in monochromatic red light (light source: neon lamp) and a second group (white) in white light, while a third group (1⋅2-w⋅mono) was moved into monochromatic red light after the first two days in white light. In generalization tests, monochromatically reared subjects showed flatter gradients than the other two groups. This tendency was also found in Exp. II (mono) in which the procedure was the same as that in Exp. I except for using monochromatic yellow light (light source: sodium vapor lamp, 589nm). In Exp. III, all subjects were reared in monochromatic light (sodium) before moving into white light. The number of days subjects spent in monochromatic light differed for the three groups: One day (1nw), two days (2nw), and six days (6nw), respectively. It was found that longer monochromatic rearing produced flatter gradients in subsequent tests. These results suggest that chicks have an innate basis for ordering stimuli of different wavelengths along the hue dimension. It was shown, however, that the longer the monochromatic rearing the subjects experience, the lower the ability they showed in subsequent strict discrimination.
Right : Three experiments were designed to determine the effects of early color experience on the formation of hue dimension in chicks. In each experiment, one group of chicks was raised in monochromatic light and a second group in white. After two weeks of rearing, they were trained in a colored light (+) vs. white light (-) successive discrimination task, and given generalization tests with regard to the wavelength in a Skinner box. In generalization tests, monochromatically reared subjects showed flatter gradients than the other groups, and longer monochromatic rearing produced flatter gradients. These results suggest that chicks have an innate basis for ordering stimuli of different wavelengths along the hue dimension.

Abstract

Three experiments were designed to determine the effects of early color experience on the formation of hue dimension in chicks. In each experiment, one group of chicks was raised in monochromatic light and a second group in white. After two weeks of rearing, they were trained in a colored light (+) vs. white light (-) successive discrimination task, and given generalization tests with regard to the wavelength in a Skinner box. In generalization tests, monochromatically reared subjects showed flatter gradients than the other groups, and longer monochromatic rearing produced flatter gradients. These results suggest that chicks have an innate basis for ordering stimuli of different wavelengths along the hue dimension.

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