Abstract
A modification of the visual cliff is described that permits measurement of the differential visual depth threshold, the point of relative indifference in choice of the shallow side as compared to the deep side of the visual cliff as the deep side is brought closer to the glass. All illumination comes from below the glass to permit equal illumination on the two sides. An experiment with the hooded rat showed that its threshold for differential visual depth is with the deep side about 3-1/2 in. below the shallow side of the visual cliff.
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BOOHER, H. R. Differential visual depth perception threshold in the hooded rat. Unpublished M. A. thesis, George Washington University, 1967.
WALK, R. D. The study of visual depth and distance perception in animals. In D. S. Lehrman, R. A. Hinde, & E. Shaw (Eds.), Advances in the study of behavior. Vol. 1. New York: Academic Press, 1965, pp. 99–154.
WALK, R. D., & BOND, E. K. Deficit in depth perception of 90-day-old dark-reared rats. Psychon. Sci., 1968, 10, 383–384.
WALK, R. D., & GIBSON, E. J. A comparative and analytical study of visual depth perception. Psychol. Monogr., 1961, No. 75, 1–44, (Whole No. 519).
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1. Supported in part by a NIH Biomedical Sciences Support Grant to George Washington University. The study is a portion of an unpublished master’s thesis by the first author supervised by the second author. The master’s thesis (Booher, 1967) gives more details of the apparatus than are presented here.
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Booher, H.R., Walk, R.D. Apparatus for the differential visual depth threshold and its determination in the hooded rat. Psychon Sci 12, 187–188 (1968). https://doi.org/10.3758/BF03331262
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DOI: https://doi.org/10.3758/BF03331262