The influence of the range of angle variation in shape-constancy perception has been studied. Six- to nineteen-year-olds were presented rectangles in three sets differing in the range of angles to which the rectangles were rotated. Contrary to predictions based upon the invariance hypothesis, shape-constancy performance became more veridical, and response consistency increased, as the angles to which the forms were rotated were made more similar to each other. Consequently, it was concluded that observers at all ages studied used the intuitive mode of perceptual operation in the shape-constancy task.
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References
1.
BeckJ.GibsonJ. J., 1955, “The relation of apparent shape to apparent slant in the perception of objects”, Journal of Experimental Psychology, 50, 125–133
2.
EpsteinW.BontragerH.ParkJ., 1962, “The induction of non-veridical slant and the perception of shape”, Journal of Experimental Psychology, 63, 472–479
