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Article
August 1974

Orientation and Form

Arch Ophthalmol. 1974;92(2):182. doi:10.1001/archopht.1974.01010010188030

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Abstract

The author, a PhD in psychology, is associated with the Institute for Cognitive Studies, Rutgers University, and has contributed numerous papers in the fields of perception, learning, and memory. A previous comprehensive book, The Nature of Perceptual Adaptation, which was published in 1966 and which was very ably reviewed by Richard Held in the Journal of the Optical Society of America in March 1969.

This new book discusses, in considerable detail, the everyday phenomena of objects appearing different when seen in a tilted or inverted position, and, perhaps just as commonplace, the appearance (perception) of the same object despite alterations of the retinal image. We "see" our dinner plate as being round even when its retinal image changes from circular to elliptical.

Professor Rock proposes a new theory of form perception that differs from the currently favored views in psychology. The Gestalt psychologists claim that the essential information for the

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