Cognition and perception in the object concept.

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Abstract
Infants [human] [45] divided into 3 matched groups, were measured on tests of object permanence, coordination of schemes and perceptual permanence at 3 and 4 mo. of age. Experimental groups were trained on 7 occasions between test dates. Group CS was trained in the coordination of the schemes of vision and prehension; group PP was trained in the perceptual permanence behavior of visual tracking; group X received no training, but was also tested at 5 mo. of age. No evidence was found of perceptual permanence by this age. The superior performance of group CS to other groups on object permanence tasks at 4 mo. supported the Piagetian claim that the object concept develops from the coordination of schemes.

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