Learning in domestic chicks after exposure to both discriminanda.

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Abstract
Bateson and Chantrey have suggested that the characteristics of complex objects may be learned by young animals by sequential exposure to parts or views of the object. The various component stimuli are said to be "classified together" as the animal learns to perceive its world. Consequently, domestic chicks given the opportunity to classify together color stimuli are subsequently less able to discriminate between them than are controls. Chicks were exposed either to colors or to shapes and subsequently trained to discriminate between them, and their discrimination performance was compared with that of nonexposed controls. In only 2 of 9 experiments, one of them a near replication of Bateson and Chantrey''s work, were their findings reproduced.

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