The development of adaptive behavior in an infant gorilla.

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Abstract
The birth of the gorilla, Colo, in the Columbus Zoo on December 22, 1956, afforded a unique opportunity for studying the development from the earliest days of a gorilla whose birthdate was known. The findings in gross motor behavior have already been presented (Knobloch & Pasamanick, 1959) and indicate clear qualitative differences from humans from birth. There is a less clearly denned cephalocaudal progression, and development tends to occur in spurts. It progresses at a rate approximately twice as fast as in humans, and also more rapidly than in chimpanzees. Since it is our thesis, however, that motor behavior cannot be used as a criterion of intellectual functioning, it is necessary to look at adaptive behavior in order to answer the question regarding the primate hierarchy. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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