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Savage-Rumbaugh, E. Sue; And Others – Science, 1978
Through the use of learned symbols, two chimpanzees accurately specified 11 foods by name to one another when the food item's identity was known by only one and requested specific food of one another by name. Requests resulted in cooperative and reciprocal symbolically mediated food exchange. (Author/MA)
Descriptors: Animal Behavior, Behavior Development, Biology, Cognitive Processes