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  • Title: The generalization of deferred imitation in enculturated chimpanzees (Pan troglodytes).
    Author: Bjorklund DF, Yunger JL, Bering JM, Ragan P.
    Journal: Anim Cogn; 2002 Mar; 5(1):49-58. PubMed ID: 11957402.
    Abstract:
    Deferred imitation of object-related actions and generalization of imitation to similar but not identical tasks was assessed in three human-reared (enculturated) chimpanzees, ranging in age from 5 to 9 years. Each ape displayed high levels of deferred imitation and only slightly lower levels of generalization of imitation. The youngest two chimpanzees were more apt to generalize the model's actions when they had displayed portions of the target behaviors at baseline, consistent with the idea that learning is more likely to occur when working within the "zone of proximal development." We argue that generalization of imitation is the best evidence to date of imitative learning in chimpanzees.
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