Documents Project Washoe, in which two-way communication was established with a chimpanzee by means of sign language. Topics include: the range of Washoe's vocabulary, including signs for objects, proper names, modifiers, actions, and negatives; the development of sentence-like sequences of signs; and the contexts in which she signed, including requests, answers to questions, spontaneous comments and questions, and blind-testing conditions. Research methodology emphasizes integration of two-way communication into all aspects of chimpanzee daily life and rigorous testing procedures. Produced by Allen and Beatrice Gardner. (primates)
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