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Mary Gani Psychology - 12 Comparative Psychology Test 4. a.) In 1933, Kellogg and Kellogg raised their child with chimpanzee Gua to attempt in teaching Gua spoken English. Although Gua could understand approximately 70 words, there was no speech production at all. Gardner and Gardner (1969) taught a female chimpanzee named Washoe. Instead of teaching her how to speak, they tried another attempt: teaching her American Sign Language (ASL). By utilizing positive reinforcement, Washoe was able to comprehend and use over 130 distinct signs by the age of 4. Like a young child, she generalized words, such as "more tickling" and "more brushing". She also showed spontaneous recombination, such as calling a swan a 'water bird', as well as teaching it to her children and other chimpanzees. Premack and Premack (1972) taught the female chimpanzee Sarah a language using plastic symbols in certain orders. She was able to understand link between plastic symbols...

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