|
Nim Chimpsky (November 19, 1973 – March 10, 2000) was a chimpanzee who was the subject of an extended study of animal language acquisition (codenamed 6.001) at Columbia University, led by Herbert S. Terrace; the linguistic analysis was led by the psycholinguist Thomas Bever. Chimpsky was given his name as a pun on Noam Chomsky, a leading theorist on human language structure and generative grammar, who holds that humans are "wired" to develop language. Though usually called Nim Chimpsky, his full name was Neam Chimpsky, or Nim for short.〔 The validity of the study is disputed, as Terrace argued that all ape-language studies, including Project Nim, were based on misinformation from the chimps. R. Allen and Beatrix Gardner made a similar earlier study, called ''Project Washoe'', in which another chimpanzee was raised like a human child. Washoe was given affection and participated in everyday social activity with her adoptive family. Her ability to communicate was far more developed than Nim's. Washoe lived 24 hours a day with her human family from birth. Nim at 2 weeks old was raised by a family in a home environment by human surrogate parents,〔 as part of a study "conceived in the early 1970s as a challenge to Chomsky's thesis that only humans have language",〔 but whose "data, along with data from other studies, yielded no evidence of an ape's ability to use a grammar". Both chimps could use fragments of American Sign Language to make themselves understood. == Project Nim == Project Nim was an attempt to go further than Project Washoe. Terrace and his colleagues aimed to use more thorough experimental techniques, and the intellectual discipline of the experimental analysis of behavior, so that the linguistic abilities of the apes could be put on a more secure footing. Roger Fouts wrote: Attention was particularly focused on Nim's ability to make different responses to different sequences of signs and to emit different sequences in order to communicate different meanings. However, the results, according to Fouts, were not as impressive as had been reported from the Washoe project. Terrace, however, was skeptical of Project Washoe and, according to the critics, went to great lengths to discredit it. While Nim did learn 125 signs, Terrace concluded that he had not acquired anything the researchers were prepared to designate worthy of the name "language" (as defined by Noam Chomsky) although he had learned to repeat his trainers' signs in appropriate contexts.〔 Language is defined as a "doubly articulated" system, in which signs are formed for objects and states and then combined syntactically, in ways that determine how their meanings will be understood. For example, "man bites dog" and "dog bites man" use the same set of words but because of their ordering will be understood by speakers of English as denoting very different meanings. One of Terrace's colleagues, Laura-Ann Petitto, estimated that with more standard criteria, Nim's true vocabulary count was closer to 25 than 125. However, other students who cared for Nim longer than Petitto disagreed with her and with the way that Terrace conducted his experiment. Critics assert that Terrace used his analysis to destroy the movement of ape-language research. Terrace argued that none of the chimps were using language, because they could learn signs but could not form them syntactically as language, as described above. Terrace and his colleagues concluded that the chimpanzee did not show any meaningful sequential behavior that rivaled human grammar. Nim's use of language was strictly pragmatic, as a means of obtaining an outcome, unlike a human child's, which can serve to generate or express meanings, thoughts or ideas. There was nothing Nim could be taught that could not equally well be taught to a pigeon using the principles of operant conditioning. The researchers therefore questioned claims made on behalf of Washoe, and argued that the apparently impressive results may have amounted to nothing more than a "Clever Hans" effect, not to mention a relatively informal experimental approach. Critics of primate linguistic studies include Thomas Sebeok, American semiotician and investigator of nonhuman communication systems, who wrote: Sebeok also made pointed comparisons of Washoe with Clever Hans. Some evolutionary psychologists, in effect agreeing with Chomsky, argue that the apparent impossibility of teaching language to animals is indicative that the ability to use language is an innately human development. ''Project Nim'', a documentary film by James Marsh about the Nim study, explores the story (and the wealth of archival footage) to consider ethical issues, the emotional experiences of the trainers and the chimpanzee, and the deeper issues the experiment raised. This documentary (produced by BBC Films, Red Box Films, and Passion Films) opened the 2011 Sundance Film Festival. The film was released in theaters on July 8, 2011 by Roadside Attractions, and was released on DVD on 7 February 2012.〔(【引用サイトリンク】title=Project Nim )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nim Chimpsky」の詳細全文を読む スポンサード リンク
|