チンパンジーの手（指）差し Chimpanzees’ Hand-pointing
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チンパンジーは手全体を使って「指さし」ならぬ「手指し」をします。これは、他者に要求などを伝えるための行為です。手指しは、注意の対象を他者と共有する、たとえば、ヒトが「あれを見て！」言いながら指差しするような形で使われることはありません。
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Chimpanzees use their whole hand to “point”. This is an act of communicating requests to others. Hand pointing is not used to share a third reference with others, unlike human finger pointing, which is used when they say, for example, “Look at that!”
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A chimpanzee, Cleo, demands to end a task of combining nesting-cups after she failed to achieve the full seriation (taken at Primate Research Institute, Kyoto University)
A chimpanzee, Akira, begging for a food item by whole-hand pointing towards a human distributing foods as enrichment (taken at Primate Research Institute, Kyoto University)
協力：林美里 / Contributed by Hayashi Misato
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