primatologists and paleoanthropologists conduct a comprehensive examination of the nonhuman primate data, discussing different views of what language is and suggesting how the primatological perspective can be used to fashion more rigorous theories of language origins and evolution. Together, the essays make a powerful case against the position that language is an innate biological system unique to humans and demonstrate that many aspects of language likely have a long evolutionary history-one that extends back beyond hominids to encompass our closest living relatives in the animal world.

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