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Was a manual gesturing stage really necessary?
Published online by Cambridge University Press: 02 October 2003
Abstract:
Given the primate propensity to make noise, it is unclear why a manual gestural stage would have been necessary in the development of either language or right-handedness. Cortical asymmetries are present in australopithecines but become clearly human-like with the appearance of Homo about two million years ago, including Broca's cap regions. Stone tool-making is still our only empirical entry into past cognitive processes.
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- Copyright © Cambridge University Press 2003