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Evolutionary sleight of hand: Then, they saw it; now we don't

Published online by Cambridge University Press:  12 August 2005

Peter F. MacNeilage  and
Barbara L. Davis
Peter F. MacNeilage*
Affiliation:
Department of Psychology, The University of Texas at Austin, A8000 Austin, TX78712
Barbara L. Davis*
Affiliation:
Department of Communication Sciences and Disorders, The University of Texas at Austin, A1100 Austin, TX78712
*
[email protected]
[email protected]
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Abstract:

Arbib's gestural-origins theory does not tell us why or how a subsequent switch to vocal language occurred, and shows no systematic concern with the signalling affordances or constraints of either medium. Our frame/content theory, in contrast, offers both a vocal origin in the invention of kinship terms in a baby-talk context and an explanation for the structure of the currently favored medium.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 28 , Issue 2 , April 2005 , pp. 137 - 138
Copyright
Copyright © Cambridge University Press 2005

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