Challenges Facing the Study of the Evolutionary Origins of Human Right-Handedness and Language

Challenges Facing the Study of the Evolutionary Origins of Human Right-Handedness and Language Int J Primatol https://doi.org/10.1007/s10764-018-0038-6 Challenges Facing the Study of the Evolutionary Origins of Human Right-Handedness and Language 1 1 1 Jacques Prieur & Alban Lemasson & Stéphanie Barbu & Catherine Blois-Heulin Received: 25 October 2017 /Accepted: 10 April 2018 Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract A growing consensus favors the predominance of the human left hemisphere in manipulation and language (speech and gestures). However, the mechanisms under- lying brain lateralization for noncommunication and communication functions are still unclear. Many studies emphasize the ambiguous nature of the relationship between the directions of brain lateralization for manipulation and for language. A comparative evolutionary approach investigating lateralization and communication mechanisms in our closest living relatives can improve our understanding of human hemispheric specialisation. We review theories concerning the evolutionary origins of human right-handedness and language and studies, highlighting the relevance of a comparative evolutionary approach. We discuss four methodological issues related to the study of handedness and communication: 1) categorisation of signaling based on criteria of intentionality; 2) use of a comprehensive multimodal and multifactorial approach; 3) investigation of laterality in intraspecific gestures; and 4) comparison of manual laterality between gestures and noncommunication actions. Deeper investigations of the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Primatology Springer Journals

Challenges Facing the Study of the Evolutionary Origins of Human Right-Handedness and Language

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Publisher
Springer US
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Life Sciences; Evolutionary Biology; Zoology; Animal Genetics and Genomics; Anthropology; Animal Ecology; Human Genetics
ISSN
0164-0291
eISSN
1573-8604
D.O.I.
10.1007/s10764-018-0038-6
Publisher site
See Article on Publisher Site

Abstract

Int J Primatol https://doi.org/10.1007/s10764-018-0038-6 Challenges Facing the Study of the Evolutionary Origins of Human Right-Handedness and Language 1 1 1 Jacques Prieur & Alban Lemasson & Stéphanie Barbu & Catherine Blois-Heulin Received: 25 October 2017 /Accepted: 10 April 2018 Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract A growing consensus favors the predominance of the human left hemisphere in manipulation and language (speech and gestures). However, the mechanisms under- lying brain lateralization for noncommunication and communication functions are still unclear. Many studies emphasize the ambiguous nature of the relationship between the directions of brain lateralization for manipulation and for language. A comparative evolutionary approach investigating lateralization and communication mechanisms in our closest living relatives can improve our understanding of human hemispheric specialisation. We review theories concerning the evolutionary origins of human right-handedness and language and studies, highlighting the relevance of a comparative evolutionary approach. We discuss four methodological issues related to the study of handedness and communication: 1) categorisation of signaling based on criteria of intentionality; 2) use of a comprehensive multimodal and multifactorial approach; 3) investigation of laterality in intraspecific gestures; and 4) comparison of manual laterality between gestures and noncommunication actions. Deeper investigations of the

Journal

International Journal of PrimatologySpringer Journals

Published: May 28, 2018

References

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