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Right-handedness may have come first: Evidence from studies in human infants and nonhuman primates

Published online by Cambridge University Press:  02 October 2003

Daniela Corbetta
Daniela Corbetta*
Affiliation:
Departments of Health and Kinesiology and Psychological Sciences, Purdue University, West Lafayette, IN47907-2046www.sla.purdue.edu/academic/hkls/home.html
*
dcorbetta@sla.purdue.edu
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Abstract:

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Recent studies with human infants and nonhuman primates reveal that posture interacts with the expression and stability of handedness. Converging results demonstrate that quadrupedal locomotion hinders the expression of handedness, whereas bipedal posture enhances preferred hand use. From an evolutionary perspective, these findings suggest that right-handedness may have emerged first, following the adoption of bipedal locomotion, with speech emerging later.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 26 , Issue 2 , April 2003 , pp. 217 - 218
Copyright
Copyright © Cambridge University Press 2003