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The possibility that two forms of asymmetry underlie handedness is considered. Corballis has proposed that right-handedness developed when gesture encountered lateralized vocalization but may have been superimposed on a preexisting two-thirds dominance. Evidence is reviewed here which suggests that the baseline asymmetry is even more substantial than this, with possible implications for brain anatomy and genetic theories of handedness.

Original publication

DOI

10.1017/S0140525X03430069

Type

Journal article

Journal

Behavioral and Brain Sciences

Publication Date

01/04/2003

Volume

26

Pages

227 - 228