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Study of laterality I: handedness, hand-clasping and arm-folding in a sample from Uruguay

Bernardo Bertoni; Renee Kolski

Departamento de Genetica, Facultad de Ciencias, Tristan Narvaja 1674, 11200 Montevideo, Uruguay. Send correspondence to B.B.

ABSTRACT

This study presents data for handedness, arm-folding and hand-clasping. The results for handedness show clear sex differences that reinforce Geschwind and Galaburda's theory (Archs. Neurol. 42: 428-459, 1985).
Hand-clasping shows a significant association to a 50:50 distribution, not observed for arm-folding, possibly due to a biological factor. The variables present no differences from values reported in the literature, and no significant relationship between the variables was observed.

Keywords: laterality; handedness; hand-clasping; arm-folding.

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