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Laterality. 2007 Jul;12(4):295-301.

Direction of hair whorl and handedness.

Author information

1
Department of Psychology, University of Wales, Swansea, UK. a.a.beaton@swansea.ac.uk

Abstract

We recorded the direction of hair whorl rotation in samples of male right- and non-right-handers. The data corroborate those of Klar (2003) in showing equal numbers of clockwise and anti-clockwise whorls in non-right-handers but an excess of clockwise whorls in right-handers. The findings support the view that in some proportion of the population direction of coiling arises as a consequence of random events occurring during early (pre-natal) development of the nervous system, while in the remainder of the population there is a systematic bias towards a clockwise direction of rotation. The association with handedness implies that the latter is in a very large measure biologically rather than culturally determined.

PMID:
17558812
DOI:
10.1080/13576500601112358
[Indexed for MEDLINE]
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