Handedness and Eye-dominance: A Meta-analysis of Their Relationship
Title:
Handedness and Eye-dominance: A Meta-analysis of Their Relationship
Author:
Bourassa, D. C.
Appeared in:
Laterality
Paging:
Volume 1 (1996) nr. 1 pages 5-34
Year:
1996-03-01
Contents:
About one in ten people is left-handed and one in three is left-eyed. The extent of the association of handedness and eyedness is unclear, as some eyedness measures are potentially contaminated by measures of handedness. A meta-analysis of hand-eye concordance in 54,087 subjects from 54 populations, found that concordance was 2.69 greater in questionnaire rather than performance studies, 1.95 greater in studies using unimanual monocular performance measures, and 6.29 greater in studies using non-sighting measures of eye-dominance. In the remaining studies, which seemed to show no evidence of bias, the odds-ratio for hand-eye concordance was 2.53 ; in a population with 9.25% left-handedness and 36.53% left-eyedness, 34.43% of right-handers and 57.14% of left-handers are left-eyed. This pattern of hand-eye association poses problems for genetic models of cerebral lateralisation, which must invoke pleiotropic alleles at a single locus or epistatic interactions between multiple loci. There was no evidence that the incidence of eyedness, or the association between eyedness and handedness, differed between the sexes.
Journal description