Season of birth and parental age in right, mixed and left handers.
Bulgarian secondary school students (264 right handers, 246 mixed handers and 360 left handers) were investigated concerning subject's month of birth and concerning his mother's and father's age at his birth. Neither the month of birth nor any group of months turned out to be significantly associated with handedness. Similarly, no association between parents' age and handedness was found.
Karev
George B
GB
Section of Anthropology, IEMAM, Bulgarian Academy of Sciences, Bulgaria. gbkarev@yahoo.co.uk
D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D001723:Birth Rate; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D008423:Maternal Age; D010331:Paternal Age; D012621:Seasons