Tan U
Atatürk University, Medical Faculty, Department of Physiology, Erzurum, Turkey.
Int J Neurosci. 1992 Sep;66(1-2):25-34. doi: 10.3109/00207459208999786.
Relations of sex hormones to the degree of right-hand preference was studied in right-handed male and female adult subjects. Hand preference was assessed by the Edinburgh and Waterloo Handedness Questionnaires. Males consisted of weakly, moderately, and strongly right-handed subjects. Females comprised only moderately and strongly right-handed subjects. In females, only serum estradiol was found to be negatively linearly and significantly correlated with the degree of right-hand preference. In males, testosterone, as well as estradiol, showed a significant negative linear correlation with the degree of right-hand preference. Sex hormone binding globulin also showed a similar relation to hand preference in males. Thus, nearly all sex hormones caused a decrease in the degree of right-hand preference in males, whereas only estradiol had the same effect on hand preference in females. This would be the cause of stronger right-hand preference in females than males and vice versa.
在右利手成年男性和女性受试者中研究了性激素与右利手程度的关系。通过爱丁堡和滑铁卢利手问卷评估利手情况。男性包括弱右利手、中度右利手和强右利手受试者。女性仅包括中度右利手和强右利手受试者。在女性中，仅发现血清雌二醇与右利手程度呈显著负线性相关。在男性中，睾酮以及雌二醇与右利手程度呈显著负线性相关。性激素结合球蛋白在男性中与利手情况也呈现类似关系。因此，几乎所有性激素都会导致男性右利手程度降低，而只有雌二醇对女性利手情况有相同影响。这可能是女性比男性右利手倾向更强的原因，反之亦然。
