Pringle G F, Anderson S W, Jaffe J
J Commun Disord. 1985 Feb;18(1):59-62. doi: 10.1016/0021-9924(85)90014-0.
Twenty-nine male and 35 female right-handed children, aged 5 to 7, were assessed for the effect of familial sinistrality on a rapid color-naming task. Controlling for age and family size, a significant effect for degree of familial sinistrality was found in the girls but not in the boys. Among the girls, those with two or more left-handed or ambidextral relatives were the fastest on the color-naming task, those with no such relatives were the slowest, and those with only one left-handed or ambidextral relative scored between the other two groups in color-naming speed. It is suggested that a gene associated with left-handedness, when present in a right-hander, interacts with sex to produce the superior color-naming performance that we observed in girls but not in boys.
对29名5至7岁惯用右手的男孩和35名5至7岁惯用右手的女孩进行了评估，以研究家族性左利手对一项快速颜色命名任务的影响。在控制了年龄和家庭规模后，发现家族性左利手程度对女孩有显著影响，而对男孩没有显著影响。在女孩中，有两个或更多左利手或双手同利亲属的女孩在颜色命名任务中速度最快，没有此类亲属的女孩速度最慢，只有一个左利手或双手同利亲属的女孩在颜色命名速度上得分介于另外两组之间。研究表明，与左利手相关的基因，当存在于右利手个体中时，会与性别相互作用，从而产生我们在女孩而非男孩身上观察到的卓越颜色命名表现。
