中国科学院心理研究所机构知识库

对300名6个月至3岁的儿童进行了抓物的实验。发现1岁以内儿童的左、右手率在50％上下,随年龄增长,右手率逐渐增加:1—1(1/2)岁为69.4％,1(1/2)—2岁为71.3％,2—2(1/2)岁为76.9％,2(1/2)—3岁为81.5％。男、女存在差异,男孩右手率较女孩高。实验中出现双手抓物现象,但1岁半后此现象迅速减少。父母双方或一方为左利者,其孩子的左手率比那些父母为右利者高。此外,孩子抓物时对不同颜色物品和玩具则呈现选择性倾向。

An experiment of object grasping with right or left hand wasdesigned to see hand preference in 300 children from 6 months to3-years of age. The results showe ed that the frequency of using right orleft hand was around 50%.within 1 year of age.The percentage of right-handed children increased with age,reaching 69.4% at 1 to 1(1/2+) years of age71.3% at 1(1/2) to 2 years, 76.9% at. 2 to 2(1/2) years,and 81.5%. at, 2(1/2) to 3years The frequency of right-handedness of boy’s increased faster. thanthat of girl’s. The experiment showed that there were cases of objectgrasping with both hands, but the incidence decreased rapidly after 1(1/2)years of age. The proportion of left-handed children with two or oneleft-handed parents was higher than that with two right-handed parents.Children also showed a selective tendency to ward the color of objectsand toys.