Cioffi J, Kandel G L
Science. 1979 Jun 29;204(4400):1432-4. doi: 10.1126/science.451575.
Children identified nonsense shapes by touch better with their left hand and words better with their right hand. Bigrams were processed by boys as shapes and by girls as words, which suggests a sexual dimorphism of brain functioning for bigrams. A relative specialization of the hemisphere for stereognostic processing is also suggested, since the accuracy of identification by both hands was greater than chance for all three types of stimuli.
儿童用左手通过触摸识别无意义形状的能力更强，用右手识别单词的能力更强。男孩将双字母组作为形状来处理，女孩则将其作为单词来处理，这表明大脑在处理双字母组时存在功能上的性别差异。由于双手对所有三种类型刺激的识别准确率都高于随机水平，这也表明大脑半球在立体触觉加工方面存在相对专业化。
