近期,《新科学家》杂志报道,英国科学家对胎儿的超声波扫描表明,人成为“右撇子”或“左撇子”的倾向,在胎儿发育早期就形成了。英国研究人员对1000个胎儿进行了超声波扫描。他们发现,这些胎儿在发育到15周的时候,有90%会吸吮右手大拇指,只有10%吸吮左手大拇指: 研究人员对其中75个胎儿进行了跟踪调查,他们中的60个偏好吸吮右手,15个偏好 Recently, “New Scientist” magazine reported that British scientists’ ultrasound scanning of the fetus showed that people’s tendency to become “right-handed” or “left-handed” was formed in the early stages of fetal development. British researchers performed ultrasound scans of 1,000 fetuses. They found that when these fetuses reach 15 weeks of development, 90% of them will suck the thumb of their right thumb and only 10% will suck the thumb of their left hand: The investigators tracked 75 of them and 60 of them prefer to suck the right hand. , 15 preferences