科学家通过对1000名胎儿进行的超声波扫描以及后续的追踪研究发现,10-12周左右的胎儿如果更喜欢吸吮自己的右拇指而不是左拇指,那么他出生以后将倾向于正常的右手习惯,反之就更可能是左撇子。科学家称,一个人在娘胎里10周大小时喜欢用的手将成为他一生喜欢用的手。 Using ultrasound scans of 1,000 fetuses and subsequent follow-up studies, scientists found that fetuses 10-12 weeks tend to prefer normal right-handed habits after birth if they prefer to suck their right thumb instead of the left thumb, whereas vice versa More likely to be left-handed. Scientists say the hand that a person likes to use when they are in their womb for 10 weeks will be his favorite hand.