Psychiatrist Dr Michael Lewis, author of Social Behaviour and Language Acquisition, conduct ed experiments that found mothers talked to, and looked at, baby girls more often than baby boys.

心理学家迈克.路易斯博士，《社会行为和语言获得》一书的作者进行的实验研究发现，和男宝宝相比，妈妈们和女宝宝谈话多，看女宝宝时间多。