For this study, they analyzed data from a national study of 600 children born to single mothers and found a woman was 42 times more likely to marry the father of her son than she was to marry the father if the child was a girl.

• 两位学者分析了美国的600名未婚妈妈，发现其中生男孩嫁给孩子父亲的几率是生女孩的42倍。