If you are married before you start having kids, then the baby's sex is irrelevant. I would have liked to have had my first born child be a boy, but I wasn't going to divorce my wife because she gave birth to my daughter (whom I love more than life itself by the way). I don't mean to pass judgement, but to me this study is pointless, except to provide further proof that society must start to re-address the importance of marrying before having children.