The problem with studies of same-sex parenting

Economist Doug Allen’s new study, published earlier this month, found lower high-school graduation rates among children of same-sex couples than those of opposite-sex couples and even single parents. (A brief and informative summary of the study is available here.) Meanwhile, the majority of, but not all, prior studies have concluded that there are “no differences” in outcomes for children raised by same-sex couples.

Obviously, both of these claims cannot be true. So what are the differences between the studies that cause them to find such different results?

http://www.thepublicdiscourse.com/2013/10/11115/?utm_source=RTA+Gordon+Same+Sex+Parenting&utm_campaign=winstorg&utm_medium=email