Here are just 3 of the many: Melbourne University in Australia: Australian Study of Child Health in Same-Sex Families, The Williams Institute - Predictors of Psychological Adjustment in Early Placed Adopted Children with Lesbian, Gay, and Heterosexual Parents, and Cambridge University Centre for Family Research - I've Got Two Dads and They Adopted Me. You can look up the methods used yourself.<quoted text>
Post just one of the studies with the methods used.
The bottom line is this: I can find a hundred reports to support gay marriage and you will never change your mind anyway because you don't want to believe them. It doesn't matter. Gay marriage is coming no matter what. The writing is on the wall. It's just a matter of time.