Moreover, the study, according to a statement of the Human Rights Campaign, Freedom to Marry, Family Equality Council and the Gay and Lesbian Alliance Against Defamation, was "written by rightwing author Mark Regnerus of the Department of Sociology and Population Center at the University of Texas and funded in large part by the antigay Witherspoon Institute."
We can easily understand that this study is not a study but an anti-gay propaganda. It actually "makes a number of claims about negative outcomes for children raised by gay and lesbian parents. However, for the most part, the paper doesn't even look at same-sex couples raising a child together in a longterm committed relationship."
It also seems indeed that several of the children of the study were not raised by gay or lesbian parents committed in a relationship whereas children in heterosexual households had two married parents.
So the American Psychological Association indicated on its website that "on the basis of a remarkably consistent body of research on lesbian and gay parents and their children, the American Psychological Association and other health, professional, and scientific organizations have concluded that there is no scientific evidence that parenting effectiveness is related to parental sexual orientation."
"That is, lesbian and gay parents are as likely as heterosexual parents to provide supportive and healthy environments for their children. This body of research has shown that the adjustment, development, and psychological well-being of children are unrelated to parental sexual orientation and that the children of lesbian and gay parents are as likely as those of heterosexual parents to flourish."