Foster children do equally well no matter the sexual orientation of their parents, a new study has found. While many of us might have guessed as much (or known from the evidence of our own lives), research like this continues (on and on and on) to provide necessary hard evidence to convince courts, politicians, and others that our families deserve to be treated with equal respect and legal recognition.

A research team of UCLA psychologists has conducted the first multi-year study of children placed with either opposite-sex or same-sex couples, and concluded, “On average, children in both household types showed significant gains in cognitive development and maintained similar levels of behavior problems over time.”

That was true, the researchers said—wait for it—”despite gay and lesbian parents raising children with higher levels of biological and environmental risks prior to adoptive placement.”

The results appeared in the October issue of the American Journal of Orthopsychiatry.