They have by far the highest levels of suicidal ideation and they're the most likely to vote, a peculiar combination that explains much as far as Democratic politics.
Other than that they appear to be fairly run of the mill with the exception of a markedly lower likelihood of reported molestation by an adult, which I actually find hard to believe. I work in a creative field and have had to deal with a lot of alternative types including homosexual men. To say that as a group they're sex-obsessed to the point of compulsion and very attracted to younger males is an understatement.
Strange indeed. Remember though that the sample is children of one homosexual or bisexual parent regardless of which parent they live with. That is, by the way, the likely key to the apparent greater damage done by lesbianism than by male homosexuality: in the event of separation or divorcee a child is likely to stay with the mother, therefore she is the one having all the impact. In the rare case when a child is in custody of his gay father, the father would guard him closely, fearful of losing custody.