Striking features of the studies of male and female homosexuality reported here are (a) the prominent role played by weak and/or hostile fathers in the etiology of homosexuality for both women and men; (b) the lack of a clear role of mothers in female homosexual etiology but the striking role of mothers in the etiology of male homosexuals; (c) the clearer etiological pattern that emerges for male homosexuals; (d) the alienation from mothers, fathers, and people''; and (e) extensive developmental and parent-child relations overlap between the homosexual and heterosexual sample of both sexes. (Author)