“…Until recently, the prevailing scientific position has been that sexual orientation is an early-determined, stable trait that is highly resistant to change (e.g., Bell, Weinberg, & Hammersmith, 1981; research. These include (1) conversion therapy outcome studies which, with very few exceptions (e.g., Spitzer, 2003), document very low success rates in treatment efforts to alter sexual orientation (e.g., Haldeman, 1991Haldeman, , 1994; (2) research suggesting a developmental continuity between gender-atypical behavior in childhood and later adult homosexuality (Bailey & Zucker, 1995;Bell et al, 1981;Green, 1974Green, , 1987; and (3) studies of the biological etiology of sexual orientation, an underlying assumption of which is that evidence of such a contribution to etiology implies a probabilistic relationship between the identified biological condition and sexual orientation outcome (e.g., Dörner, 1968;Dörner & Hintz, 1968;Meyer-Bahlburg et al, 1995;Money, Schwartz, & Lewis, 1984;Mustanski, Chivers, & Bailey, 2002;Ricketts, 1984).…”