>>13814548>The homosexual group’s mean IQ score (111.2; SD=16.9; n=82) was lower (Pb0.001) than that of the nonhomosexual group (mean=122.3, S.D.=17.3, n=61). There were no differences in IQ scores between the sexes (81 MFs, 62 FMs). Mean scores for the different transsexual subgroups were 107.3 (S.D.=14.3) for the MF homosexuals (n=39), 121.7 (S.D.=17.2) for the MF nonhomosexuals (n=42), 114.8 (S.D.=18.4) for the FM homosexuals (n=43), and 123.7 (S.D.=17.8) for the FM nonhomosexuals (n =19).From "Transsexual subtypes: Clinical and theoretical significance," by Smith et al. (2005).
doi:10.1016/j.psychres.2005.01.008
My own personal experiences with dysphoric AGPs and AAPs have made that very clear, even before I found out that the subject had been formally studied.
To be clear, I don't think that regular AGPs and AAPs have an average IQ that's much higher than general population's. But it seems to me that higher intelligence puts autoheterosexuals in danger of developing GD.
That also explains why third world countries basically only have homosexual transsexuals, while East Asian, North American and European countries have so many transbians / trans gays.