''Evidence indicates that, aside from sexual partner preference, the mating psychology of homosexual men is sex-typical whereas that of homosexual women tends to be more sex-atypical.''
From ''Mate Retention Behavior of Men and Women in Heterosexual and Homosexual Relationships'' by Doug P. VanderLaan and Paul L. Vasey. (Archives of Sexual Behavior: August 2008)
''The results showed that, overall, transsexuals tended to place more importance on partner’s physical attractiveness and reported higher scores on Blanchard’s Core Autogynephilia Scale [sexual arousal at the idea of being a female] than biological females.''
From ''Sexuality of Male-to-Female Transsexuals'' by Jaimie F. Veale, Dave E. Clarke and Terri C. Lomax. (Archives of Sexual Behavior: August 2008)
''On three laterality indices, heterosexual men displayed a significantly greater right-ear advantage compared to heterosexual women only. Homosexual women did not differ significantly from heterosexual men or from heterosexual women. Post-hoc comparisons (with a statistical correction) for each ear separately showed that heterosexual men displayed significantly greater right-ear scores compared to heterosexual women only. These data suggest that lesbian women are somewhat masculinized in their functional cerebral asymmetry.''
From "A Comparative Analysis of Functional Cerebral Asymmetry in Lesbian Women, Heterosexual Women, and Heterosexual Men" by Qazi Rahman, Anna Cockburn and Ernest Govier. (Archives of Sexual Behavior: August 2008)
''In the [Priming Task], participants classified words as either sexually attractive or unattractive. Each word was preceded by a “prime” that was a picture of either a male or a female. The [Implicit Association Task] consisted of classifying these same words as sexually attractive or unattractive, and classifying the pictures as either male or female.... It was concluded that these implicit measures can provide a valuable tool for research into sexual orientation and erotic preference that can complement existing measures, such as self-report questionnaires and physiological changes in sexual arousal in response to erotic stimuli.''
From ''Implicit and Explicit Measurements of Sexual Preference in Gay and Heterosexual Men: A Comparison of Priming Techniques and the Implicit Association Task'' by Robert J. Snowden, Jan Wichter and Nicola S. Gray. (Archives of Sexual Behavior: August 2008)