My intersexed girlfriend
The first raters judged targets' sexual orientations from unedited videos and from partial information extracted from the videos (e.g., video without sound for ratings of movement or sound without picture for ratings of speech).
The results: 87% of heterosexual targets and 75% of homosexual targets were accurately judged.
In humans, this sexually dimorphic region is called the INAH3.
The verbal fluency and memory of gay men exceeds that of other men, mirroring that of women.
Science, though, is late to linking sexuality with gender expression.
As a child, the Urning manifests an entirely unmistakable inclination toward girls' occupations, toward the company of girls, toward playing with girls' toys, especially dolls.
How terribly lamentable to such a child that it is not the custom for boys to play with dolls, that Santa Claus will not bring him any dolls, too, and that he is forbidden to play with his sister's dolls!
Karl Heinrich Ulrichs, the first openly gay man, argued in pamphlets starting in 1864 that " an Urning [his coinage for a gay male] is not a man, but is a type of hermaphrodite, a man-woman with the sexual orientation of a woman," a "third sex." Ulrichs used the Latin phrase anima muliebris virili corpore inclusa (the soul of a woman in the body of man) to sum up his theory: "Distinct from the feminine persuasion of our sexual drive, we Urnings have still another feminine trait in us which, so it seems to me, offers the most positive proof that nature developed the physical male germ in us, yet mentally, the feminine one." A century before Ulrichs, molly houses existed in 18th century England whose participants engaged in feminine behavior.