They report finding it difficult to assign ratings 2—4 for individuals with a large number of heterosexual and homosexual experiences. The most significant progress was made in the s, when bisexuals created supportive communities throughout the United States, expressing a clear challenge to heteronormativity.
These studies suggest that men and women are different in terms of sexual arousal patterns and that this is also reflected in how their genitals react to sexual stimuli of both genders or even to non-human stimuli. Determining the frequency of various sexual orientations in real-world populations is difficult and controversial.
Textbook of Medicine. Archived from the original on April 9, In fact, I just watched a program last week, I think. And the transgender population, which itself encompasses multiple groups, has needs and concerns that are distinct from those of lesbians, bisexual women and men, and gay men.