Why are some people gay? That's the $64,000 question - at least in the scientific
community. Is it something genetically predetermined? Or does environment
have an impact on whether an individual turns out to be gay or lesbian? These
questions are beginning to be probed in ways that might finally be leading
to an answer, and the Sex Files has interviewed the foremost authorities on
the topic to uncover some of those scientific clues:
Dr. Devendra Singh, University
of Texas psychologist specializing in the evolutionary significance of
human physical attractiveness
Dr. Ken Zucker, head of the Child
and Adolescent Gender Identity Clinic at the University of Toronto's Clarke
Institute of Psychiatry
Dr. Ray Blanchard, head of the Clinical
Sexology program at the University of Toronto's Clarke
Institute of Psychiatry
Dr. Michael Bailey, professor of
psychology at Northwestern University
in Illinois and specialist in the genetics and environment of sexual orientation
Dr. Marc Breedlove, professor of
psychology* specialising in the sexual
differentiation of the brain.
* The original episode guide described Dr. Breedlove as a "professor of psychology at UCLA." Dr. Breedlove noted in 2008 "I am not, and have never been, a professor of psychology or of anything else at UCLA." Breedlove earned his Ph.D. at UCLA but taught at UC Berkeley before taking an appointment at Michigan State.