youtube.com/watch?v=b1u-7jW7opc
youtube.com/watch?v=EPffj8k7iLk&feature=related
youtube.com/watch?v=r7aUlWjPZVw
youtube.com/watch?v=jnxYQOyLvlY&feature=related
Parts taken from documentaries and national geographic
scientificamerican.com/article.cfm?id=study-says-brains-of-gay
pnas.org/content/105/27/9403
scientificamerican.com/article.cfm?id=having-older-brothers-inc
pnas.org/content/102/20/7356.abstract
pnas.org/content/103/27/10456.abstract
scientificamerican.com/article.cfm?id=bisexual-species
sciencemag.org/content/318/5858/1882.abstract
beheco.oxfordjournals.org/content/18/1/21.abstract
livescience.com/animals/080516-gay-animals.html
trans-health.com/displayarticle.php?aid=49
washingtonpost.com/wp-dyn/content/article/2005/05/22/AR2005052200785.html
apsa.org/Portals/1/docs/About%20APsaa/PositionPaperGayMarriage.pdf
newscientist.com/article/dn14146-gay-brains-structured-like-those-of-the-opposite-sex.html
newscientist.com/article/mg19826613.900-gay-brains-are-hardwired-at-birth.html
newscientist.com/search?doSearch=true&query=gay+sex
seedmagazine.com/content/article/the_gay_animal_kingdom/
-American Academy of Psychiatry on Same-Sex Marriage
-American Academy of Psychoanalysis
-American Academy of Pediatrics
-American Academy of Psychology
-American Academy of Child Psychiatry
Identical Twin studies demonstrate statistical likelihood of inborn (genetic and/or intrauterine) causes:
J.M. Bailey and R.C. Pillard, “A genetic study of male sexual orientation,” Archives of General Psychiatry, vol. 48:1089-1096, December 1991.
Bailey, J. M. and D. S. Benishay (1993), “Familial Aggregation of Female Sexual Orientation,” American Journal of Psychiatry 150(2): 272-277.
Simon LeVay, “A difference in hypothalamic structure between heterosexual and homosexual men,” Science, vol. 253:1034-1037, 1991.
W. Byne and B. Parsons, “Human sexual orientation,” Archives of General Psychiatry, vol. 50:228-239, March 1993.
fMRI studies demonstrate mirror neuron activity consistent with sexual preference:
Ponsetia, J., Bosinkia, H.A., Wolff, S., Peller, M., Jansen, O., Mehdorn, H.M., Büchel, & Siebner, H.R. (2006). A functional endophenotype for sexual orientation in humans. NeuroImage, 33, 825-833.
Mouras, H., Stoléru, S., Moulier, V., Pélégrini-Issac, M., Rouxel, R., Grandjean, B., Glutron, D., & Bittoun, J. (In Press). Activation of mirror-neuron system by erotic video clips predicts degree of induced erection: an fMRI study. NeuroImage.