In my talk to the Bay Area Atheists, I discussed the evidence for our socio-sexual orientation. A concept I discuss in Sex and God. When I introduced the concept to the group and asked, "How many of your are familiar with this idea?" not one hand raised. This is NOT to be confused with Sexual Orientation. The research on this concept has been around for 20 years, yet no one in the sex education or even the sex positive community seems to know about it. Take a look at this brief article http://www.psychologytoday.com/blog/the-scientific-fundamentalist/2...
and then read Chapter 20 of Sex and God.