Warren Throckmorton on BP News:
Mark Twain said once: "Rumors of my death have been greatly exaggerated." If environmental factors in sexual preference could talk, they might say the same thing. For sure, social or family factors in influencing sexual attractions have been written off by numerous scholars and media members. However, a new Danish study may prompt a fresh evaluation of the role of social factors in sexual orientation.
The study, published in the October 2006 issue of Archives of Sexual Behavior, authored by Danish epidemiologist Morten Frisch and statistician Anders Hviid, reports the analysis of data from more than two million men and women. It is the first study to examine an entire group of homosexuals for environmental factors in their decisions to "marry" homosexually. The research suggests a link between environmental factors such as geographic birthplace and family relationships and the probability of "marrying" a same-sex partner. The massive study also finds that the number of brothers and sisters affects the probability of marrying heterosexually. This finding questions a recent, widely touted Canadian study of birth order that found the number of older brothers increased the probably of homosexuality in men.