Some of the most important things to know about homosexuality is that it's neither a choice, curable nor preventable. There indeed seems to be an immutable dif

Some of the most important things to know about homosexuality is that it's neither a choice, curable nor preventable. There indeed seems to be an immutable difference between those who are primarily/exclusively attracted to the same or the opposite sex. But actual behavior, affected by culture and circumstances, does make all of this more difficult. Homosexuals are often perfectly able to "function" in heterosexual intercourse, and heterosexuals in homosexual intercourse. But the study didn't ask for that, they asked for the underlying preference. They may even have used physical measurements. Yes, there are studies where the participants are exposed to different stimuli and their arousal is measured physiologically.