Test is widely prescribed for women that never feel like having sex, or women that can not lubricate or have an orgasm. Most women produce a small ammount of test, those that don't are known as "super-females" (thin voice, little muscle, no body hair). Those girls usually can't cum...
Can't point you to any scientific proof right now, but that's what my uncle (phd in human reproduction) always says...
LETS NOT CONFUSE HORNY WITH AGGRESSIVE, women have more estro thats why their soft and cuddly(LOL) now when you up her testosterone levels and down her estro levels she is not "more hornier" she is more aggressive, and women take advantage of this because where they wouldnt normally have the drive for having sex with all the workouts and household chorse they do (cause men are lazy-haha) they feel a bit more aggresive and now have that extra fire power to give their man want they want, SEX! and more so on Test then not being on Test like a man they want to get out their aggressiveness and more energy by having sex.(well thats one way) LOL