5string said:
Don't fool yourselves. Women with very low self esteem are the ones who have really slept around. Count on it. They define their self worth by the sexual attention they receive from men and will give it up readily.
I don't think this is really big news. Someone with low self-esteem will seek external validation through others. For women, its usually attention/sex from men.
But I don't think all women who give it up readily suffer from low self-esteem. Correlation does not necessarily imply causation. There are plenty of LSE chicks who will withhold sex as a weapon to obtain a relationship or other favors. Plus the women who suffer from body image issues which prevents them from being intimate with another person.
On the flip side....there are women who "give it up" simply because they think you're attractive, want to have sex with you, and don't want to play any games. I don't think this is necessarily reflective of low self-esteem but rather an individual's sexual preferences.
I think a better approach would be to ask what exactly motivates a particular woman's level of promiscuity (or lack of) rather than painting them in one broad brush.