Well well, we always hear about those educated, independent women who don't need a man. But why don't they need a man? Here is what this article says.

http://www.sciencedaily.com/releases/2012/04/120417113708.htm

In another study on college campuses, the researchers led women to believe that there were either more men or less men on campus by having participants read one of two news article about the student population. When women read that there were fewer men than women on campus, they became more motivated to pursue ambitious careers rather than start a family. "A scarcity of men leads women to invest in their careers because they realize it will be difficult to settle down and start a family," said study coauthor Vlad Griskevicius, assistant professor of marketing at the University of Minnesota's Carlson School of Management. "In fact, the strongest effects were found for women who are least likely to secure a mate."

"Women who judged themselves to be less desirable to men -- those women who are not like Angelina Jolie -- were most likely to take the career path when men became scarce," added Durante.

In other words, the default setting is to look for a male partner who will be her provider. That is, unless you are an ugly chick. Then you become a strong, independent and educated women who doesn't need a man.

Exceptions prove the rule.