Women receive 57 percent of bachelor's degrees and 60 percent of master's degrees, according to a new study on sex ratio.

Researchers at the University of Minnesota's Carlson School of Management and the University of Texas at San Antonio's College of Business conducted the study, and found that more women enrolled in universities means less are settling down to start a family, according to the news release.

Co-author and Carlson professor Vlad Griskevicius said that women who were "least likely to secure a mate" were more likely to start a career.

"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," explained Kristina Durante, co-author of the study and professor at UTSA.

As women become more educated, Durante said, they have less potential mates because their standards get higher.

"More than ever before," said Durante, "modern women are increasingly forced to make tough choices such as choosing briefcase over baby."