Multiple studies show that college-educated Americans are increasingly reluctant to marry those lacking a college degree. This bias is having a devastating impact on the dating market for college-educated women. Why? According to 2012 population estimates from the U.S. Census Bureau’s American Community Survey, there are 5.5 million college-educated women in the U.S. between the ages of 22 and 29 versus 4.1 million such men. That’s four women for every three men. Among college grads age 30 to 39, there are 7.4 million women versus 6.0 million men—five women for every four men.It is widely claimed that this mismatch drives society toward looser sexual mores:
Lopsided gender ratios don’t just make it statistically harder for college-educated women to find a match. They change behavior too. According to sociologists, economists and psychologists who have studied sex ratios throughout history, the culture is less likely to emphasize courtship and monogamy when women are in oversupply. Heterosexual men are more likely to play the field, and heterosexual women must compete for men’s attention.On the other hand there ought to be a shortage of women among the non-college educated set, and I haven't noticed that they have moved toward courtship and monogamy.