(Our happy hour fact to amaze your drinking buddies with.)

Men who have traditional views toward sex roles in society earn on average $8,500 more a year than men who don't.

In a study that spanned 26 years, researchers asked over 12,000 men and women questions such as if they feel a woman's place is in the home, and if working mothers lead to more juvenile delinquency. They then tracked the participants' salaries over time and came to the $8,500 discrepancy after taking into account factors like education level, job complexity and hours worked.

The researchers also found that women with egalitarian views on sex roles made more than their traditional counterparts, but in this case the difference was only $1,500.

On a related note, we've always wondered if it's sexist to want a woman who does all the house work and is the breadwinner. If so, it sounds like we should be making more money.