Compromise: In the stock market, when a short-term trade doesn’t go the right way, you need to be willing to take the loss. It has to be planned ahead, and you can’t let your emotions ruin ...

Gay marriage! Living out of wedlock!) On the coattails of this study, the Pew Research Center released a map on October 2 that analyzes the "marriage market" for the largest metro areas in the U.S.

You can't put a price tag on love, but dating and marriage is still a market, and economists have been thinking about how to play matchmaker more efficiently since 1962.

AUDIE CORNISH, HOST: The marriage market is a market. There just aren't any prices. And when you can't put a price tag on something like love, economists have found ways to match people, as Sarah ...