overconfidence

Economic theories have long helped investors improve their portfolios, but can they also help improve your marriage? A new book called Spousonomics: Using Economics to Master Love, Marriage and Dirty Dishes, argues the answer is yes.

Retirement mistake #1 is being overconfident in your investing skills. This is a big one, and it applies particularly to men. The traditional "hunters" believe they are much better investors than the data indicates is accurate. Want proof?