You have done something stupid with money at some point. Recently, probably. Maybe even this week.

Here is the good news. It was never really you. You see, scientists at Yale taught monkeys to use money, actual coins, actual trades, actual purchases, and the monkeys immediately started making the exact same questionable financial decisions you did. Panic selling. Refusing to cut their losses. Losing their minds with jealousy over what the monkey next door got instead. One of them even started stealing….

The Monkey in Your Wallet is the book that explains why, using genuine, peer-reviewed research into primate psychology to show that most of your worst money habits aren’t a personal failing. They’re ancient, evolved wiring, tested and proven in animals who’ve never seen a bank statement, a mortgage, or a credit card statement in their lives.