Harvard Scientists Found Why Broke People Make Bad Decisions

Harvard scientists discovered why broke people make bad decisions - and it has nothing to do with intelligence. Researchers Sendhil Mullainathan (Harvard) and Eldar Shafir (Princeton) ran an experiment that changed how psychologists understand poverty. When people were asked to just think about a hypothetical bill, their cognitive test scores dropped by the equivalent of 13 IQ points - the same drop you'd see after a full night without sleep. In this video, we break down the real psychology behind bad money decisions: what researchers call "bandwidth," why financial stress hijacks your brain's ability to focus (a phenomenon called "tunneling"), and why this happens even to people who make six figures. You'll also learn simple, willpower-free ways to reduce the mental load that's quietly costing you money. This isn't about discipline. It's about understanding how your brain actually works under financial pressure - and what to do about it. TIMESTAMPS 00:00 Intro - Why Your Money Decisions Don't Add Up 00:51 The Harvard & Princeton Study 01:51 The 13 IQ Point Discovery 02:19 What "Bandwidth" Really Means 03:00 The Sugarcane Farmer Experiment 03:35 Why This Isn't Just About Money 04:53 The Hidden "Poverty Tax" 06:18 Why This Happens Even to High Earners 07:03 How It Wrecks Your Career Decisions 08:33 How to Actually Fix It 10:46 Final Thoughts If this helped you understand your own money habits a little differently, subscribe - every week I break down the psychology behind why we do what we do with money and work. #moneypsychology #behavioraleconomics #personalfinance