The Psychology of Saving Money: How to Train Your Brain to Save It’s called the “$100 Bill Challenge.” Mac Gardner, a financial literacy advocate, shows elementary school students a $100 bill and asks them how they might use it. Nine students out… Previous Article Brand Loyalty Isn't Enough to Keep Customers — But Reviews and Rewards Are. Here's How. Next Article Strike Gold With These 2 Miner Stocks, Watch This 1