A new study is adding evidence that people who were scarred by economic shocks during their teens can show the impact of the experience in their consumer behavior some 40 years later. Last year, business and economics professor Ulrike Malmendier co-authored a working paper analyzing decades of data about how high unemployment affected consumers in the future. She and her co-author found that people who had been unemployed longer later spent significantly less than the average consumer. They also bought more things on sale and used more coupons. The difference remained when other factors -- such as income, wealth, age, geography, and demographics -- had been taken into account.