He is the author of the best-seller Economics for Dummies, which has now been translated into seven foreign languages, as well as the coauthor along with Campbell McConnell and Stanley Brue of the world’s best-selling college textbook, Economics: Principles, Problems, and Policies. An avid martial artist, Sean is the defending U.S. National Aikido Forms Champion and has coached four of his students to U.S. national aikido title. Sean’s research specialties are behavioral economics and behavioral finance, with a focus on irrational investors. A recurring commentator on NPR, FOX Business, and ABC News, Sean holds a B.A. in economics from the University of Southern California and a Ph.D. in economics from U.C. Berkeley, where he completed his dissertation under the supervision of 2001 Nobel Laureate George Akerlof.