It’s Tax Day! In these challenging economic times, and in the wake of massive bank bailouts and several of Obama’s cabinet nominees who took tax missteps, people may be fishing for an excuse not to pay all of their taxes. For a primer on what motivates us to cheat?and what keeps us honest?we are joined by behavioral economist Dan Ariely. He is the James B. Duke Professor of Behavioral Economics at Duke University and author of Predictably Irrational.