Mr "howtolive" reports:

On Friday I had the opportunity to hear author Dan Ariely speak. Dan is an MIT professor on tour to promote his new book, Predictably Irrational. … The example Dan gave was an experiment in which people had the ability to cheat and claim they deserved more money than they actually did. When the payoff was in cash, people only cheated a little, but when the payoff was in tokens which could be immediately redeemed for cash, people cheated a lot more.