Dan Ariely (Hebrew: דן אריאלי; born April 29, 1967) is an Israeli-American professor and author. He serves as a James B. Duke Professor of psychology and behavioral economics at Duke University. Ariely is the co-founder of several companies implementing insights from behavioral science. Ariely wrote an advice column called Ask Ariely in the WSJ from June 2012 until September 2022. Ariely is the author of the three New York Times best selling books Predictably Irrational, The Upside of Irrationality and The Honest Truth about Dishonesty. He co-produced the documentary (Dis)Honesty: The Truth About Lies.Since 2006, Ariely has faced multiple accusations of data fraud and academic misconduct, which have resulted in an academic suspension and a retracted paper. Source: Wikipedia (en)