Jonah Berger is a marketing professor at the Wharton School at the University of Pennsylvania and bestselling author of Contagious: Why Things Catch On and Invisible Influence: The Hidden Forces that Shape Behavior.

Dr. Berger has spent over 15 years studying how social influence works and how it drives products and ideas to catch on. He’s taught Wharton’s top ranked online course, published dozens of articles in top-tier academic journals, consulted for a variety of Fortune 500 companies, and popular outlets like the New York Times and Harvard Business Review often cover his work.