Dr. 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
. He's 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 articles in top-tier academic journals and consulted for a variety of Fortune 500 companies.