Jonah Berger is a marketing professor at the Wharton School at the University of Pennsylvania and and a world-renowned expert on word of mouth, social influence, consumer behavior, and how products, ideas, and behaviors catch on. He has published dozens of articles in top‐tier academic journals, teaches Wharton’s highest rated online course, and popular accounts of his work often appear in places like The New York Times, Wall Street Journal, and Harvard Business Review. Berger is the internationally bestselling author of multiple books including Contagious: Why Things Catch On and Invisible Influence: The Hidden Forces that Shape Behavior.

From Fortune 500 companies to small start-ups, and multinationals to non-profits — including Apple, Google, GE, Coca‐Cola, Vanguard, 3M, Kaiser Permanente, and The Gates Foundation — he has helped drive new product adoption, sharpen effective messaging, and develop marketing strategy.

Ryan Berman is the founder of Courageous, a change consultancy that develops Courage Brands® and trains companies how to operationalize courage through Courage Bootcamp. Ryan has spent a career developing meaningful stories for household brands—like Caesars Entertainment, Major League Baseball, New Era, Subway, and UNICEF—and he believes that courage is the ultimate competitive advantage for any willing business, being or brand. He used the courage methodology detailed in Return on Courage : A Business Playbook for Courageous Change to launch his own Courage Brand called Sock Problems, a charitable sock company that socks different problems in the world.