Bloomberg Opinion columnist Barry Ritholtz interviews Dr. Robert Cialdini, professor emeritus of psychology and marketing at Arizona State University and an expert in the fields of persuasion, compliance and negotiation. His book "Influence: Science and Practice" has sold 3 million copies in more than 30 languages; his most recent work, "Pre-Suasion: A Revolutionary Way to Influence and Persuade," is a Wall Street Journal and a New York Times bestseller. Cialdini is also the CEO and president of Influence at Work, which provides training and certification.   See omnystudio.com/listener for privacy information.

Bloomberg Opinion columnist Barry Ritholtz interviews Barbara E. Kahn, author of 2018’s “The Shopping Revolution: How Successful Retailers Win Customers in an Era of Endless Disruption.” Kahn is a professor of marketing at the Wharton School at the University of Pennsylvania, and has served two terms as the director of the Jay H. Baker Retailing Center.  See omnystudio.com/listener for privacy information.