The foundational and wildly popular go-to resource for influence and persuasion?a renowned international bestseller, with over 5 million copies sold?now revised adding: new research, new insights, new examples, and online applications.In the new edition of this highly acclaimed bestseller, Robert Cialdini?New York Times bestselling author of Pre-Suasion and the seminal expert in the fields of influence and persuasion?explains the psychology of why people say yes and how to apply these insight...