Over 1.5 million copies sold! What factors cause someone to say yes? And which techniques most effectively use these factors to bring about such compliance? In his bestselling book, Robert Cialdini, former salesperson, fundraiser, and advertiser, and current professor of social psychology, examines the science and practice of persuasion and compliance. Praised for its enjoyable writing, practical suggestions, and scientifically documented content, prior editions have been widely read by business professionals, fundraisers, and those interested in psychology. The new edition includes:  twice as many first hand accounts of how the books principles apply to business and personal lives;  updated coverage of popular culture and new technology; and  more on how compliance principles work in many cultures. Heres what people are saying aboutINFLUENCE: Science and Practice:This marvelous book explains in clear, practical language the ways in which we become persuaded. It offers excellent insights for those who sell, but even more importantly for all of us who negotiate and buy. ROGER FISHER, Director, Harvard Negotiation Project, Co-author, Getting to Yes Bob Cialdini is the most brilliant student of influence and negotiation Ive encountered. If everything were on the line in a negotiation, I cant think of anyone Id rather have advising me.TOM PETERS, The Tom Peters GroupThis book is the de facto standard to learn the psychology of persuasion. If you dont read it, I hope you enjoy pounding your head against the wall and throwing away marketing dollars. GUY KAWASAKI, CEO, Garage.com His book should be in every sales and marketing persons briefcase and reread frequently.R. CRIAG WILSON, Sr. Vice President, Sales Manager, Northern TrustRobert B. Cialdini is a well known and influential speaker who gives frequent speeches on The Power of Ethical Influence to such organizations as IBM, the Mayo Clinic, and NATO. He is currently Regents Professor of Psychology at Arizona State University, where he has also been named Graduate Distinguished Research Professor. He is past president of the Society of Personality and Social Psychology. He attributes his longstanding interest in the intricacies of social influence to the fact that he was raised in an entirely Italian family, in a predominantly Polish neighborhood, in a historically German city (Milwaukee), in an otherwise rural state. (Pearson)