Contagious: How to Build Word of Mouth in the Digital Age

“If you are seeking a bigger impact, especially with a smaller budget, you need this book. Contagious will show you how to make your product spread like crazy.” — Chip Heath, co-author of Made to Stick and Decisive

“Jonah Berger knows more about what makes information ‘go viral’ than anyone in the world.” — Daniel Gilbert, Professor of Psychology, Harvard University and author of Stumbling on Happiness

“Jonah Berger is the rare sort who has studied the facts, parsed it from the fiction—and performed groundbreaking experiments that have changed the way the experts think. If there’s one book you’re going to read this year on how ideas spread, it’s this one.” — Dave Balter, CEO of BzzAgent and Co-founder of the Word of Mouth Marketing Association

“A provocative shift in focus from the technology of online transmission to the human element and a bold claim to explain ‘how word of mouth and social influence work . . . [to] make any product or idea contagious.” ― Kirkus Reviews

“Contagious contains arresting — and counterintuitive — facts and insights. . . . Most interesting of all are the examples Berger cites of successful and unsuccessful marketing campaigns.” — Glenn C. Altschuler ― The Boston Globe

“An infectious treatise on viral marketing. . . . Berger writes in a sprightly, charming style that deftly delineates the intersection of cognitive psychology and social behavior with an eye toward helping businesspeople and others spread their messages. The result is a useful and entertaining primer that diagnoses countless baffling pop culture epidemics.” ― Publishers Weekly

“The book is just plain interesting. Berger’s cases are not only topical and relevant, but his principles seem practical and are easily understood. . . . I have a strong feeling that this book will catch on.” — Ben Frederick ― The Christian Science Monitor

“Think of it as the practical companion to Malcolm Gladwell’s The Tipping Point.” — Tasha Eichenseher ― Discover

“An exegesis on how ideas really ‘go viral’ (hint: the internet gets too much credit) by a marketing wunderkind.” ― Details