Contagious by Jonah Berger explores why some ideas, products, and behaviors spread while others don?t. Drawing on research in psychology and marketing, the book reveals six key principles?social currency, triggers, emotion, public visibility, practical value, and storytelling?that make content shareable. Packed with real-world examples and actionable insights, Contagious shows how to craft messages, campaigns, and products that capture attention, inspire action, and go viral.










