Summary of Contagious

Contagious: Why Things Catch On is a book by Jonah Berger that explores why certain products, ideas, and behaviors become popular and contagious. Berger explains the science behind why certain things trend and provides six key principles for making ideas and products more contagious: Social Currency, Triggers, Emotion, Public, Practical Value, and Stories. Berger's research reveals that when we share something, we are not only helping others, but also helping ourselves, as we seek to increase our social standing and build relationships. He also shows how marketers can use the principles to make their products, services, and ideas more visible and successful.