Back in 1984, Dr. Robert B. Cialdini wrote a book called Influence: The Psychology of Persuasion. This posited six principles of persuasion and explained how to use them. Since then, it’s been widely hailed as a seminal book on marketing—something everyone in conversion optimization should read.
In 2016, he published another key book, called Pre-Suasion: A Revolutionary Way to Influence and Persuade. This added a seventh principle of persuasion to the list, and provided new inspiration to a whole new generation of marketers. Robert Cialdini’s influence on the field of marketing has been immeasurable.