Robert Cialdini is one of the best-known researchers on the topic of persuasion. He also has a book out by that same title

Robert Cialdini is one of the best-known researchers on the topic of persuasion. He also has a book out by that same title: Influence: The Psychology of Persuasion. Elaborate on some of the key findings/conclusions made by Cialdini’s research. In what ways has his research been criticized and What are some ways in which persuasion can be connected to social welfare/social change?