Influence-The Psychology of Persuasion was written by experimental and social psychologist Robert Cialdini. Cialdini wrote the book in part to arm ordinary people with an understanding of techniques employed by salesmen and other "compliance professionals" to get them to part with their money and/or time. Somewhat ironically, the book has become a manual for succeeding generations of these compliance professionals, teaching them to deploy the six "weapons of influence" to increase their sales, or charitable donations or volunteer recruitment or whatever their goal might be.Every Summarease business book summary is written by an MBA graduate of a Top Ten business school with over 20 years of business experience. Our Summary & Analysis titles include everything contained in the 10-Minute Book Summary versions, plus a much more detailed summary of the material included in the book, plus some observations of our own about the concepts.