The title here is a bit misleading. The book is not just about psychopaths but the extreme edges of the psychology industry. But like all Jon Ronson books it is as much about the author/investigative journalist's journey in researching his subject as it is about the subject itself. Ronson is an obsessive and neurotic writer whose specialty is hanging out with and writing about people most of us are happy to never meet. Its fun and a bit disturbing following him around. In the end, you won't think about psychological disorders the same way again.