John R. “Jack” Schafer, Ph.D. is a professor at Western Illinois University in the Law Enforcement and Justice Administration (LEJA) Department. He is a retired FBI Special Agent. He served as behavioral analyst assigned to FBI's National Security Behavioral Analysis Program. He authored a book titled “Psychological Narrative Analysis: A Professional Method to Detect Deception in Written and Oral Communications.” He also co-authored a book titled “Advanced Interviewing Techniques: Proven strategies for Law Enforcement, Military, and Security Personnel.” He has published numerous articles on a wide range of topics including the psychopathology of hate, ethics in law enforcement, and detecting deception. Dr. Schafer owns his own consulting company and lectures and consults in the United States and abroad. Dr. Schafer is the author of The Like Switch: An Ex-FBI Agent's Guide to Influencing, Attracting, and Winning People Over.