The Truth Detector

John R. "Jack" Schafer, PhD, is a psychologist, professor, intelligence consultant, and former FBI Special Agent. Dr. Schafer spent fifteen years conducting counter-intelligence and counterterrorism investigations, and seven years as a behavioral analyst for the FBI's National Security Division's Behavioral Analysis Program. He developed spy recruitment techniques, interviewed terrorists, and trained agents in the art of interrogation and persuasion. Dr. Schafer contributes online pieces for Psychology Today Magazine, has authored/coauthored six books, and has published numerous articles in professional and popular journals. He is a professor with the School of Law Enforcement and Criminal Justice at Western Illinois University.

Marvin Karlins received his PhD in psychology from Princeton University and is currently Professor of Management at the University of South Florida's College of Business Administration. Dr. Karlins consults internationally on issues of interpersonal effectiveness and has also authored twenty-four books, including two national bestsellers, What Every Body Is Saying and It's a Jungle in There. He resides in Riverview, Florida, with his wife, Edyth, and daughter, Amber.