David L. Shapiro, PhD, is an Associate Professor of Psychology at the John Jay College of Criminal Justice in New York and also maintains a forensic psychology consulting practice in Baltimore, Maryland. He has published two other books on forensic assessment and has taught courses on both ethics and forensic psychology at Johns Hopkins University, University of Maryland, University of Baltimore, and Allegheny University. Dr. Shapiro has been a Diplomate in Forensic Psychology, American Board of Professional Psychology, since 1979.