This week we are honored to have as our special guest Dr. Robert Hare, Emeritus Professor of Psychology, University of British Columbia, President of Darkstone Research Group Ltd., author of several books, including Without Conscience: The Disturbing World of the Psychopaths Among Us, and developer of the Psychopathy Checklist-Revised (PCL-R). Dr. Hare discusses his development of the PCL-R, as well as some his concerns regarding its use, and the media’s portrayal of psychopathy research findings.