Harold V. Hall is the Director of the Pacific Institute for the Study of Conflict and Aggression located in Kamuela, Hawaii. He has served as a consultant for a wide variety of criminal and civil justice system agencies, including the Federal Bureau of Investigation, the National Bureau of Prisons, the U.S. Secret Service, and district and circuit courts at both the state and federal levels. Dr. Hall is a diplomate in both forensic psychology and clinical psychology from the American Board of Professional Psychology and is a fellow of the American Psychological Association. He was elected Distinguished Practitioner, National Academy of Practice in Psychology. He has investigated and trained others in deception analysis since the late 1960s in Hawaii, on the continental United States, and in Europe Joseph G. Poirier is the Clinical Director of the Child and Adolescent Forensic Evaluation Service (CAFES), Health and Human Services, Montgomery County Government, Rockville, Maryland. For 30 years, he has also been the codirector of the Circuit Court Mental Health Service, Prince Georges County, Maryland. He has testified as an expert witness in federal court and in district and circuit courts in a number of states. Dr. Poirier maintains a clinical-forensic private practice in Silver Spring, Maryland. Dr. Poirier is triple board certified in forensic psychology, clinical psychology, and family psychology by the American Board of Professional Psychology. He is also a fellow of the American Psychological AssociationHall, Harold V. is the author of 'Detecting Malingering and Deception Forensic Distortion Analysis', published 2001 under ISBN 9780849323256 and ISBN 0849323258.