This top professional and academic reference in forensic psychology is an established presence as both a professional reference and graduate text. This Fourth Edition is completely revised and updated for the new and rapidly growing demands of the field to reflect the new tools available to, and functions required of, present-day practitioners. The new edition expands coverage of neuropsychological assessment, eyewitness testimony, ad jury competence and decision-making, including selection, process and authority. In addition, the new ethics guidelines approved by the American Psychological Association (APA) are included and interpreted.