Over the past decade forensic psychology has grown rapidly as a subject, with an increasing number of forensic psychologists under training and working in demanding roles in prisons, secure training facilities, and high, medium and low security healthcare facilities as well as other parts of the criminal justice system.This ''Dictionary'' is part of a new series of ''Dictionaries'' covering key aspects of criminal justice and the criminal justice system, designed to meet the needs of both students and practitioners.It contains approximately 300 entries (of between 500 and 1500 words) on key terms and concepts arranged alphabetically. These entries are contributed by leading academic and practising forensic psychologists. It is designed to meet the needs of both students and practitioners. The entries includes summary definition, main text and key texts and sources takes full account of the criteria and syllabus for the BPS-approved Diploma in Forensic Psychology and MSc in Forensic Psychology. The book is edited by leading authorities in the forensic psychology field.