Debriefing has emerged as one of the most controversial interventions in clinical psychology and psychiatry. This book constitutes an unprecedented presentation and analysis of evidence for the efficacy, and otherwise, of psychological debriefing, in theory and application, and appraises current research findings on the proper use of such interventions. With authoritative editorial guidance, the reader is taken through the controversies surrounding debriefing of various kinds, in various settings, and at various levels of organisational supervision and control. Contributors include many of the leading international authorities in post-traumatic studies, drawing on their first-hand experiences as investigators and also witnesses, of traumatic events and their effects. From major disasters affecting large numbers or even whole communities, to individual experiences of road traffic accidents, assault or childbirth, the range of topics and points of view presented will make this an essential reference and guide for all practitioners - whatever their point of view.