This book challenges the assumptions of the event-dominated DSM model of posttraumatic stress disorder. Bowmam examines a series of questions directed at the current mental health model, reviewing the empirical literature. She finds that the dose-response assumptions are not supported; the severity of events is not reliable associated with PTSD, but is more reliably associated with important pre-event risk factors. She reviews evidence showing the greater role of individual differences including trait negative affectivity, belief systems, and other risk factors, in comparison with event...