The motor vehicle accident is a leading cause of psychological and physical injury. About 1% of the population in western countries are injured in this way every year. This book systematically reviews the steps in preparing psychological assessments of individuals who have been in a motor vehicle accident (MVA). It comprehensively reviews common mental disorders associated with MVAs and outlines causation mechanisms. The book will appeal primarily to psychologists, but the evaluations outlined will also assist lawyers, insurers, and other interested parties to determine fair compensation for these injuries, as well as ways to rehabilitate those persons impacted. The suggestions and evaluation approaches offered are empirically supported by up-to-date scientific research and the authors’ experiences in conducting thousands of these evaluations over four decades. The ideas presented will help move the systematic evaluations of psychological injuries from motor vehicle accidents forward in an objective and balanced fashion.