This challenge may explain why, in chapter after chapter, the authors lament the dearth of solid, controlled studies. The purpose of the book is to present the work that has been done with survivors of large-scale disasters such as the World Trade Center attack, as well as survivors of individual events, such as motor vehicle accidents and rape. There are chapters on infants, children, adolescents, and adults. A chapter on complicated grief does a masterful job of differentiating complicated grief from normal grieving. Another chapter presents the theories of critical incident stress management and concludes that there is a lack of evidence that this procedure is helpful. Cognitive-behavioral therapy is presented as a better alternative.