The authors are to be commended for their thorough scholarship. They have reviewed countless books and articles that may offer considerable help for future investigators, but many of these studies have limited value for clinicians. They deal with fairly large samples, but often their conclusions seem simplistic, especially when so much time, energy, and money have been involved. For example, one such study concluded, "Maltreated children as young as 2 years were more angry, non-compliant and frustrated . . . than were control children" (p. 20). Hardly a surprising conclusion. Poincaré, the famous French mathematician, once said that if you want to know the age of a ship's captain, it is better to ask him rather than count the planks on the deck. This may involve some risk, and in some instances be inaccurate, but it is less complicated and more economical than and, perhaps, just as useful as gathering statistics.