This is an informative, sensibly written book for parents and teachers, and testifies to the authors' practical experience in dealing with parents and their problems. The setting the authors have given their effort to instruct parents in the sexual education of children is perhaps the most valuable feature of the book; it might well have been entitled The Mental Hygiene of Childhood and Youth. The interpretations are largely based upon current psychoanalytic concepts of the sexual development of the child but are