The problem of stuttering is one which confronts the pediatrician frequently. Despite the vast amount of research in the area of speech pathology which has been carried on in the world, stuttering continues to be a mystifying and frustrating complaint. There continue to be sharp differences of opinion between the experts, with feelings running high on many occasions, because one considers the others too extreme. The book by Johnson et al. reports on the vast amount of work done on stuttering in research and clinical settings at the University of Iowa for over 30 years.