Thousands of professionals and students have relied on this handbook, which has been fully revised, for authentic information on the links between psychological and medical issues from infancy to adolescence. Supported by the Society of Pediatric Psychology, the volume explores psychosocial aspects of specific medical issues, as well as issues in managing developmental and behavioral concerns often seen in pediatric settings. The book outlines best practices in training and service delivery and highlights proven intervention approaches with children and families. All chapters have undergone rigorous review by experts in the field. New to This Edition: Chapters on rural healthcare, transition to adult medical care, prevention, and gender development disorders. Expanded coverage of epigenetics, eHealth applications, cultural and ethnic diversity, spina bifida, and epilepsy. Many new authors; extensively revised with the latest information on clinical populations, research methods, and interventions. Chapters on training and professional skills, quality improvement and cost-effectiveness, and international collaborations. See also Clinical Practice of Pediatric Psychology, edited by Michael C. Roberts, Brandon S. Aylward, and Yelena P. Wu, which uses rich case material to illustrate intervention techniques.