This volume provides a state-of-the-science review of knowledge on bipolar disorder in children, covering all aspects of theory, research, and practice. Leading clinical researchers address such topics as epidemiology, diagnosis and assessment, comorbidity, and outcomes. A range of different treatment approaches are described and evaluated, including pharmacotherapy, psychotherapy, and family-based psychoeducation and support. Compelling findings are also presented on the neurobiological and genetic bases of the disorder. Throughout, the book identifies promising directions for further investigation while weighing in on key methodological questions and areas of controversy.