Recognized as the definitive reference in the field, this book addresses a broad range of biologically based disorders that affect children's learning and development. Leading authorities review the genetics of each disorder; its course and outcome; associated developmental, cognitive, and psychosocial challenges; and what clinicians and educators need to know about effective approaches to assessment and intervention. Coverage encompasses numerous lower-incidence neurodevelopmental disabilities as well as more frequently diagnosed learning and behavior problems with a genetic component. New to This Edition: incorporates the latest scientific knowledge and clinical practices chapters on oppositional disorders and mood disorders lower-incidence disorders not covered in prior edition: mitochondrial disease, major cortical anomalies, spina bifida, and inborn errors of metabolism.This book will be of importance to neuropsychologists, pediatric and child clinical psychologists, educational and school psychologists, child psychiatrists, speech'language pathologists, pediatric neurologists, and pediatricians; also of interest to special educators. It will also serve as a text in graduate-level courses.