While a significant body of research as been amassed on mental wellness supports for adults with intellectual or development disabilities (IDD), far less attention has been paid to these same issues among youth with IDD. This ground-breaking book is a first step to changing that. This edited volume addresses a wide variety of different concerns in improving mental wellness and treating mental health disorders among youth with IDD, with chapters from recognized experts covering topics ranging from psychotherapy to psychopharmacology. The book maintains a strong focus on healthy psychological development. The book will be an excellent resource for any professional concerned about mental wellness youth with IDD, as a tremendouos number of different discipline areas are reflected within the fifteen chapters.