Children and teenagers who present with externalizing disorders such as conduct disorder or impulse control disorder can be incredibly challenging for their parents, teachers, and loved ones. The behaviors of these children can also be vexing for schools and other systems in which they are educated and treated. These children are at increased risk for delinquency, educational problems, and other outcomes, which may negatively impact their lives. These behaviors and the resultant consequences also pose steep costs to our society. This volume will provide those who work with children a description of best practice in diagnosing and treating children with disruptive behavior disorders, including management of risk. It will also address what is evidence-based practice versus ill-informed policy so that those who work, live with and teach children with challenging behaviors can best help them succeed.