Cognitive Behavior Therapy (CBT) is most appropriate for older children, teens, and adults.  CBT is a merging of cognitive therapy (or cognitive restructuring based on the assumption that faulty thoughts are influencing behavior) and behavior therapy (goal-oriented approach which consists of re-arranging rewards / punishments in the environment) to decrease negative behaviors and increase positive behaviors.  Dr. Gangarosa-Emerson typically incorporates other therapies with CBT, particularly for children.