 There has been increasing recognition that many children with attention deficit hyperactivity disorder ADHD exhibit depressive and manic-like symptoms suggestive of major depressive disorder MDD and bipolar disorder BP. Many children with ADHD plus impairments in mood display symptoms of irritability, affective instability, and reactive aggression, but they typically lack the hallmark symptoms, such as extreme mood cycles and sustained depressed mood, that lead to a BD or MDD diagnosis. Significant debate exists as to whether these children have a true comorbid mood disorder, making treatment of mood symptoms in ADHD children controversial. ADHD is traditionally treated with stimulant medications andor behavior modification therapy. However, little is known about the safety of stimulants in ADHD children with manic symptoms. Also, no treatments exist that are designed to simultaneously improve both ADHD and mood problems in children. Psychosocial treatments hold particular promise for ADHD children with impairments in mood because they are well-studied pediatric treatments with little risk of worsening mood symptoms. This study will develop an integrative psychosocial treatment that includes aspects of cognitive behavioral therapy CBT and psychoeducational techniques for pediatric and adult mood disorders. The study will then evaluate the effectiveness of the integrative psychosocial treatment, called group behavior therapy, combined with stimulant medication in improving moods and enhancing treatment responses in children with ADHD and impairments in mood. 