 2. Which works better for low-income children with ADHD, UOT or CBM? Researchers will test the comparative effectiveness of UOT to CBM with low-income children with ADHD, a new patient population for UOT. Hypothesis 2: UOT will be more effective for children with ADHD than CBM treatment of equal intensity at improving executive functioning, cognitive problem-solving, and equal to CBM in improving behavior and coping skills. 