This study will also examine the differences between ADHD preschoolers and school-age children with ADHD in their response to the medication. Additionally, the researchers will try to identify what genes are associated with ADHD and the differing responses to methylphenidate. First, there will be a comprehensive evaluation by the study team. Parent and child will then come in for clinical visits, ranging from weekly to monthly, over the next year and a half. The child will be monitored very closely for improvements and for problems through the clinic visits and through information given by parents and teachers, as well as classroom observations.
All participation is at no cost.
The study is being conducted at six clinical sites across the United States. The findings of this evaluation will be shared with parents. Participants will be scheduled for yearly followup visits. All children will receive a monetary honorarium for attending followup visits. In the majority of cases, behavior improvements can be expected with medication treatment.