A structural and functional imaging research of children with Attention Deficit Hyperactivity Disorder (ADHD)

This study is using brain imaging (MRI and other scans) to look at the structure and function of the brain in boys with Attention Deficit Hyperactivity Disorder (ADHD). ADHD causes problems with attention, impulse control, and sometimes hyperactivity. By comparing brain scans of boys with ADHD to those without, researchers hope to better understand what is happening in the brain and how it relates to the symptoms of ADHD. You may be eligible if: - You are a boy between 11 and 16 years of age - You have been diagnosed with ADHD according to standard diagnostic criteria (DSM-IV) - You have an IQ score of 80 or higher You may NOT be eligible if: - You are left-handed - You have a history of head injury with loss of consciousness - You have a neurological illness (such as epilepsy) - You have another psychiatric diagnosis such as schizophrenia, anxiety disorder, Tourette syndrome, autism, or intellectual disability Talk to your doctor about whether this trial might be right for you.