First, subjects will receive a psychiatric and medical evaluation by the study psychiatrist to see if she/he has any psychiatric or medical illnesses that would interfere with their ability to participate in this study. These evaluations may take up to an hour to complete. In addition, subjects will be asked to participate in a psychiatric interview designed to determine the child’s diagnosis and current problem areas. The subject’s parent will also be asked to fill out psychiatric questionnaires. The interview and questionnaires may take up to 4 hours to complete.