3. Established Treatment changes: Any change in established psychotropic medication (e.g., antidepressants, anxiolytics) within 8 weeks before study enrollment (6 weeks for antipsychotic). Alternative medications that might have behavioral effects must be stable for 6 weeks prior to the study baseline assessment. Any medications that the adolescent is on must remain stable during treatment. If a potential participant is taking psychotropic medication at the time of the phone evaluation or the first in-person study assessment and wishes to discontinue this medication to enter the study, the patient will be asked to discuss this option with their prescribing physician to determine whether medication discontinuation would be safe and in the adolescent's best interest. In addition, we will obtain the patient's written consent to contact their treating clinician to determine the appropriateness of study participation. We will not influence the decision patients make with their prescribing physician. All pharmacotherapy recommendations will be made in consultation with Dr. Murphy.