Subjects were excluded if they had a history of head injury with loss of consciousness >2 minutes, neurological or medical problems, learning disabilities, psychiatric disorder, current psychotropic medication use, significant maternal drinking or drug use during pregnancy, left-handedness, sensory deficits, MRI contraindications; and parental history of bipolar I, psychotic disorder, or antisocial personality disorder. The youth and participating family members were financially compensated for participation.
