Trained interviewers used the Child and Adolescent Psychiatric Assessment—Parent Version (16), a semistructured research diagnostic interview, to assess psychiatric diagnoses. Pervasiveness of ADHD symptoms (in school) was assessed using the Child Attention-Deficit Hyperactivity Disorder Teacher Telephone Interview (17) or the Conners Teacher Questionnaire (18). IQ was assessed using the WISC-IV (19).
