For the review, 507 articles and 10 published rating scale manuals were compiled from empirical articles; traditional
databases (Medline, PsychINFO); reference lists in review papers; references from the Practice Parameters for the Assessment and Treatment of Children, Adolescents, and Adults with Attention - Deficit / Hyperactivity Disorder5; recently published journal articles;
citations suggested by members of the American Academy of Pediatrics; and a
database of bibliographies on studies involving the Child Behavior Checklist rating scale.6 A physician and psychologist
specializing in ADHD independently rated each article and manual for sound empirical evidence addressing the 4 questions.