Conners Rating Scales

The Conners Rating Scales-Revised (CRS-R), developed by Keith Conners and updated in 2008, is the most widely used rating scale instrument for identifying and assessing attention-deficit/hyperactivity disorder (ADHD) and behavioral problems in children and adolescents aged 6–18 years. Available in parent, teacher, and self-report versions, the CRS-R provides comprehensive assessment of ADHD symptoms and comorbid behavioral concerns across multiple informants and settings.