Dr. Mario Cappelli is a Clinical Psychologist working with children, youth, young adults and their families and the Senior Child and Youth Mental Health Clinician-Scientist at the Knowledge Institute for Child and Youth Mental Health & Addiction. Dr. Cappelli is currently leading several provincial projects that aim to improve service and clinical pathways to child and youth mental health and addiction services. Dr. Cappelli and his team also developed the HEADS-ED and HEADS-ED Under 6 mental health and addiction screening tools that are used throughout Ontario and Canada to guide assessment and treatment recommendations.