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. He is currently leading several 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.