Peter Szatmari, MD, is the Chief of the Child and Youth Mental Health Collaborative between the Centre for Addiction and Mental Health, The Hospital for Sick Children, and the University of Toronto. The head of one of the largest divisions of child and adolescent psychiatry in the world, Peter is an international expert in autism spectrum disorder and specializes in family-based treatment for children and adolescents with depression, eating disorders, oppositional behaviors, and anxiety disorders. He also holds the Patsy and Jamie Anderson Chair in Child and Youth Mental Health, and is the author of A Mind Apart: Understanding Autism and Asperger Syndrome and the coauthor of Start Here: A Parent’s Guide to Helping Children and Teens through Mental Health Challenges.