Dr. Peter Rosenbaum reveals developmental pediatric pearls of wisdom as he interacts with 3-year-old Sophia and her mother. Dr. Rosenbaum is a professor of paediatrics at McMaster University and co-founder of CanChild Center for Childhood Disability Research (CanChild: Development in the Rewarding Healthcare Experience). For more pearls, explore the  CanChild Center for Childhood Disability Research website and the famous F Words of Childhood Disability. Young Sophia and her mom share wisdom through their earlier Curriculum of Caring video (Sophia: gifts of wisdom for parents and professionals.)