Award Winning Psychologist; Associate Professor; Thomas G. Stemberg Endowed Chair in Child and Adolescent Psychiatry, Harvard Medical School; Founder and Director, Think:Kids Program in the Department of Psychiatry, Massachusetts General Hospital; Author, Changeable: How Collaborative Problem Solving Changes Lives at Home, at School, and at Work (2018); Co-Author, The School Discipline Fix: Changing Behavior Using the Collaborative Problem Solving Approach (2018) and Treating Explosive Kids: The Collaborative Problem Solving Approach (2005)