William Singletary is a child, adolescent, and adult psychiatrist and psychoanalyst in practice in Philadelphia, PA.

Timothy Rice is Professor of Psychiatry at the Icahn School of Medicine at Mount Sinai and Clinical Professor of Psychiatry at Columbia University Vagelos College of Physicians and Surgeons in New York, NY.

Catherine Lord is the George Tarjan Distinguished Professor of Psychiatry in the David Geffen School of Medicine at UCLA in Los Angeles, CA.

Anne Alvarez is a consultant child and adolescent psychotherapist and retired co-chair for the Autism Service at the Tavistock Clinic, London.