Sean M. Inderbitzen, DSW, LCSW, is an autist psychotherapist and researcher through Mayo Clinic Health System, and the author of Autism in Polyvagal Terms (Norton, 2024). He regularly trains healthcare professionals to be more confident when working with people on the spectrum. Stephen W. Porges, PhD, originator of Polyvagal Theory, is a Distinguished University Scientist and founding director of the Kinsey Institute Traumatic Stress Research Consortium at Indiana University, and a professor of psychiatry at the University of North Carolina. He lives in Atlantic Beach, Florida.