Licensed Clinical Psychologist; Assistant Clinical Professor, Department of Psychiatry and Biobehavioral Sciences, UCLA Semel Institute for Neuroscience and Human Behavior; Director, UCLA Tarjan Center, University Center for Excellence in Developmental Disabilities; Founder, Director, UCLA PEERS Clinic; Program Director, Predoctoral Psychology Internship Program, Autism and Neurodevelopmental Disabilities, University of California Los Angeles; Author, The Science of Making Friends: Helping Socially Challenged Teens and Young Adults (2013); Co-Author, “Socialization and Social Skills Programs for Autistic People Across the Lifespan” (2026, Handbook of Treatments for Autism Spectrum Disorder) and Peers® for Preschoolers: Friendship Skills for Autistic and Neurodivergent Children (2025)