His research focuses on improving secondary transition outcomes for individuals with disabilities in particular individuals with Autism Spectrum Disorder. He graduated with his Ph.D in School Psychology from the University of Connecticut. Dr. Gelbar is a Board Certified Behavior Analyst-Doctoral Level (BCBA-D), a Nationally Certified School Psychologist, and a Licensed Psychologist. Previously, he worked as a high school social studies teacher. Dr. Gelbar has published 12 articles in peer-reviewed journals with an additional five articles under review. He serves as the Publications and Communications Chair for the Division 16 (School Psychologists) Early Career Workgroup of the American Psychological Association. Dr. Gelbar also serves as the internal evaluator for the OSEP Early Childhood Personnel Center.