Dr. Joel E. Ringdahl is a Professor of Special Education in the Communications Sciences and Special Education Department at the University of Georgia (USA) and Co-Director of the University of Georgia’s Center for Autism and Behavioral Education Research (CABER). He received his Ph.D. (1999) and MA (1995) in Psychology from Louisiana State University, and a BS (1992) in psychology from the University of Florida. Dr. Ringdahl is a licensed psychologist and a Board Certified Behavior Analyst. He has served several editorial roles, including editor-in-chief for Behavior Analysis: Research and Practice and associate editor for the Journal of Applied Behavior Analysis and The Psychological Record. He currently serves on a number of editorial boards. Dr. Ringdahl’s research interests include functional analysis and treatment of severe challenging behavior exhibited by individuals with intellectual and developmental disabilities, stimulus preference assessments, functional communication training, and translational research in the areas of response persistence and relapse and behavioral economics. Dr. Ringdahl has published numerous peer-reviewed articles, co-edited two textbooks on behavior analysis, and has been a funded researcher through the National Institutes of Health (USA) for the past 25 years. In his clinical work, Dr. Ringdahl has worked in hospital and university-based clinics, state facilities, community facilities, schools, and in private homes. In those settings, Dr. Ringdahl has worked across the age range with individuals ranging in age from two years old to 90 years old.