Sigmund Eldevik is an associate Professor at Oslo Metropolitan University, Department of Behavioral Science, where he teaches courses in behavior analysis, early intervention for children with autism, and developmental psychology. He is a clinical psychologist from the University of Oslo, and a BCBA-D. His doctoral degree is from the University of Bangor, Wales. He works part time at the Center for Early Intervention in Oslo (STI), as a clinical psychologist and clinical director. At OsloMet he is the leader of the research group “Applied and Experimental Behavior Analysis in Clinical Practice”. His research interests are on early intensive behavioral interventions for children with autism and other developmental disabilities. The research group has extensive experience in carrying out outcome research and have published several frequently cited papers.