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About the Authors

V. Mark Durand, Ph.D.

Is currently a Professor of Psychology at the University of South Florida in St. Petersburg. He is a consultant for the U.S. Department of Justice, the Michigan Protection and Advocacy Service, and the New York State Education Department and is a member of the Board of Professional Advisors, Autism Society of America. His research and clinical work with people having behavior problems over the span of his career has resulted in numerous journal publications, and several books detailing a positive treatment approach. His ongoing interests have been continued validation of positive treatments for severe behavior problems, treating sleep disorders in persons with disabilities, and developing techniques for improving social relationships between students with severe disabilities and their peers without disabilities.


Daniel Crimmins, Ph.D.

Is Director of the University Center for Excellence in Developmental Disabilities (UCEDD) program, and a Visiting Professor at the Institute of Public Health in the College of Health and Human Sciences, at Georgia State University in Atlanta. He is a member of the Georgia Governor’s Council on Developmental Disabilities and of the Community Advisory Council of the Institute on Human Development and Disability of the University of Georgia UCEDD. Dr. Crimmins has a long term interest in developing nonaversive interventions for persons with challenging behaviors. He has worked in direct service settings, in the schools, and at the university level for more than 30 years, focusing on the dissemination of positive behavioral supports and effective educational practices for students with complex disabilities.