Jeffrey R. Sprague, PhD, is Professor of Special Education and Co-Director of the Institute on Violence and Destructive Behavior at the University of Oregon. His research interests include positive behavioral interventions and supports (PBIS), multi-tiered systems of support, alternative education, juvenile delinquency prevention and treatment, restorative practices, and school safety. Dr. Sprague coauthored the first guide to functional behavioral assessment and the first guide to schoolwide PBIS implementation, as well as several other books and over 300 journal articles and book chapters.

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Hill M. Walker, PhD, is Founder and Co-Director of the Institute on Violence and Destructive Behavior at the University of Oregon and Senior Research Scientist at the Oregon Research Institute. His research interests include social skills assessment, school safety, curriculum development and intervention, longitudinal studies of aggression and antisocial behavior, and the development of early screening procedures for at-risk students. Dr. Walker is a recipient of the Kauffman–Hallahan–Pullen Distinguished Researcher Award from the Council for Exceptional Children and the Research Award from the National Center for School Mental Health, among other honors.

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