Samuel L. Odom, PhD, is Director of the Frank Porter Graham Child Development Institute and Professor in the School of Education at the University of North Carolina at Chapel Hill. His current work focuses on the efficacy of preschool readiness programs for at-risk children, treatment efficacy of early intervention for young children with autism, and professional development related to autism spectrum disorder.

Robert H. Horner, PhD, is Alumni-Knight Professor of Special Education and interim Associate Dean for Research in the College of Education at the University of Oregon. His research interests focus on positive behavior support, applied behavior analysis, stimulus control, instructional technology, severe disabilities, and sustainable systems change.

Martha E. Snell, PhD, is Professor in the Curry School of Education at the University of Virginia, where she is also coordinator of the Special Education Program. Her current research addresses positive behavior support and beginning communication.

Jan B. Blacher, PhD, is Professor of Education and Faculty Chair of the Graduate School of Education at the University of California, Riverside. Her research addresses intellectual disability/mental retardation and other developmental disabilities, family issues, and special education programming.