Jeff Sigafoos

Jeff Sigafoos, Ph.D., is a professor in the School of Education at Victoria University of Wellington. He undertakes research on the application of systematic instructional procedures for teaching adaptive skills to students and adults with severe disabilities. He has published widely on teaching communication skills to nonverbal individuals with developmental disabilities.

Giulio E. Lancioni, Ph.D., is the director of the Lega F. D’Oro Research Center, Osimo (AN), Italy. He specializes in the use of assistive technology interventions to enhance the adaptive behavior functioning of people with severe, profound, and multiple disabilities.

Mark F. O’Reilly, Ph.D., is the Melissa Elizabeth Stuart Centennial Professor in the Department of Special Education at The University of Texas at Austin. His research focuses on teaching adaptive skills to individuals with severe disabilities and on the assessment and treatment of challenging behavior of individuals with autism and other developmental disabilities.