David Beukelman  David R. Beukelman, Ph.D., is a speech-language pathologist who specializes in augmentative and alternative communication and communication disorders associated with neurological conditions. He is the Barkley Professor Emeritus of Communication Disorders at the University of Nebraska-Lincoln and used to be the Director of Research and Education of the Communication Disorders Division, Munroe/Meyer Institute of Genetics and Rehabilitation, University of Nebraska Medical Center, Omaha, Nebraska. He currently is a Senior Researcher in the Institute for Rehabilitation Science and Engineering at Madonna Rehabilitation Hospital in Lincoln, Nebraska.