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David L. Irwin, received his Ph.D. in Communication Disorders from the University of Oklahoma Health Sciences Center, M.S. and B.S.E. in Speech Pathology from Central Missouri State University. He is a Fellow of the American Speech-Language-Hearing Association, holds Honors of the Association from the Louisiana Speech-Language-Hearing Association, a member of Alpha Eta Honor Society for Allied Health and Phi Kappa Phi. He has served as President, Editor and Chair of the Continuing Education Committee for the Louisiana Speech-Language-Hearing Association and Chair of the Communication Disorders and Sciences Leadership Group for states in Southern Region. He has co-authored with Dr. Pannbacker a chapter in a textbook about ethics in research and has received over $1.4 million in external grants.