Joseph C. Stemple, PhD, is professor of communication sciences and disorders in the College of Health Sciences at the University of Kentucky, where he specializes in the study of voice production and disorders. His current research interests include the biology of laryngeal muscles during exercise, the aging voice, and the central neural control of voice production. Dr. Stemple is an active national and international speaker and lecturer. Dr. Stemple is a Fellow of the American Speech-Language-Hearing Association.+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++Nelson Roy, PhD, CCC-SLP, is a professor of speech-language pathology in the Department of Communication Sciences and Disorders at the University of Utah, where he specializes in the study of the voice and its disorders. He holds an adjunct appointment in the Division of Otolaryngology-Head and Neck Surgery and conducts biweekly voice clinics. Dr. Roy has published extensively on the topic of voice disorders including epidemiology, psychological/personality factors, treatment outcomes, differential diagnosis, acoustics, and the direct and indirect economic costs of disordered voice. Dr. Roy is a Fellow of the American Speech-Language-Hearing Association.++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++Bernice K. Klaben, PhD, CCC-SLP