About the Author
Dennis C. Tanner, PhD received his Doctor of Philosophy degree in Audiology and Speech
Sciences from Michigan State University. He is a prolific author of books, diagnostic tests, and
treatment programs. Dr. Tanner is the owner of Tanner Rehabilitation Services, Inc., a provider
of speech and hearing services in Arizona for 40 years. He serves as an expert witness in legal
cases involving communication sciences and disorders. Dr. Tanner is Professor Emeritus of
Health Sciences at Northern Arizona University and was named “Outstanding Educator” by the
Association of Schools of Allied Health Professions and the “Teacher of the Year” for the College
of Health Professions. He is also an honorary professor at Tehran University of Medical Sciences,
Tehran, Iran. Visit his website at www .drdennistanner .com.