Handbook of clinical audiology / editor-in-chief, Jack Katz, Director, Auditory Processing Service, Prairie Village, Kansas, and Research Professor, University of Kansas Medical Center, Kansas City, Kansas, and Professor Emeritus, University at Buffalo State University of New York, Buffalo, New York ; editors, Marshall Chasin, Au. D., Director of Audiology Research, Musician's Clinics of Canada, Toronto, Ontario, Canada, Kris English, Ph. D., Professor and Interim School Director, School of Speech Pathology and Audiology, University of Akron/NOAC, Akron, Ohio, Linda Hood, Ph. D., Professor, Department of Hearing and Speech Sciences, Vanderbilt Bill Wilkerson Center, Vanderbilt University, Nashville, Tennessee, USA, Honorary Professor, University of Queensland, Brisbane, Australia, Kim L. Tillery, Ph. D., Professor and Chair, Department of Communication Disorders & Sciences, State University of New York at Fredonia, Fredonia, New York.