Dr. Mort Cooper's book Curing Hopeless Voices is a clearly written well documented explanation of his position on the causes and treatment of spasmodic dysphonia and associated hyper-functional voice disorders whose treatment of such patients has proven efficatious and impressively documented in his DVDs.

Arnold Aronson, Ph.D., Sc.D.
Former Head of the Speech Pathology Department of Neurology and Professer at Mayo College of Medicine

Dr. Cooper is the best speech pathologist I know

Joel J. Pressman, M.D.
Former chairman of the Head and Neck Division, UCLA Medical Center

Cooper’s the best in the business

Lee Edward Travis, Ph.D.
One of the five founders and past president of the American Speech-Language Hearing Association

...of all Voice Disorders, Dr. Cooper's methods seemed essentially quite simple, but they worked...We know you are the only one successful [for SD] by speech therapy

Henry J. Rubin, M.D.
ENT, UCLA Medical Center, Faculty Head and Neck Division (Retired)

I found him to be really excellent

Robert H. Rand, M.D.
Professor of neurological surgery, UCLA Medical Center

This book may well turn upside-down the traditional training and practice of voice therapists” said of Dr. Cooper’s Modern Techniques of Vocal Rehabilitation

John Warkentin, Ph.D., M.D.
Psychiatrist, Atlanta Psychiatric Clinic

This book [Dr. Cooper’s Modern Techniques of Vocal Rehabilitation] is superb.

Lawrence Pleet, M.D.
Otolaryngologist & Clinical Instructor, Department of Head and Neck Surgery, University of California at Los Angeles School of Medicine