"This book takes a practical approach to how best to set about establishing the effectiveness of treatment for voice disordered patients. The book is aimed at the practising voice clinician who is interested in the effectiveness of treatment. Most voice therapy techniques have not been properly evaluated. Voice clinicians have a professional responsibility to establish evidence of treatment effectiveness. If they do not do it, then others may do it for them. This book is for the practising clinician and takes a realistic approach to this complicated clinical issue."--Jacket.