In 62 chapters, this reference covers the theory and basic principles relating to the assessment and treatment of sensorimotor speech disorders, including dysarthria, impairment secondary to hearing loss, and apraxia. Measurement strategies are summarized, as are treatments. In this edition, McNeil (communications sciences and disorders, U. of Pittsburgh) adds 46 new chapters, which are brief, on diseases, syndromes, and pathologic conditions accompanied by these disorders. New chapters on treatment for speech and sensorimotor fluency disorders are included. The ultrasound measurement of speech movements is omitted. The volume is meant for students in speech-language pathology programs, and clinicians and researchers. Contributors are from around the world and work in speech pathology, communication science and disorders, and other fields.