Book excerpt: This important work provides the most comprehensive coverage of speech production and speech pathologies available today. Concise and practical, it features the work of more than two dozen leading experts, and fully integrates theory, measurement, and treatment of sensorimotor speech disorders. The first section proposes a new four-stage model of speech motor control, and offers a helpful framework for locating the source of specific pathologies within different areas of the brain. Building on this foundation, the book examines current methods of speech assessment and state-of-the-art guidelines for treating dysarthria, apraxia, and other forms of speech impairment.