This revised Third Edition serves as the primary textbook for introductory courses in articulation and phonological disorders. The text focuses on articulation and phonological development and disorders, their management, and the many approaches/techniques of current treatment. Features of this clear text include: chapter subheadings that lead students throughout the material; boxed questions about important information; case examples to illustrate practical applications; chapter content summaries and study suggestions for instructors; and 100 illustrations. Chapters on treatment feature quick reference protocols of various treatments for students to use in planning intervention for case study projects, observations of clinicians, or their own clients.