This textbook describes the approaches to phonology that are most relevant to communication disorders. It examines schools of thought in theoretical phonology, and their relevance to description, explanation and remediation in the clinical context.A recurring theme throughout the book is the distinction between phonological theories that attempt elegant, parsimonious descriptions of phonological data, and those that attempt to provide a psycholinguistic model of speech production and perception.This book introduces all the relevant areas of phonology to the students and practitioners of speech-language pathology and is a companion volume to the authors' Phonetics for Communication Disorders.