The Handbook of Phonological Theory brings together a detailed examination of the state of phonological theory in this decade. In a series of essays on topics as varied as underspecification theory, prosodic morphology, and syllable structure, 37 leading phonologists offer a critical survey of the leading and guiding ideas that lie behind the research in this active area of linguistic research. In all cases, the contributions have been written by leading workers in the areas which they discuss, and in many of the cases, the chapters of the handbook are the first published expositions of new perspectives which have already begun to shape the climate of research in the field.