Originally published in 1991, the recent developments in the study of phonological disorders in children had led to a fruitful interaction between speech pathology and phonology. It is one aspect of the application of linguistic theory to the study of speech and language disorders which had opened up a new field, clinical linguistics. This book brings together the concerns of the linguist and the speech pathologist; the essays chosen share the quality of not discussing theory or therapy without addressing the implications one has for the other. By concentrating on recent work the editor hoped to stimulate further discussion in this important and fast growing area of research.