Dr April McMahon has been Lecturer in Historical Linguistics and Phonology at the University of Cambridge since 1988. From March 2000 she will be Professor of English Language and Linguistics at the University of Sheffield. She is the author of Understanding Language Change (CUP, 1994) and Lexical Phonology and the History of English (CUP, forthcoming 2000), and has published articles and reviews in many journals. She has long-standing research interests in the relationship of phonological theory and sound change, and in interdisciplinary issues including connections between evolutionary theory, genetics and historical linguistics.

"A stunning book, elegantly argued and deftly written. A major theoretical critique, confronting Optimality Theory and other formalist innatist paradigms with the realities of evolutionary biology and neuroscience. One of the most important and sophisticated works in phonological theory of the past couple of decades."--Roger Lass, University of Cape Town

"This book is a careful study of some of the fundamental issues underpinning current linguistics, especially Optimality Theory, and it is a very welcome and timely contribution to debate in that area."-- Andrew Spencer, University of Essex