This book is primarily an introduction to the main trends in 20th century phonology, with emphasis on structuralist phonemics and generative phonology, followed by some notes on optimality theory. The cognitive perspective reveals itself primarily through an interesting and critical discussion, and the result is one of the better textbooks on phonology written in several decades. However, for most linguists, Cognitive Grammar is Ronald W. Langacker's variety of Cognitive Linguistics. When this book has the subtitle "A cognitive grammar introduction", you expect it to be based on Langacker's theory, and it is surprising to discover that it's not. In fact, Ronald W. Langacker's and Joan L. Bybee's usage-based approaches are not discussed, except for some very short and critical remarks in the end of the book. I am surprised to see the book included in the series "Cognitive Linguistics in Practice". There are some irritating printing errors and several phonological rules are written incorrectly. The reader looking for a genuine introduction to phonology within a Cognitive Grammar framework should read 3110203618 Tore Nesset: Abstract Phonology in a Concrete Model.