· Chapter 1 has been completely revised to include more basic concepts such as communication, speech, and language, as well as the subdivisions of language, providing a more basic foundation for understanding later concepts. · A new section-English as a Second Language: Considerations for Phonological Development in Children has been added to Chapter 5, emphasizing this current, important topic. · A new Chapter 7, Dialects and English as a Second Language expands on sections that were previously in Chapter 6, providing readers with a substantial knowledge base to meet this growing area of practice. · Chapter 9: Therapy for Phonetic Errors , has been thoroughly reorganized , using easy-to-read tables and flow charts to summarize information and make the therapy ideas for many errors much clearer. · Several new therapy approaches-Complexity Approach, Phonological Awareness Training, Morphosyntax Intervention, and connecting phonology and semantics in Vocabulary Intervention-are discussed in Chapter 10 , providing up-to-date therapy models that can be used to treat children with phonological disorders or concurrent language difficulties. · The section on childhood apraxia of speech in Chapter 11 has been expanded to include the 2007 definition from the Ad Hoc Committee on Childhood Apraxia of Speech and the symptoms and research from the technical report and position statement from ASHA, 2007. · Guidelines and definitions provided by the American Speech Language Hearing Association for establishing communication, language, articulation, and phonological disorders are included in Chapter 1. · New tables summarizing information have been added to several of the chapters and add to the readability of the text.

· Clinical Exercises in each chapter ask readers to apply the chapter's information to clinical examples and show how the concepts are relevant in a clinical setting. · Bibliographical references have been expanded to include new topics and more current research throughout the text.