Chapter 33. Vowel Development and Disorders

  1. Martin J. Ball Head Past President3,
  2. Dr. Michael R. Perkins Professor founder member Vice-President4,
  3. Dr. Nicole Müller3 and
  4. Sara Howard Senior Lecturer speech-language therapist pathologist President4
  1. Carol Stoel-Gammon doctorate Professor1 and
  2. Dr. Karen Pollock clinical, PhD Professor Chair assistant professor associate professor2

Published Online: 6 MAR 2009

DOI: 10.1002/9781444301007.ch33

The Handbook of Clinical Linguistics

The Handbook of Clinical Linguistics

How to Cite

Stoel-Gammon, C. and Pollock, K. (2008) Vowel Development and Disorders, in The Handbook of Clinical Linguistics (eds M. J. Ball, M. R. Perkins, N. Müller and S. Howard), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444301007.ch33

Editor Information

  1. 3

    University of Louisiana, Lafayette, USA

  2. 4

    Department of Human Communication Sciences, University of Sheffield, UK

Author Information

  1. 1

    Department of Speech and Hearing Sciences, University of Washington, USA

  2. 2

    Department of Speech Pathology and Audiology, University of Alberta, Canada

Publication History

  1. Published Online: 6 MAR 2009
  2. Published Print: 28 MAR 2008

ISBN Information

Print ISBN: 9781405135221

Online ISBN: 9781444301007



  • vowel development and disorders;
  • development of vowels in infancy;
  • From babble to speech;
  • vowel acquisition in meaningful speech;
  • analysis of errors in consonant productions;
  • vowel acquisition in other languages;
  • vowel production in children with phonological disorder;
  • vowel errors - oft-cited characteristic of childhood apraxia of speech (CAS);
  • vowel treatment


This chapter contains sections titled:

  • Introduction

  • The Vowel System of American English

  • Development of Vowels in Infancy

  • Vowel Acquisition in Meaningful Speech

  • Vowel Production in Children with Phonological Disorder

  • Vowel Errors as a Marker of Childhood Apraxia of Speech (CAS)

  • Clinical Assessment of Vowel Errors

  • Treatment of Vowels

  • Summary and Conclusion

  • References