Chapter 32. Coarticulation and Speech Impairment

  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. Bill Hardcastle Professor Director Head Dean Fellow Honorary Fellow President1 and
  2. Dr. Kris Tjaden Associate Professor Director2

Published Online: 6 MAR 2009

DOI: 10.1002/9781444301007.ch32

The Handbook of Clinical Linguistics

The Handbook of Clinical Linguistics

How to Cite

Hardcastle, B. and Tjaden, K. (2008) Coarticulation and Speech Impairment, 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.ch32

Editor Information

  1. 3

    University of Louisiana, Lafayette, USA

  2. 4

    Department of Human Communication Sciences, University of Sheffield, UK

Author Information

  1. 1

    Queen Margaret University, Edinburgh, UK

  2. 2

    Department of Communicative Disorders and Sciences, University at Buffalo, USA

Publication History

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

ISBN Information

Print ISBN: 9781405135221

Online ISBN: 9781444301007



  • coarticulation and speech impairment;
  • motor speech disorders associated with amyotrophic lateral sclerosis (ALS) and Parkinson's disease (PD);
  • coarticulation in clinical populations;
  • acoustic techniques;
  • measurement of coarticulation;
  • electromagnetic articulography (EMA), X-ray and real-time magnetic resonance imaging;
  • optoelectronic techniques - VICON and SELSPOT;
  • speech motor control disorders;
  • coarticulation or coordination in apraxia of speech (AOS)


This chapter contains sections titled:

  • Coarticulation: The Concept

  • Measurement of Coarticulation

  • Coarticulation in Clinical Populations: General Issues

  • Coarticulation in Specific Clinical Populations

  • Conclusion

  • References