Annals of Dyslexia

, Volume 53, Issue 1, pp 1–14 | Cite as

A definition of dyslexia

  • G. Reid LyonEmail author
  • Sally E. Shaywitz
  • Bennett A. Shaywitz
Part I Defining Dyslexia, Comorbidity, Teachers’ Knowledge Of Language And Reading


This paper elaborates on the components of a working definition of developmental dyslexia. It follows the general format of a paper by Lyon published in Annals of Dyslexia in 1995, which elaborated on a working definition proposed in 1994 (Lyon, 1995). The current definition agreed on by the work group updates and expands on the working definition from 1994.


Word Recognition Phonological Awareness Reading Disability Learning Disability Dyslexia 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© The International Dyslexia Association 2003

Authors and Affiliations

  • G. Reid Lyon
    • 1
  • Sally E. Shaywitz
    • 2
  • Bennett A. Shaywitz
    • 2
  1. 1.National Institute of Child Health and Human DevelopmentNational Institutes of HealthBethesda
  2. 2.Yale University School of MedicineNew Haven

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