Reading and Writing

, Volume 8, Issue 5, pp 443–451 | Cite as

Theoretical and methodological pitfalls in making comparisons between developmental and acquired dyslexia: Some comments on A. Castles & M. Coltheart (1993)

  • Margaret J. SnowlingEmail author
  • Peter E. Bryant
  • Charles Hulme


On the basis of a study of the reading skills of 56 developmental dyslexics, Castles & Coltheart (1993) have proposed that there are at least two varieties of dyslexia in children. In the first, there is an impairment of lexical reading and in the second, the operation of the sublexical procedure is impaired. We take issue with their, proposal on theoretical grounds and argue that methodologlcal weaknesses in their study seriously weaken their claims.

Key words

Dyslexia Methodology Reading-age match Sub-types Reading disability 


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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Margaret J. Snowling
    • 1
    Email author
  • Peter E. Bryant
    • 2
  • Charles Hulme
    • 3
  1. 1.University of YorkUK
  2. 2.University of OxfordOxfordUK
  3. 3.University of YorkUK

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