The role of intelligence in the definition of dyslexia.

Research output: Chapter in Book/Report/Conference proceedingChapter


The disputable role of intelligence in the concept and definition of developmental dyslexia is critically evaluated. The implicit assumptions of the discrepancy concept connected with the underachievement conceptualization are explicated. Further it is shown that the regression-based operationalisation of a discrepancy is logically inconsistent with the underlying concept of underachievement. Finally, an attempt is made to explain the specificity paradox: the requirement that dyslexia be defined as a deficit that is reasonably specific to the reading task, while cognitive differences are ubiquitous between reading disabled and nondisabled children.
Original languageEnglish
Title of host publicationLearning Disabilities. A Challenge to Teaching and Instruction
EditorsP. Ghesquière
PublisherLeuven University Press
Number of pages24
ISBN (Print)978-90-5867-444-9
Publication statusPublished - 2005

Publication series

NameStudia Paedagogica

Bibliographical note

P. Ghesquière & A.J.J.M. Ruijssenaars (Eds.).


  • intelligence
  • discrepancy, learning disabilities, regression


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