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Stability of IQ measures in teenagers and young adults with developmental dyslexia

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Author

  • Gunnel Ingesson

Summary, in English

A follow-up study was performed to investigate the stability of IQ measures in a group of dyslexic teenagers and young adults. Earlier research had shown contradictory results. The 65 subjects, 12 years old on the average at first test, were retested after a mean interval of six and a half years. There was a significant relative decrease in verbal IQ (VIQ), which was interpreted as either an effect of low reliability of tests used, or an effect of the dyslexic individuals' less experience with reading and writing, and as a consequence, a lag in verbal ability, the second interpretation being in line with earlier findings in groups of children with learning disabilities. Performance IQ improved significantly and the tentative interpretation was that of a compensatory process, in the sense that the dyslexic children might develop a more visual, intuitive and creative way to process information and solve problems. The conclusion was that caution should be taken, before making important decisions on the basis of a single intelligence test, and that dyslexic children might be at risk to lag behind their peers in terms of VIQ, especially if they are not provided with suitable special education. Copyright (c) 2005 John Wiley & Sons, Ltd.

Publishing year

2006

Language

English

Pages

81-95

Publication/Series

Dyslexia

Volume

12

Issue

2

Document type

Journal article

Publisher

John Wiley & Sons Inc.

Topic

  • Psychology

Keywords

  • follow-up
  • developmental dyslexia
  • cognitive development
  • IQ stability

Status

Published

ISBN/ISSN/Other

  • ISSN: 1076-9242