Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Intelligence and dyslexia: implications for diagnosis and intervention.

S Gustafson1, S Samuelsson

  • 1Department of Education and Psychology, Linköping University, Sweden. stegu@ipp.liu.se

Scandinavian Journal of Psychology
|July 10, 1999
PubMed
Summary

The IQ discrepancy criterion for diagnosing dyslexia is flawed. Poor readers, regardless of IQ, may benefit from similar phonological skill interventions.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The clinical efficacy of PSMA PET/MRI in biochemically recurrent prostate cancer compared with standard of care imaging modalities and confirmatory histopathology: results of a single-centre, prospective clinical trial.

Clinical & experimental metastasis·2020
Same author

Using sentinel surveillance to monitor effectiveness of influenza vaccine is feasible: A pilot study in Denmark.

Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin·2017
Same author

Ascertainment of meningococcal disease in Europe.

Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin·2017
Same author

Impact of Protease Inhibitor-Based Anti-Retroviral Therapy on Outcomes for HIV+ Kidney Transplant Recipients.

American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons·2017
Same author

Increased Mortality and Graft Loss With Kidney Retransplantation Among Human Immunodeficiency Virus (HIV)-Infected Recipients.

American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons·2016
Same author

Prostate Specific Membrane Antigen Positron Emission Tomography May Improve the Diagnostic Accuracy of Multiparametric Magnetic Resonance Imaging in Localized Prostate Cancer.

The Journal of urology·2016

Area of Science:

  • Cognitive Psychology
  • Educational Psychology
  • Neuroscience

Background:

  • The traditional definition of dyslexia relies on an IQ-discrepancy criterion, classifying individuals as dyslexic if their reading skills fall significantly below their intellectual capacity.
  • This criterion assumes a clear causal link between intelligence (IQ) and word decoding abilities, a relationship that is increasingly being questioned in scientific literature.

Purpose of the Study:

  • To critically evaluate the theoretical underpinnings and practical implications of incorporating IQ into the definition of dyslexia.
  • To explore alternative frameworks for understanding and classifying reading difficulties, particularly dyslexia.

Main Methods:

  • Theoretical analysis of the IQ-discrepancy model in dyslexia diagnosis.
  • Review of empirical evidence on the relationship between intelligence, phonological skills, and reading performance.

Related Experiment Videos

  • Discussion of recent definitions of dyslexia and their alignment with current research.

    • Main Results:

    • Intelligence is a complex and imprecisely defined construct, lacking a clear causal relationship with word decoding skills.
    • Poor readers with both high and low IQ exhibit similar reading performance patterns, suggesting shared underlying difficulties.
    • Phonological skills play a critical role in dyslexia, independent of IQ levels.

    Conclusions:

    • The IQ-discrepancy model for dyslexia is theoretically weak and may lead to suboptimal interventions.
    • Alternative, outcome-based classifications focusing on specific deficits (e.g., phonological processing) are more effective for guiding remedial strategies.
    • Interventions for dyslexia should prioritize addressing core deficits rather than relying on IQ-based categorizations.