Double dissociation of functions in developmental dyslexia and dyscalculia

Orly Rubinsten, Avishai Henik

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

Abstract

This work examines the association between symbols and their representation in adult developmental dyscalculia and dyslexia. Experiment 1 used comparative judgment of numerals, and it was found that in physical comparisons (e.g., 3-5 vs. 3-5) the dyscalculia group showed a significantly smaller congruity effect than did the dyslexia and the control groups. Experiment 2 used Navon figures (D. Navon, 1977) in Hebrew, and participants were asked to name the large or the small letters. Phoneme similarity modulated performance of the control and the dyscalculia groups and showed a very small effect in the dyslexia group. This suggests that the dyscalculia population has difficulties in automatically associating numerals with magnitudes but no problems in associating letters with phonemes, whereas the dyslexia population shows the opposite pattern. (PsycINFO Database Record (c) 2006 APA, all rights reserved).

Original languageEnglish
Pages (from-to)854-867
Number of pages14
JournalJournal of Educational Psychology
Volume98
Issue number4
DOIs
StatePublished - 1 Nov 2006

Keywords

  • Developmental dyscalculia
  • Developmental dyslexia
  • Numerals
  • Phonemes
  • Quantities

ASJC Scopus subject areas

  • Education
  • Developmental and Educational Psychology

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