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1 results

  • Symbolic and Non-Symbolic Number Magnitude Processing in Children with Developmental Dyscalculia

  • Danilka Castro Cañizares, Vivian Reigosa Crespo, Eduardo González Alemañy
  • Journal:
    The Spanish Journal of Psychology / Volume 15 / Issue 3 / November 2012
    Published online by Cambridge University Press:
    10 January 2013, pp. 952-966

  • The aim of this study was to evaluate if children with Developmental Dyscalculia (DD) exhibit a general deficit in magnitude representations or a specific deficit in the connection of symbolic representations with the corresponding analogous magnitudes. DD was diagnosed using a timed arithmetic task. The experimental magnitude comparison tasks were presented in non-symbolic and symbolic formats. DD and typically developing (TD) children showed similar numerical distance and size congruity effects. However, DD children performed significantly slower in the symbolic task. These results are consistent with the access deficit hypothesis, according to which DD children's deficits are caused by difficulties accessing magnitude information from numerical symbols rather than in processing numerosities per se.