Automatic activation of internal magnitudes: a study of developmental dyscalculia.

  title={Automatic activation of internal magnitudes: a study of developmental dyscalculia.},
  author={Orly Rubinsten and Avishai Henik},
  volume={19 5},
The association between Arabic numerals and the representations of magnitude in adult developmental dyscalculia was examined. University students compared physical size, vertical positioning (height), or grayness (different shades of gray) of 2 Arabic numerals. The numerical values could produce a Stroop-like numerical congruity effect (NCE; 3-5 vs. 3-5). The dyscalculia group did not show NCE in the grayness task, and their physical comparisons produced a significantly smaller NCE compared… 

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