Developmental dyscalculia and basic numerical …

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Developmental dyscalculia and basic numericalcapacities: a study of 8 9-year-old studentsKarin Landerla,b, Anna Bevana, Brian Butterwortha,*aInstitute of Cognitive Neuroscience, University College London, 17 Queen Square, London WC1N 3AR, UKbDepartment of Psychology, University of Salzburg, Salzburg, AustriaReceived 21 March 2003; revised 17 September 2003; accepted 13 November 2003AbstractThirty-one 8- and 9-year-old children selected for dyscalculia , reading difficulties or both, werecompared to controls on a range of basic number processing tasks. Children with dyscalculia onlyhad impaired performance on the tasks despite high-average performance on tests of IQ, vocabularyand working memory tasks. Children with reading disability were mildly impaired only on tasks thatinvolved articulation, while children with both disorders showed a pattern of numerical disabilitysimilar to that of the dyscalculic group, with no special features consequent on their reading orlanguage deficits.

Developmental dyscalculia and basic numerical capacities: a study of 8–9-year-old students Karin Landerla,b, Anna Bevana, Brian Butterwortha,* aInstitute of Cognitive Neuroscience, University College London, 17 Queen Square, London WC1N 3AR, UK

  Basics, Developmental, Numerical, Capacities, Dyscalculia, Developmental dyscalculia and basic numerical, Developmental dyscalculia and basic numerical capacities