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Numerical and arithmetical deficits in learning-disabled children : Relation to dyscalculia and dyslexia
GEARY DC; HOARD MK
APHASIOLOGY , 2001, vol. 15, n° 7, p. 635-647 Doc n°: 102318 Localisation : Documentation IRR Descripteurs : AD6 - MANIFESTATIONS NEUROCOMPORTEMENTALES - FONCTIONS COGNITIVES Based on the stability and level of performance on standard achievement tests in first and second grade (mean age in first grade = 82 months), children with IQ scores in the low-average to high-average range were classified as learning disabled (LD) in mathematics (MD), reading (RD), or both (MD/RD). These children (n = 42), a group of children who showed variable achievement test performance across grades (n = 16), and a control group of academically normal peers (n = 35) were administered a series of experimental and psychometric tasks. The tasks assessed number comprehension and production skills, counting knowledge, arithmetic skills, working memory, the ease of activation of phonetic representations of words and numbers, and spatial abilities. The children with variable achievement test performance did not differ from the academically normal children in any cognitive domain, whereas the children in the LD groups showed specific patterns of cognitive deficit, above and beyond the influence of IQ. Discussion focuses on the similarities and differences across the groups of LD children. Langue : ANGLAIS Tiré à part : OUI Identifiant basis : 2001218274 |
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