Memory abilities in children with subtypes of dyscalculia |
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Authors: | Rosselli Mónica Matute Esmeralda Pinto Noemí Ardila Alfredo |
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Affiliation: | a Department of Psychology, Florida Atlantic University, Davie.b Institute of Neuroscience, University of Guadalajara, Mexico.c Department of Communication Sciences and Disorders, Florida International University, Miami. |
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Abstract: | This study examines (a) mathematical skills of 2 subgroups of children with developmental dyscalculia (DD)—1 group with DD only and a second group with DD plus reading disorders (RDD)—and (b) analyzes the memory skills of both groups of children. Fifty 11- and 12-year-old children were selected from public schools in Guadalajara, Mexico. Seventeen children had DD only, 13 had RDD, and 20 were normal controls. Testing included 10 calculation and 6 memory subtests taken from the Evaluacion Neuropsicologica Infantil (Matute, Rosselli, Ardila, & Ostrosky, in press). Results indicated that children with DD and children with RDD show a similar pattern of mathematical impairment. Both subgroups had significantly lower scores than the control group in working memory tasks. In addition, the RDD group had significantly lower scores than the control group in visual learning and semantic memory. Although the RDD group scored lower than the DD group in most memory tests, this difference did not reach significance. Working memory tests (digits backwards and sentence repetition) appeared to be the best predictors of mathematical test scores and may represent a major cognitive defect in children with specific defects in mathematics. |
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