2004
DOI: 10.1177/00222194040370050201
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An Epidemiological Study of Number Processing and Mental Calculation in Greek Schoolchildren

Abstract: The aim of this study was to validate and standardize an instrument for the diagnosis of developmental dyscalculia (mathematics disorder) in a Greek population and to obtain relevant epidemiological data. We used the Neuropsychological Test Battery for Number Processing and Calculation in Children (NUCALC) in a community sample of 240 students ages 7 to 11 years from urban and rural schools. There were no differences between genders in arithmetical performance; however, the effects of grade and socioeconomic l… Show more

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Cited by 58 publications
(43 citation statements)
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References 27 publications
(54 reference statements)
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“…Koumoula et al 15 assessed the urban and rural population in Greece and found a much greater prevalence in rural areas. This finding is compatible with the sample of the present study.…”
Section: Discussionmentioning
confidence: 99%
“…Koumoula et al 15 assessed the urban and rural population in Greece and found a much greater prevalence in rural areas. This finding is compatible with the sample of the present study.…”
Section: Discussionmentioning
confidence: 99%
“…Introduction Developmental Dyscalculia (DD) is characterized by difficulties to represent and manipulate numerical information nonverbally and visuospatially, in learning and remembering arithmetic facts and in executing arithmetic procedures . DD in children is relatively common, comparable to dyslexia, with a prevalence of 3 to 6% in the school aged population and with high rates of comorbidities, such as ADHD (Koumoula et al, 2004;Shalev, Auerbach, Manor, & Gross-Tsur, 2000). Yet little is known about the underlying deficits.…”
mentioning
confidence: 99%
“…Evidências genéticas, neuroanatômicas e epidemiológicas indicam que a DD é uma desordem de etiologia neurobiológica, embora fatores ambientais possam potencializar sua manifestação (Dellatolas & cols., 2000;Haskell, 2000;Rotzer & cols., 2009;Shalev, 2004;von Aster & Shalev, 2007). Sua prevalência varia de 3 -6,5%, afetando meninos e meninas nas mesmas proporções, contudo, a maioria dos casos de DD apresenta comorbidades, como a dislexia e o TDAH (Gross-Tsur & cols., 1996;Koumoula & cols., 2004;Lewis, Hitch, & Walker, 1994;Shalev, Auerbach, Manor, & Gross-Tsur, 2000;von Aster & cols., 2007). Além disso, estudos longitudinais mostraram que a DD é uma desordem persistente, se estendendo até além da adolescência (Shalev, Manor, Auerbach, & Gross-Tsur, 1998;Shalev, Manor, & Gross-Tsur, 2005).…”
Section: Pa Da Silva and Fh Dos Santosunclassified
“…O status socioeconômico das famílias mostrou ter influên-cia sobre o desempenho aritmético (Dellatolas & cols., 2000, Koumoula & cols., 2004. Em um estudo transcultural realizado no Brasil, Suíça e França, crianças brasileiras de menor nível socioeconômico apresentaram baixo desempenho em cálculo mental e em tarefas que envolviam o processamento de números na forma escrita: produção (ditado de números) e compreensão numérica (leitura e comparação de números) (Dellatolas & cols.…”
Section: Pa Da Silva and Fh Dos Santosunclassified
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