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Number Processing and Calculation in Brazilian Children Aged 7-12 Years

  • Flávia Heloísa Dos Santos (a1), Paulo Adilson Da Silva (a1), Fabiana Silva Ribeiro (a1), Ana Luiza Ribeiro Pereira Dias (a1), Michele Cândida Frigério (a1), Georges Dellatolas (a2) and Michael von Aster (a3)...

Abstract

Numerical cognition is based on two components - number processing and calculation. Its development is influenced by biological, cognitive, educational, and cultural factors. The objectives of the present study were to: i) assess number processing and calculation in Brazilian children aged 7-12 years from public schools using the Zareki-R (Battery of neuropsychological tests for number processing and calculation in children, Revised; von Aster & Dellatolas, 2006) in order to obtain normative data for Portuguese speakers; ii) identify how environment, age, and gender influences the development of these mathematical skills; iii) investigate the construct validity of the Zareki-R by the contrast with the Arithmetic subtest of WISC-III. The sample included 172 children, both genders, divided in two groups: urban (N = 119) and rural (N = 53) assessed by the Zareki-R. Rural children presented lower scores in one aspect of number processing; children aged 7-8 years demonstrated an inferior global score than older; boys presented a superior performance in both number processing and calculation. Construct validity of Zareki-R was demonstrated by high to moderate correlations with Arithmetic subtest of WISC-III. The Zareki-R therefore is a suitable instrument to assess the development of mathematical skills, which is influenced by factors such as environment, age, and gender.

La cognición numérica se basa en dos componentes: el procesamiento numérico y el cálculo. Su desarrollo está influenciado por factores biológicos, cognitivos, educativos, y culturales. Los objetivos del presente trabajo fueron: a) evaluar el procesamiento numérico y el cálculo en niños brasileños de entre 7-12 años de escuelas públicas utilizando el Zareki-R (batería de pruebas neuropsicológicas para el procesamiento numérico y el cálculo en niños, revisada por von Aster y Dellatolas, 2006) con el fin de obtener datos normativos para los hablantes de portugués, b) determinar cómo el medio ambiente, la edad y el género influyen en el desarrollo de estas habilidades matemáticas, y c) investigar la validez de constructo del Zareki-R en contraste con el subtest de Aritmética WISC-III. La muestra incluyó a 172 niños evaluados por el Zareki-R, niños de ambos sexos, divididos en dos grupos: urbano (N = 119) y rural (N = 53). Los niños de origen rural presentaron puntuaciones más bajas en un aspecto de procesamiento numérico, los niños de 7-8 años demostraron una puntuación inferior global que los mayores; los varones presentaron un rendimiento superior tanto en el procesamiento numérico como en el cálculo. La validez del constructo del Zareki-R fue demostrada por las correlaciones de alta a moderada con el subtest de Aritmética WISC-III. El Zareki-R por lo tanto, es un instrumento adecuado para evaluar el desarrollo de habilidades matemáticas, que está influenciado por factores como el medio ambiente, la edad y el género.

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Corresponding author

Correspondence concerning this article should be addressed to Flávia Heloísa Dos Santos. Universidade Estadual Paulista, UNESP/Assis. Laboratório de Neuropsicologia. Programa de Pós-Graduação em Psicologia. Departamento de Psicologia Experimental e do Trabalho. Avenida Dom Antônio 2100 - cep 19806-900, Assis - SP, (Brazil). Phone: + 55-18-33025902. Fax: + 55-18-33025804; E-mail: flaviahs@assis.unesp.br

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Number Processing and Calculation in Brazilian Children Aged 7-12 Years

  • Flávia Heloísa Dos Santos (a1), Paulo Adilson Da Silva (a1), Fabiana Silva Ribeiro (a1), Ana Luiza Ribeiro Pereira Dias (a1), Michele Cândida Frigério (a1), Georges Dellatolas (a2) and Michael von Aster (a3)...

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