Santos, Flávia Heloísa dos [UNESP]Da Silva, Paulo AdilsonRibeiro, Fabiana SilvaRibeiro Pereira Dias, Ana LuizaFrigerio, Michele CandidaDellatolas, Georgesvon Aster, Michael2014-05-202014-05-202012-07-01Spanish Journal of Psychology. Madrid: Univ Complutense Madrid, Servicio Publicaciones, v. 15, n. 2, p. 513-525, 2012.1138-7416http://hdl.handle.net/11449/6630Numerical 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.513-525engZareki-Rmathematical skillschildrenneuropsychological assessmentarithmeticArtigo10.5209/rev_SJOP.2012.v15.n2.38862WOS:000305345400007Acesso abertoWOS000305345400007.pdf