Sex differences in arithmetical performance scores: Central tendency and variability |
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| Authors: | R Martens PPM Hurks C Meijs R Wassenberg J Jolles |
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| Institution: | aFaculty of Psychology and Neuroscience, Maastricht University, P.O. Box 616, NL — 6200 MD, Maastricht, The Netherlands;bRuud de Moor Center, Open University, P.O. Box 2960, NL — 6401 DL, Heerlen, The Netherlands;cDepartment of Psychiatry and Psychology, Maastricht University Medical Center, P.O. Box 5800, NL — 6202 AZ, Maastricht, The Netherlands;dFaculty of Psychology & Education, VU University Amsterdam, Van der Boechorststraat 1, NL — 1081 BT, Amsterdam, The Netherlands |
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| Abstract: | The present study aimed to analyze sex differences in arithmetical performance in a large-scale sample of 390 children (193 boys) frequenting grades 1–9. Past research in this field has focused primarily on average performance, implicitly assuming homogeneity of variance, for which support is scarce. This article examined sex differences in arithmetical operations (addition, subtraction, multiplication and division) in central tendency and variability. Central tendency analyses revealed a male advantage, predominantly in addition and subtraction, from grade 6 onward. Variability analyses showed that sex differences were largest among higher achievers and absent among lower achievers. Thus, central tendency and variability analyses provide complementary information on sex differences in arithmetical performance. In conclusion, sex differences in arithmetical performance exist, but depend on the studied arithmetical operation, age group and achievement level. The present study thereby offers new directions for future research by indicating the need for a broader perspective on sex differences. |
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| Keywords: | Arithmetical abilities Sex differences in development Central tendency Variability Precociousness |
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