Psikhologicheskie Issledovaniya • ISSN 2075-7999
peer-reviewed • open access journal
      

 

Chertkova Yu.D., Egorova M.S. Sex differences in mathematical abilities

Full text in Russian: Черткова Ю.Д., Егорова М.С. Половые различия в математических способностях
Lomonosov Moscow State University, Moscow, Russia

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Sex differences in mathematical abilities evaluated based on the results of Unified State Examination in mathematics were analyzed. The subjects were 11577 twin pairs who passed through Unified State Examination in mathematics in 2010, 2011, 2012. The sample is representative to Russian Federation twin population of these age cohorts. Differences in mean values and variances and weighted effect size (d) (difference in average scores between boys and girls divided by boys and girls group averaged standard deviation) were evaluated in order to determine sex differences. The main results are as follows: 1. Girls scored lower than boys, on average, in mathematics, but differences were small and significant only for one age cohort (for those who graduated in 2011). The weighted effect sizes (d) for three age cohorts were 0,027, 0,078, 0,028 which represented a negligible gender difference. 2. Boys are slightly more variable, than girls for this measure of mathematical abilities. 3. Girls from opposite-sex twin pairs were better in mathematics, as compared with the girls from same-sex twin pairs (both dizygotic and monozygotic). The findings support assumption that masculinizing hormone (prenatal testosterone) affects sex differences.

Keywords: sex differences, mathematical abilities, prenatal testosterone

 

Funding
The study was supported by the Russian Foundation for Humanities, project 12-06-00790


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Received 22 June. Date of publication: 31 October 2013.

About authors

Chertkova Yulia D. Ph.D., Assistant Professor, Department of Behavioral Genetics, Faculty of Psychology, Lomonosov Moscow State University, ul. Mokhovaya, 11, str. 9, 125009 Moscow, Russia.
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Egorova Marina S. Ph.D., Professor, Corresponding Member, Russian Academy of Education; Head, Department of Behavioral Genetics, Faculty of Psychology, Lomonosov Moscow State University, ul. Mokhovaya, 11, str. 9, 125009 Moscow, Russia.
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Suggested citation

Chertkova Y.D., Egorova M.S. Sex differences in mathematical abilities. Psikhologicheskie Issledovaniya, 2013, Vol. 6, No. 31, p. 12. http://psystudy.ru (in Russian, abstr. in English).

Permanent URL: http://psystudy.ru/index.php/eng/108-v6n31e/902-chertkova31e.html

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