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Tosto MG, Petrill SA, Halberda J, et al. Why do we differ in number sense? Evidence from a genetically sensitive investigation. Intelligence. 2014;43(100):35-46doi: 10.1016/j.intell.2013.12.007.
Tosto, M. G., Petrill, S. A., Halberda, J., Trzaskowski, M., Tikhomirova, T. N., Bogdanova, O. Y., Ly, R., Wilmer, J. B., Naiman, D. Q., Germine, L., Plomin, R., & Kovas, Y. (2014). Why do we differ in number sense? Evidence from a genetically sensitive investigation. Intelligence, 43(100), 35-46. https://doi.org/10.1016/j.intell.2013.12.007
Tosto, M G, et al. "Why do we differ in number sense? Evidence from a genetically sensitive investigation." Intelligence vol. 43,100 (2014): 35-46. doi: https://doi.org/10.1016/j.intell.2013.12.007
Tosto MG, Petrill SA, Halberda J, Trzaskowski M, Tikhomirova TN, Bogdanova OY, Ly R, Wilmer JB, Naiman DQ, Germine L, Plomin R, Kovas Y. Why do we differ in number sense? Evidence from a genetically sensitive investigation. Intelligence. 2014 Mar;43(100):35-46. doi: 10.1016/j.intell.2013.12.007. PMID: 24696527; PMCID: PMC3969293.
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Intelligence. 2014 Mar;43(100):35-46. doi: 10.1016/j.intell.2013.12.007.

Why do we differ in number sense? Evidence from a genetically sensitive investigation.

Intelligence

M G Tosto, S A Petrill, J Halberda, M Trzaskowski, T N Tikhomirova, O Y Bogdanova, R Ly, J B Wilmer, D Q Naiman, L Germine, R Plomin, Y Kovas

Affiliations

  1. Department of Psychology, University of York, Heslington, York YO10 5DD, United Kingdom ; Department of Psychology, Tomsk State University, 36 Lenin Prospekt, 634050, Tomsk, Russia.
  2. The Ohio State University, Columbus, OH 43210, United States.
  3. Department of Psychological and Brain Sciences, The Johns Hopkins University, Baltimore, MD 21218-268, United States.
  4. King's College London, MRC Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, De Crespigny Park, London SE5 8AF, United Kingdom.
  5. Department of Psychology, Tomsk State University, 36 Lenin Prospekt, 634050, Tomsk, Russia.
  6. Department of Psychology, Wellesley College, Central Street, Wellesley, MA 02481, United States.
  7. Center for Human Genetic Research, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, United States.
  8. Department of Psychology, Tomsk State University, 36 Lenin Prospekt, 634050, Tomsk, Russia ; King's College London, MRC Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, De Crespigny Park, London SE5 8AF, United Kingdom ; Goldsmiths, University of London, London SE14 6NW, United Kingdom.

PMID: 24696527 PMCID: PMC3969293 DOI: 10.1016/j.intell.2013.12.007

Abstract

Basic intellectual abilities of quantity and numerosity estimation have been detected across animal species. Such abilities are referred to as 'number sense'. For human species, individual differences in number sense are detectable early in life, persist in later development, and relate to general intelligence. The origins of these individual differences are unknown. To address this question, we conducted the first large-scale genetically sensitive investigation of number sense, assessing numerosity discrimination abilities in 837 pairs of monozygotic and 1422 pairs of dizygotic 16-year-old twin pairs. Univariate genetic analysis of the twin data revealed that number sense is modestly heritable (32%), with individual differences being largely explained by non-shared environmental influences (68%) and no contribution from shared environmental factors. Sex-Limitation model fitting revealed no differences between males and females in the etiology of individual differences in number sense abilities. We also carried out

Keywords: Behaviour genetics; Directional selection; Heritability; Mathematical ability; Number sense

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