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Article de revue:
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Clé de citation BibTeX: Fink2006
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Fink, B., Brookes, H., Neave, N., Manning, J. T., & Geary, D. C. (2006). Second to fourth digit ratio and numerical competence in children. Brain and Cognition.
Ajoutée par: Sterenn Audo 2008-02-04 12:36:27
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Résumé
The ratio between the 2nd and 4th Wngers (2D:4D)—a potential proxy for prenatal testosterone (T) exposure—shows a sex diVerence,
with males usually having lower mean values; the latter potentially indicates higher prenatal T exposure. We studied relations between
2D:4D and competencies in the domains of counting, number knowledge, and visual-number representation in 73 children aged 6–11
years. SigniWcant negative correlations between numerical performance in all of these areas and right and left hand 2D:4D ratios were
found for boys but not girls. To the extent that 2D:4D ratios reXects prenatal exposure to T, the implications are (i) high prenatal T may
be associated with better performance on some basic numerical measures for boys, and (ii) prenatal exposure to T may aVect boys and
girls diVerently with respect to some numerical competencies.
2006 Published by Elsevier Inc.
Keywords: Digit ratio; Number; Counting; Mathematical abilities; Prenatal hormones; Testosterone
Ajoutée par: Sterenn Audo
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Idées
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Ajoutée par: Sterenn Audo
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