Abstract
We replicate the Stanford marshmallow experiment with a sample of 141 preschoolers and find a correlation between lack of self-control and 2D:4D digit ratio. Children with low 2D:4D digit ratio are less likely to delay gratification. Low 2D:4D digit ratio may indicate high fetal testosterone. If this hypothesis is true, our finding means high fetal testosterone children are less likely to delay gratification.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Child
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Child, Preschool
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Delay Discounting*
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Female
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Fetus / metabolism
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Fingers / anatomy & histology*
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Humans
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Male
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Testosterone / metabolism
Grants and funding
This work was supported by: BM: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, Brazil) PhD scholarship,
www.capes.gov.br. NDCJ: Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brazil),
www.cnpq.br. Grant Number: 304342/2009-2. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.