2D:4D digit ratio predicts delay of gratification in preschoolers.
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- Record sourced from PubMed, PMID 25490040.
- Also identified by DOI 10.1371/journal.pone.0114394 and PMC identifier PMC3673180.
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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.