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Cited by 236

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Explaining the Relation Between Birth Order and Intelligence

Kristensen, Petter, Bjerkedal, Tor·2007·Science

Abstract

Negative associations between birth order and intelligence level have been found in numerous studies. The explanation for this relation is not clear, and several hypotheses have been suggested. One family of hypotheses suggests that the relation is due to more-favorable family interaction and stimulation of low-birth-order children, whereas others claim that the effect is caused by prenatal gestational factors. We show that intelligence quotient (IQ) score levels among nearly 250,000 military conscripts were dependent on social rank in the family and not on birth order as such, providing support for a family interaction explanation.

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Metadata

Authors
Kristensen, P., & Bjerkedal, T.
Venue
Science
Published
2007-06-22
Volume
316
Issue
5832
Pages
1717-1717
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2031346513
Cited by
236
References
0
FWCI
17.52
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Explaining the Relation Between Birth Order and Intelligence. https://app.cochat.ai/papers/10.1126/science.1141493
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Kristensen, P., & Bjerkedal, T. (2007). Explaining the Relation Between Birth Order and Intelligence. Science. https://doi.org/10.1126/science.1141493

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.