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Intelligence, birth order, and family size

Kanazawa, Satoshi (2012) Intelligence, birth order, and family size. Personality and Social Psychology Bulletin, 38 (9). pp. 1157-1164. ISSN 0146-1672

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Abstract

The analysis of the National Child Development Study in the United Kingdom (n = 17,419) replicates some earlier findings and shows that genuine within-family data are not necessary to make the apparent birth-order effect on intelligence disappear. Birth order is not associated with intelligence in between-family data once the number of siblings is statistically controlled. The analyses support the admixture hypothesis, which avers that the apparent birth-order effect on intelligence is an artifact of family size, and cast doubt on the confluence and resource dilution models, both of which claim that birth order has a causal influence on children’s cognitive development. The analyses suggest that birth order has no genuine causal effect on general intelligence.

Item Type: Article
Official URL: http://psp.sagepub.com/
Additional Information: © 2012 Society for Personality and Social Psychology
Library of Congress subject classification: B Philosophy. Psychology. Religion > BF Psychology
H Social Sciences > HQ The family. Marriage. Woman
Sets: Departments > Management
Research centres and groups > Managerial Economics and Strategy Group
Rights: http://www.lse.ac.uk/library/usingTheLibrary/academicSupport/OA/depositYourResearch.aspx
Date Deposited: 25 Jun 2012 13:59
URL: http://eprints.lse.ac.uk/44449/

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