| Big and tall soldiers are more likely to survive battle: a possible explanation for the 'returning soldier effect' on the secondary sex ratio. | |
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MedLine Citation:
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PMID: 17884803 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: It is widely known that more boys are born during and immediately after wars, but there has not been any ultimate (evolutionary) explanation for this 'returning soldier effect'. Here, I suggest that the higher sex ratios during and immediately after wars might be a byproduct of the fact that taller soldiers are more likely to survive battle and that taller parents are more likely to have sons. METHODS: I analyze a large sample of British Army service records during World War I. RESULTS: Surviving soldiers were on average more than one inch (3.33 cm) taller than fallen soldiers. CONCLUSIONS: Conservative estimates suggest that the one-inch height advantage alone is more than twice as sufficient to account for all the excess boys born in the UK during and after World War I. While it remains unclear why taller soldiers are more likely to survive battle, I predict that the returning soldier effect will not happen in more recent and future wars. |
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Authors:
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Satoshi Kanazawa |
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Publication Detail:
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Type: Journal Article Date: 2007-09-20 |
Journal Detail:
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Title: Human reproduction (Oxford, England) Volume: 22 ISSN: 0268-1161 ISO Abbreviation: Hum. Reprod. Publication Date: 2007 Nov |
Date Detail:
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Created Date: 2007-10-17 Completed Date: 2008-05-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8701199 Medline TA: Hum Reprod Country: England |
Other Details:
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Languages: eng Pagination: 3002-8 Citation Subset: IM |
Affiliation:
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Interdisciplinary Institute of Management, London School of Economics and Political Science, London, UK. s.kanazawa@lse.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Body Height* Female Forecasting Great Britain Humans Male Military Personnel Models, Theoretical Odds Ratio Sex Ratio Survivors War World War I |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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