Evidence map›Paper›PMID 30111597›Full record

ArticleProceedings. Biological sciences2018

Why war is a man's game.

Alberto J C Micheletti, Graeme D Ruxton, Andy Gardner

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed.

  1. Sex Biases in Patterns of Parental Investment.Human nature (Hawthorne, N.Y.) · 2026
    Article
  2. Article
  3. Identifying Opponent's Neuroticism Based on Behavior in Wargame.Behavioral sciences (Basel, Switzerland) · 2025
    Article
  4. Article
  5. Wartime forced sex as a male mating strategy.Theory in biosciences = Theorie in den Biowissenschaften · 2023
    Article
  6. Culture and group-functional punishment behaviour.Evolutionary human sciences · 2022
    Article
  7. Article
  8. The evolution of altruism through war is highly sensitive to population structure and to civilian and fighter mortality.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  9. Cultural extinction in evolutionary perspective.Evolutionary human sciences · 2021
    Review
  10. Article
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Alberto J C MichelettiSchool of Biology, University of St Andrews, Dyers Brae, St Andrews KY16 9TH, UK ajcm2@st-andrews.ac.uk.ORCID 0000-0001-7062-2655
Graeme D RuxtonSchool of Biology, University of St Andrews, Dyers Brae, St Andrews KY16 9TH, UK.ORCID 0000-0001-8943-6609
Andy GardnerSchool of Biology, University of St Andrews, Dyers Brae, St Andrews KY16 9TH, UK.ORCID 0000-0002-1304-3734

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Interest in the evolutionary origins and drivers of warfare in ancient and contemporary small-scale human societies has greatly increased in the last decade, and has been particularly spurred by exciting archaeological discoveries that suggest our ancestors led more violent lives than previously documented. However, the striking observation that warfare is an almost-exclusively male activity remains unexplained. Three general hypotheses have been proposed, concerning greater male effectiveness in warfare, lower male costs, and patrilocality. But while each of these factors might explain why warfare is more common in men, they do not convincingly explain why women almost never participate. Here, we develop a mathematical model to formally assess these hypotheses. Surprisingly, we find that exclusively male warfare may evolve even in the absence of any such sex differences, though sex biases in these parameters can make this evolutionary outcome more likely. The qualitative observation that participation in warfare is almost exclusive to one sex is ultimately explained by the fundamentally sex-specific nature of Darwinian competition-in fitness terms, men compete with men and women with women. These results reveal a potentially key role for ancestral conditions in shaping our species' patterns of sexual division of labour and violence-related adaptations and behavioural disorders.

Indexed as

AggressionGenetic FitnessWarfareFemaleHumansMaleModels, BiologicalSex Characteristicsbehavioural disorderscompetitionhysteresissex differencesviolencewar

Identifiers

PMID30111597
PMCPMC6111185

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.