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Supplemental Information

Table S1: Variables

Table S1 - Detailed summary of variables used in the study

DOI: 10.7287/peerj.preprints.1802v2/supp-1

Table S2 - Data

Table S2 - Data. Column headings: (a) Frequent Interpersonal Violence; (b) Warriors Have Prestige; (c) Wives Taken From Hostile Groups; (d) Male Scarification; (e) Beliefs and Behaviour Related to Male Aggression (1st PCA of A-D); (f) Polygyny; (g) Wives (Mean): Upper 50th %ile; (h) Wives (Median): Upper 50th %ile; (i) Sex Ratio: Upper 50th %ile; (j) Male War Mortality; (k) Males Expend Subsistence Effort; (l) Frequent Warfare; (m) Political Complexity; and, (n) Region

DOI: 10.7287/peerj.preprints.1802v2/supp-2

Table S3: Correlations

Table S3 - Tetrachoric correlations amongst predictors of interest. We could not calculate the correlation between the two polygyny predictors because there are no cases of non-polygynous societies in the upper 50th %ile for variance in number of wives

DOI: 10.7287/peerj.preprints.1802v2/supp-3

Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Tara-Lyn Carter analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Geoff Kushnick conceived and designed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Data Deposition

The following information was supplied regarding data availability:

The raw data has been supplied in supplementary Table S2.


The authors received no funding for this work.

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