Greater Male Variability in Cooperation: Meta-Analytic Evidence for an Evolutionary Perspective

  title={Greater Male Variability in Cooperation: Meta-Analytic Evidence for an Evolutionary Perspective},
  author={Christian Th{\"o}ni and Stefan Volk and Jose M. Cortina},
  journal={Psychological Science},
  pages={50 - 63}
Do men and women differ systematically in their cooperation behaviors? Researchers have long grappled with this question, and studies have returned equivocal results. We developed an evolutionary perspective according to which men are characterized by greater intrasex variability in cooperation as a result of sex-differentiated psychological adaptations. We tested our hypothesis in two meta-analyses. The first involved the raw data of 40 samples from 23 social-dilemma studies with 8,123… 

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