Human cooperation in groups: variation begets variation.

Sci Rep · 2015 · PMC4632011 · PMID 26531770

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highly significantno p-value reported

In these cases, contributions of individuals that positively responded to heterogeneity were respectively 50% and 40% higher than those of individuals that responded negatively; those differences were highly significant in both cases (See Supplementary Information, section 2 for graphic representations and details).

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