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Showing 1–6 of 6 results
Advanced filters: Author: Urs Fischbacher Clear advanced filters

  • Punishment experiments with indigenous groups in Papua New Guinea demonstrate that altruistic norm compliance and norm enforcement are strongly influenced by favouritism within ethnic, racial, or language groups. The parochial patterns of human altruism constitute a challenge for existing evolutionary theories.

    • Helen Bernhard
    • Urs Fischbacher
    • Ernst Fehr
    Research
    Nature
    Volume: 442, P: 912-915

  • A genetic study identifies hundreds of loci associated with risk tolerance and risky behaviors, finds evidence of substantial shared genetic influences across these phenotypes, and implicates genes involved in neurotransmission.

    • Richard Karlsson Linnér
    • Pietro Biroli
    • Jonathan P. Beauchamp
    Research
    Nature Genetics
    Volume: 51, P: 245-257

  • Models show that human cooperation cannot evolve reliably under repeated interactions or under intergroup competitions, but combining the two mechanisms predicts a distinctive strategy, observed experimentally in Papua New Guinea, in which individuals exhibit cooperative reciprocity with ingroup partners and uncooperative reciprocity with outgroup partners.

    • Charles Efferson
    • Helen Bernhard
    • Ernst Fehr
    ResearchOpen Access
    Nature
    Volume: 626, P: 1034-1041