Human cooperation scales with genetic relatedness under Hamilton’s rule

Evidence

First is kin selection. Hamilton’s rule specifies that genetically related individuals cooperate with each other—and by doing so favor the spread of their shared genes. From social insects to social apes, individuals help others to the degree to which the recipient and the helper are related and the benefits of helping outweigh its costs. This logic also applies to us humans. It should come as no surprise to you that, the world over, a large share of blood, body organs, money, food, and time, are donated between close family members in a manner proportional to the degree of genetic relatedness. — Norenzayan, Ara, Big gods - how religion transformed…, 32

Categorization

• DEFINE: States Hamilton’s rule as the kin-selection baseline that Big God and partner-choice religion must supersede.
• XREF: connects to: Kin selection explains cooperation only among genetically related relatives; Kinship and reciprocity alone cannot explain large-scale human cooperation — Norenzayan, Ara, Big gods - how religion transformed…, 648; Genetic relatedness predicts how much humans help one another. — Norenzayan, Ara, Big gods - how religion transformed…, 32 (+2 more)
• yield-rescued: below the book’s yield-target cutoff, included anyway for connecting to: Kin selection explains cooperation only among genetically related relatives; Kinship and reciprocity alone cannot explain large-scale human cooperation — Norenzayan, Ara, Big gods - how religion transformed…, 648; Genetic relatedness predicts how much humans help one another. — Norenzayan, Ara, Big gods - how religion transformed…, 32 (+2 more)

Broader Connections

• Genetic relatedness predicts how much humans help one another. #corroborates (0.93) — Norenzayan, Ara, Big gods - how religion transformed…, 32
• Kinship and reciprocity alone cannot explain large-scale human cooperation #complicates (0.78) — Norenzayan, Ara, Big gods - how religion transformed…, 648
• Rising stakes and nonrandom relationships drive cooperation toward structured social groups #complicates (0.72) — Russell Hardin, Trust and Trustworthiness, 631