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Search 3,721 documents across 34 fields — every claim tier-rated by evidence

3,721 Documents 34 Sections 43,625 Citations 34,852 Keywords Indexed 4 Evidence Tiers

3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.

12 results for "altruism"

R_5_19 Verified Biology & Evolution

R_5_19 — Evolutionary Game Theory: Cooperation, Altruism, and Strategy in Nature

Evolutionary game theory applies mathematical game theory to biological evolution, explaining how natural selection favors strategies for survival and reproduction in competitive and cooperative interactions. The field's

evolutionary game theory prisoner's dilemma tit for tat altruism kin selection reciprocity
ZE_5_13 Verified Ethics & Applied Philosophy

ZE_5_13 — Ethics of Charity and Philanthropy: Effective Altruism and Duty to Give

The ethics of charity and philanthropy interrogates the moral obligations of the wealthy toward the poor, the effectiveness and legitimacy of charitable giving as a response to poverty, and the emerging movement of effec

charity philanthropy effective altruism Singer duty to give aid
R_3_06 Verified Biology & Evolution

R_3_06 — Altruism and Cooperation in Nature

Altruism — behavior that reduces the actor's fitness while increasing the recipient's — presents a fundamental puzzle for evolutionary theory: how can natural selection favor genes that reduce their bearer's reproduction

altruism cooperation kin selection Hamilton reciprocal altruism Trivers
ZB_3_09 Verified Ecology & Biology

ZB_3_09 — Mutualism and Cooperation in Nature

Mutualism — an interspecific interaction in which both partners benefit — is one of the most important ecological relationships on Earth, underpinning ecosystem function from coral reefs to forests to the human gut. The

mutualism symbiosis cooperation reciprocal altruism cleaner fish mycorrhiza
T_4_15 Credible Psychology & Social

T_4_15 — The Psychology of Cooperation and Trust: Game Theory, Reciprocity, and Institutions

Cooperation — acting in ways that benefit others at a cost to oneself — is both theoretically puzzling (why would natural selection favor organisms that sacrifice fitness for others?) and practically essential (every hum

cooperation trust game theory prisoner's dilemma reciprocity altruism
T_1_02 Verified Psychology & Social

T_1_02 — Evolutionary Psychology — The Adapted Mind

Evolutionary psychology applies Darwinian natural and sexual selection to the human mind, proposing that cognitive mechanisms evolved as functional adaptations to recurrent problems faced by ancestral hunter-gatherers in

evolutionary psychology adapted mind modular mind Tooby Cosmides EEA
P_2_09 Verified Philosophy & Meaning

P_2_09 — Cosmopolitanism and Global Ethics

Cosmopolitanism — from the Greek kosmopolitēs ("citizen of the world") — is the philosophical tradition asserting that all human beings belong to a single moral community regardless of nationality, ethnicity, or culture.

cosmopolitanism global ethics global justice world citizen Kant perpetual peace
P_2_10 Verified Philosophy & Meaning

P_2_10 — Utilitarianism: Bentham, Mill, Singer, and Consequentialist Ethics

Utilitarianism is the ethical theory that the morally right action in any situation is the one that produces the greatest overall happiness (or well-being, or preference satisfaction) for the greatest number of those aff

utilitarianism Bentham Jeremy Bentham John Stuart Mill Peter Singer consequentialism
ZE_4_13 Verified Ethics & Applied Philosophy

ZE_4_13 — Ethics of Wealth and Poverty: Rawls, Nozick, Singer, and Distributive Justice

The ethics of wealth and poverty asks one of the most consequential moral questions: What do the affluent owe the poor? And, more broadly, what constitutes a just distribution of resources? Three towering 20th-century ph

distributive justice wealth poverty Rawls Nozick Singer
ZE_1_05 Verified Ethics & Applied Philosophy

ZE_1_05 — Utilitarianism and Consequentialism

Consequentialism is the family of ethical theories holding that the moral rightness of an action depends entirely on its consequences — what matters is the outcome, not the motive or the nature of the act itself. Utilita

utilitarianism consequentialism Bentham Mill Singer greatest happiness principle
ZE_1_10 Verified Ethics & Applied Philosophy

ZE_1_10 — Moral Psychology and Development

Moral psychology investigates how humans actually make moral judgments, develop moral capacities, and experience moral emotions — bridging empirical research and philosophical ethics. Developmental approaches: Jean Piage

moral psychology moral development Kohlberg Piaget Gilligan moral reasoning
R_5_04 Verified Biology & Evolution

R_5_04 — Eusociality: Ants, Bees, and Termites

Eusociality — the highest level of social organization in the animal kingdom, characterized by reproductive division of labor (some individuals forgo reproduction to help others reproduce), cooperative brood care, and ov

eusociality kin selection inclusive fitness Hamilton's rule haplodiploidy superorganism