Social Dilemmas

Social dilemmas examine why people or agents may choose actions that benefit themselves but harm a group, as in public-goods games and shared-resource commons. Researchers study cooperation using evolutionary game theory, policy-gradient and multi-agent reinforcement learning, and mechanisms such as reputation, mediation, contracts, rewards, and punishment. Benchmarks include the Iterated Prisoner’s Dilemma and sequential environments such as Cleanup and Harvest, where agents must coordinate over repeated interactions and scarce resources. Cooperation can emerge through incentives, trust, or communication, but remains fragile when partners change, resources are scarce, or agents misread intentions; strategies that raise cooperation do not always maximize social welfare.