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Game theory and mechanism design

Game theory and mechanism design study strategic interaction among decision makers and the design of rules that lead to desired outcomes. They explain cooperation, free riding and incentives in shared-risk settings. Policy Nexus stewards this page for the Nexus Consortium.

02The method

What game theory and mechanism design covers.

  1. 01

    Core methods

    non-cooperative game analysis; cooperative game analysis; mechanism and auction design; bargaining models; evolutionary game theory; experimental games.

  2. 02

    Data and instruments

    laboratory experiments; field behaviour data; negotiation records; market and auction data; institutional rule sets.

  3. 03

    Validation

    Predictions are tested through laboratory and field experiments and comparison with observed behaviour. Mechanism designs are piloted before scaling.

  4. 04

    Limits

    Assumptions of rationality and common knowledge often fail. Real settings involve many players and incomplete information.

  5. 05

    Use in risk decisions

    Game theory clarifies why actors underinvest in shared risk reduction and how agreements can be made self-enforcing. It informs the design of risk pools, treaties and incentive schemes.

03Reference practice

Game theory informs institutional design and negotiation analysis.

ReferenceWhat it sets
Mechanism designRules that align incentives
Transboundary water and climate negotiation analysisCooperation problems
OECD risk governance workCoordination of actors
04In systemic risk work

Why rational actors under-invest in shared resilience.

Systemic resilience is partly a public good: each actor benefits from others' investment. Game theory explains under-investment and designs mechanisms (pooling, standards, contracts) that change incentives. It is a tool for understanding, not a prediction of behaviour.

  • State assumptions about information and rationality.
  • Test mechanisms with experiments where possible.
  • Consider power asymmetries.
06Stewardship

Who maintains this page.

Policy Nexus stewards game theory and mechanism design: it keeps this description current and reviews how the method is applied across the platforms.

07Sources

Where this page's references lead.

The bodies and documents this page is read against. Status and editions change; each link goes to the issuing body.

09Questions

Questions and answers.

Why does one institution host every method page?
GCRI hosts the STEM Commons so that each method has one canonical description. Platforms link to it rather than repeat it, which keeps definitions consistent.
How do I suggest a correction to a method page?
Write to integrity@therisk.global with the passage and the reason.
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