Risk appetite and tolerance setting
Boards and public bodies state their objectives, the outcomes they will not accept and the evidence that would trigger escalation, using structured elicitation so trade-offs are recorded rather than implied.
GRF · Governance Nexus
Decision analysis under uncertainty makes the choices of governing bodies explicit: the options, the objectives they trade off, the uncertainties and the values that decide. In governance work it supports risk appetite setting, mandate design and the question of when to act now and when to keep options open.
Decision analysis under uncertainty provides structured methods for choosing among options when outcomes are uncertain and objectives conflict. It makes trade-offs and value judgements explicit. In governance and institutions and risk management and systemic risk, decision analysis helps choose actions that perform acceptably across interconnected risks and uncertain futures. It clarifies when to act now and when to keep options open. The canonical description is on the STEM Commons.
Boards and public bodies state their objectives, the outcomes they will not accept and the evidence that would trigger escalation, using structured elicitation so trade-offs are recorded rather than implied.
Alternative designs for a regulator, council or coordination body are compared against criteria such as independence, competence, legitimacy and cost, with the weights and their sensitivity shown.
Reforms are sequenced as pathways with decision points and signposts, so governing bodies can commit to first steps while keeping later choices open as evidence arrives.
The screen a team would use to follow this method: its measures, states and decisions. Names are examples and values are illustrative.
Governance · Decision analysis for governing · Run R-4542
| Decisions recorded with reasons | Lognormal | of decisions, stated | expert elicitation |
| Conflicts declared | Lognormal | declarations, stated | expert elicitation |
| Board risk reviews held | Lognormal | reviews, stated | expert elicitation |
| Capture safeguards in place | Uniform | of 12, stated | expert elicitation |
Datasets and records used by decision analysis under uncertainty on this platform, with the role each plays and the label its values carry. Sources are listed in the source register.
| Data | Role | Label |
|---|---|---|
| Structured expert elicitation | Probabilities and judgements where records are thin | ESTIMATED |
| Stakeholder preference surveys | Weights on objectives | REPORTED |
| Records of comparable decisions | Reference classes for outcomes | Published statistics |
| Scenario sets | Range of futures for robustness testing | MODELLED |
The instruments, mandates, actors and accountability arrangements a policymaker, diplomat or development agency works with, citing the agreements that set them. Structures follow the frameworks named. Any state or progress drawn is illustrative, not a record.
The kinds of instrument available on decision analysis for governing bodies, by level of government and cooperation.
| Instrument type | Local | National | Regional | Global |
|---|---|---|---|---|
| Regulatory | Zoning, building codes | Laws, standards, licensing | Harmonised rules | Conventions and treaties |
| Economic | Local levies, grants | Budget lines, taxes, insurance schemes | Risk pools, regional funds | Financing mechanisms |
| Information | Local warnings | Disclosure, early warning, statistics | Data sharing arrangements | Global monitoring and reporting |
| Institutional | Local committees | Lead agencies, coordination councils | Regional bodies and secretariats | Multilateral mandates |
| Cooperative | Community agreements | Partnership compacts | Memoranda and joint programmes | Agreements and joint commitments |
Analyses are checked through sensitivity analysis, peer review and stakeholder scrutiny. Retrospective review compares decisions with outcomes.
| Check | How it is done |
|---|---|
| Sensitivity analysis | Weights and probabilities are varied to show which assumptions change the preferred option |
| Elicitation protocol | Experts are briefed, calibrated and asked independently before any group discussion |
| Retrospective review | Past decisions are compared with outcomes, separating poor judgement from bad luck |
Results depend on elicited probabilities and preferences that may be biased. Deep uncertainty can make expected value comparisons misleading.
Process explorer · Process
10 steps·4 stages
Process
In IPCC AR6 Working Group II, climate risk results from interactions between hazards and a system's exposure and vulnerability, and responses can add risk.
Outline of an external standard or method, from its public sources. It describes what the framework says, not a record of any run. It does not show that Nexus or any partner performs, certifies or approves a step. A gate is a step of the method, never a Nexus approval.
Systemic Risk Management stewards decision analysis under uncertainty for the Consortium and reviews how it is applied across platforms.
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