Welfare Economics & Utility Theory

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Abstractions about how economic value, welfare, and choice are modeled formally, including utility representations and preference structures (Leontief utilities, monotone preferences, multi-attribute utility), welfare and efficiency criteria (allocative efficiency, compensation principle, Atkinson index), and behavioral or strategic anomalies in decision-making (uncertainty effect, taste-based discrimination, signalling).

29 abstractions in this family — domain-specific abstractions that sit near one another in structural-signature space (k-means over structural-signature embeddings). Each is shown with its short description.

• Allocative efficiency — An economic state in which resources and output mix cannot be reallocated to make someone better off without making another worse off, often characterized under competitive assumptions by price equaling marginal cost.
• Atkinson index — An inequality measure equal to the proportional mean income society could forgo while retaining the same equally distributed equivalent welfare at a chosen inequality-aversion parameter.
• Budget-maximizing model — Niskanen's public-choice model in which a bureau's informational advantage lets a self-interested bureaucrat seek a budget and output above the socially efficient level.
• Compensation principle — A welfare-economic decision rule favoring a change when its gainers could hypothetically compensate its losers and still retain a gain.
• Considered purchase — A high-consequence buying decision involving enough financial, functional or emotional risk to motivate deliberate research, comparison and multi-person influence.
• Demerit good — A good judged to be overconsumed because consumers undervalue harms to themselves, motivating paternalistic taxation, regulation, or information policy.
• Discount function — Map delay to a present weight applied to future utility, payoff, or value, making timing assumptions explicit and distinguishing exponential consistency from nonexponential patterns.
• Economic opportunism — Self-interested economic conduct that exploits incomplete rules, information asymmetry or bargaining vulnerability through deception, strategic withholding or norm evasion.
• Economic value to the customer — A value-based pricing method that estimates the price ceiling from a customer's best alternative plus the monetary value of the focal offer's differentiating benefits.
• Expenditure cascades — A consumption spillover in which higher spending by top-income households raises local comparison standards and induces successive spending increases down the income distribution.
• Expenditure function — The minimum spending needed at given prices to attain a specified utility level.
• Friedman–Savage utility function — A wealth-dependent expected-utility curve with alternating concave and convex regions intended to explain simultaneous insurance purchase and lottery play.
• Intergenerational equity — A justice principle requiring benefits, burdens, opportunities and inherited resources to be assessed fairly across present and future generations.
• Intergenerational public procurement — Public purchasing that evaluates lifecycle impacts and the interests of future generations alongside present cost and delivery.
• Knightian uncertainty — Uncertainty about outcomes for which no well-grounded probability distribution is available, contrasted with measurable risk.
• Leontief utilities — A fixed-proportions utility model in which bundle value is the minimum of each good’s quantity divided by its required coefficient.
• Monotone preferences — Preferences under which having weakly more of every good and strictly more of a qualifying good is never worse or is strictly better.
• Multi-attribute utility — A utility representation assigning values to outcomes described by several attributes while encoding tradeoffs, interactions and uncertainty preferences.
• Non-convexity (economics) — An economic setting in which preferences, technologies or feasible sets violate convexity, allowing indivisibilities, increasing returns and multiple or unsupported competitive outcomes.
• Old-age-security hypothesis — A demographic-economic hypothesis that parents demand more children where adult offspring are expected to provide income, care and protection in old age, with pensions reducing that motive.
• Polytomous choice — A discrete-choice setting in which a decision maker selects among more than two mutually distinguished alternatives.
• Postmaterialism — Model a cohort-level shift in value priority from economic and physical security toward autonomy, self-expression, participation, equality, and quality-of-life goals under sustained formative security.
• Privileged group — A collective-action group containing at least one member whose private benefit from a public good exceeds the full cost of supplying it.
• Signalling (economics) — The strategic use of observable actions or attributes to convey credible information about otherwise hidden qualities in a market or game.
• Subjective theory of value — The economic theory that goods derive exchange-relevant value from agents’ marginal evaluations rather than inherent substance or embodied labor alone.
• Taste-based discrimination — An economic model in which decision makers accept a material cost to avoid interaction with a disliked group, producing unequal market outcomes unrelated to productivity.
• Uncertainty effect — A choice anomaly in which a known lottery is valued below its least valuable possible outcome.
• Vickrey–Clarke–Groves mechanism — Select an outcome maximizing reported total value and charge Groves transfers that make each agent internalize their effect on others, yielding truthful reporting as a dominant strategy under quasilinear assumptions.
• Willingness to pay — The maximum amount of money or other numeraire an actor would exchange for one unit of a good, service, outcome, or risk change under a declared decision context.