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A common problem in applied economics is to determine the impact on consumers of changes in prices and attributes of marketed products as a consequence of policy changes. Examples are prospective regulation of product safety and reliability, or retrospective compensation for harm from defective products or misrepresentation of product features. This paper reexamines the foundations of welfare analysis for these applications. We consider discrete product choice, and develop practical formulas that apply when discrete product demands are characterized by mixed multinomial logit models and policy changes affect hedonic attributes of products in addition to price. We show that for applications that are retrospective, or are prospective but compensating transfers are hypothetical rather than fulfilled, a Market Compensating Equivalent measure that updates Marshallian consumer surplus is more appropriate than Hicksian compensating or equivalent variations. We identify the welfare questions that can be answered in the presence of partial observability on the preferences of individual consumers. We examine the welfare calculus when the experienced-utility of consumers differs from the decision-utility that determines market demands, as the result of resolution of contingencies regarding attributes of products and interactions with consumer needs, or as the result of inconsistencies in tastes and incomplete optimizing behavior. We conclude with an illustrative application that calculates the welfare impacts of unauthorized sharing of consumer information by video streaming services.

Zonder onderwerpscode: economie

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We consider demand systems for utility-maximizing consumers facing general budget constraints whose utilities are perturbed by additive linear shifts in marginal utilities. Budgets are required to be compact but are not required to be convex. We define demand generating functions (DGF) whose subgradients with respect to these perturbations are convex hulls of the utility-maximizing demands. We give necessary as well as sufficient conditions for DGF to be consistent with utility maximization, and establish under quite general conditions that utility-maximizing demands are almost everywhere single-valued and smooth in their arguments. We also give sufficient conditions for integrability of perturbed demand. Our analysis provides a foundation for applications of consumer theory to problems with nonlinear budget constraints.

Zonder onderwerpscode: economie

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Transport. Traffic --- Choice of transportation --- Consumers --- URBAN TRANSPORTATION --- Mathematical models --- 656.1 --- Road transport --- 656.1 Road transport --- Choice of transportation - Mathematical models --- Consumers - Mathematical models --- URBAN TRANSPORTATION - Mathematical models