The independence transformation under almost additivity

When the consumer's tastes are close to preference independence, each transformed good is uniquely associated with one observed good. The off-diagonal elements of the composition matrix of the transformation are equal apart from sign and are inversely proportional to the difference between the income elasticities of the corresponding observed goods.     

Consumer's surplus and income redistribution

In reformulating consumer's surplus analysis, Hicks focused on a single household. The present essay extends the analysis to many households in a manner that seems not yet to have been explored systematically: by integrating consumer's surplus with the social welfare function. This is done in a general, as distinct from the usual partial, equilibrium context. A resulting formula, relating the community's gain from a resource reallocation in a novel way to the associated changes in volume and distribution of income, inclusive of surpluses, may facilitate applications. The analysis may also clarify some recurring issues regarding consumer's surplus.     

Estimating compensating and equivalent income variations from hedonic price models

Estimates of welfare changes obtained from hedonic price models usually consist of changes in Marshallian consumer's surplus. This note shows how compensating and equivalent income variations can be computed from the information available in hedonicprice models.     

Do price-tags influence consumers’ willingness to pay? On the external validity of using auctions for measuring value

This paper considers the external validity of the growing corpus of literature that reports the use of laboratory auctions to reveal consumers’ willingness to pay for consumer goods, when the concerned goods are sold in retail stores through posted price procedures. The quality of the parallel between the field and the lab crucially depends on whether being informed of the actual field price influences a consumer’s willingness to pay for a good or not. We show that the elasticity of the WTP revision according to the field price estimation error is significant, positive, and can be roughly approximate to one quarter of the error. We then discuss the normative implications of these results for future experiments aimed at eliciting private valuations through auctions.     

Product quality,advertising intensity and market size

We develop a model of product differentiation in which firms strategically compete in product quality and advertising intensity. Products exhibit a combination of vertical and horizontal differentiation. A consumer’s utility has a stochastic relationship with quality, but they are more likely to prefer a higher quality good. Consumers face a trade-off between higher quality goods and price. Increased competition leads to less advertising, but may result in higher or lower quality products offered in the market.     

More on tariffs and non-traded goods

The general equilibrium effects of a small tariff on relative prices are analysed within a demand and supply model which provides further insights into Dornbusch's (1974) results. It is shown that the elasticity of the price of non-traded goods with respect to the tariff is a weighted average of the degree of substitutability between non-traded goods and importables on the supply side and that on the demand side. When complementarity is ruled out, the price of non-traded goods increases with the tariff, but less than proportionally.     

High Price Strategy and Quality Signalling

I investigate a high price strategy by a durable‐goods producer for signalling the high quality of goods. It is assumed that two types of monopolists exist: high‐quality and low‐quality. The monopolist's type is assumed to be unknown to consumers in the first period. Before the beginning of the second period, a product reputation established in the past period enables consumers to recognize the real type of the monopolist. I show that there occurs a signalling equilibrium where the high‐quality type monopolist uses a high price strategy. An interaction between the new and old products peculiar to the durable‐goods markets plays an important role in the pricing strategy.     

Planning under market socialism when iteration is incomplete

If an iterative planning procedure is cut short due to time shortage, the plan must be set subject to information gaps. But the nature of these gaps depends on which iterative procedure was used. For the case of Lange's model, Weitzman's “prices versus quantities” framework is redeveloped for the particular information gaps then found. With one good, the optimal quantity signal comes from the expected supply-demand intersection, but an optimal price signal lies between this intersection and the price from the last stage of iteration. When there are many goods, however, we cannot be so specific.     

A note on decentralizability in consumer demand models with quantity rationing

It is shown that in a context of quantity rationing, it is not always possible to decentralize the consumer's intertemporal behavior in a sequence of atemporal, static optimization programs. Whether or not decentralizability holds crucially depends on the perceived rationing scheme.     

Some Hicksian and Marshallian consumer's surplus estimates in discrete choice

This note describes the theory and practice of applying the Hicksian approach to cost-benefit analysis to discrete choice models. It illustrates the technique with numerical estimates of Hicksian and Marshallian consumer's surplus measures based on computer simulations using real-world data.     

The roles of relative prices,interest rates,and bequests in the consumption function

This paper investigates the roles of relative prices, interest rates, inflation expectations and bequests in the determination of consumer expenditures for four goods in the U.S. The framework employed is a life-cycle extension of the Linear Expenditure System, in which relative prices, wealth, labor income, the nominal interest rate, and anticipated rates of inflation for each good are major arguments. The results provide strong empirical support for the expenditure system employed and suggest a significant role for relative prices and for the bequest motive in shaping saving decisions. We also find that expenditure decisions respond to both interest rates and anticipated inflation in a “Fisherian” fashion, but that the interest elasticity of saving is quite low and of uncertain sign. Our model also provides an estimate of the consumer's “horizon,” defined in the sense of Friedman.     

Brand loyalty and user skills

The paper develops the idea that brand loyalty is a rational thing for a consumer to have. The reason is that a consumer's experience with a brand creates user skills which make that brand more useful to the consumer than other brands, even though these, given the same experience, would be equally useful. In a brand switching model this implies that the consumer will switch brands only if there is an adequately large price differential and that the required price differential increases with user skills. The theory is related to standard search theory and it is shown that user skills and search costs have similar effects in the sense that either can support price dispersion in a market.     

Observable preferences for public goods

This paper discusses the circumstances under which it is possible to use the market or aggregate demand functions generated from individual utility maximization to obtain consumers' preferences for certain classes of public goods, and thus obtain the information needed to satisfy the Samuelsonian efficiency conditions for these public goods. The restrictions on the preferences of all consumers which are sufficient to use the aggregate demand function are: (i) there exists a price vector such that the level of public good provisiion is valueless, and (ii) the marginal rate of substitution of the private good price for the level of public good provision is independent of income.     

Private good clubs and the core

The incentive for potential club members to form private good clubs is an average cost function that is decreasing over at least part of its range. Benefits to club members are measured by consumer's surplus, and a game theoretic characteristic function is used to describe total club benefits. Then, in the game framework, the optimum club size is examined and related to the existence of the core, which in turn is shown to be crucially dependent on the demand and cost curves.     

Indivisibility,irreversibility, and the demand for consumer durables

A deeper understanding of the volatility of expenditures on consumer durables is sought in the properties of those goods and the transactions by which they are acquired: durability, indivisibility, and irreversibility. When these properties constrain optimization we find: 1) variation in the lengths of endogenously determined replacement cycles rather than stock-level adjustments may account for much of the volatility, 2) the qualitative nature of an individual consumer's response to a shock depends on the age of his existing unit relative to its optimal replacement age when the shock occurs, 3) the aggregate distribution of unit ages relative to their optimal replacement ages conditions the aggregate response to shocks, and 4) shocks actually change that distribution. A simple aggregation methodology is demonstrated which depicts exaggerated aggregate reactions to shocks.     

Energy prices,substitution, and optimal borrowing in the short run: An analysis of adjustment in oil importing developing countries

The paper discusses optimal short-term borrowing in response to an increase in the price of imported inputs. The rationale for borrowing lies in the increase in substitution possibilities in production (between imported and domestic inputs) and in consumption (between traded and non-traded goods) as the economy adjusts its structure to the new prices. A typology of LDCs and the oil price increases in the 70's are used to illustrate the results of the model, which are compared with the actual increase in borrowing during the period.     

The treatment of ‘quality’ in the cost of living index

This paper develops the implications of cost of living index theory for measuring the impact of changes in the availability and prices of goods on a household's welfare. It considers both the ‘goods approach’, which treats each variety as a separate entity, and two characteristics approaches: ‘L-characteristics’ and ‘H-characteristics’. L-characteristics are Lancaster's ‘linear and additive’ specification; H-characteristics are Houthakker's ‘heterogeneous’ specification in which the household consumes only a single variety of each product. The paper concludes by discussing the implications of the theory for actual index number construction and relating it to the literature on ‘quality’ and ‘hedonic indexes’.     

The consumer's demand for diversity

The consumer's demand for diversity is measured either by the entropy or by the Hirschman-Herfindahl index of the budget shares. This notion, including the income elasticity of the demand for diversity, is applied to per capita consumption data of 30 countries.     

The scope of satisfactory mechanisms for the provision of public goods

This paper establishes the existence of satisfactory public-good provision mechanisms when utilities are nonseparable. The assumptions used to obtain this result are: (1) that the public good is continuously variable; (2) that utility functions are parametrically representable and twice continuously differentiable; and (3) that the provision rule is a strictly increasing function of the reported marginal rates of substitution between the public good and the private good. The satisfactory mechanisms derived are all augmented Groves mechanisms and are equivalent to Groves mechanisms if, and only if, each consumer's utility function is additive in income.     

The consumption function and the precautionary demand for savings

Under the assumptions of constant absolute risk aversion and serially correlated, normally distributed, income shocks, an explicit solution to the consumer's intertemporal optimization problem is derived which parameterizes the precautionary demand for savings.