Switching costs, consumer heterogeneity and price discrimination

In a duopoly with price discrimination and switching costs, we analyse the evolution of market structure, when an incumbent and a new entrant compete, and a new class of users with lower willingness to pay appears in the market. We find that the market share of the new entrant depends on the degree of heterogeneity and the level of switching costs. In particular, if the degree of heterogeneity is intermediate, the evolution of market structure is similar for high and null switching costs. Since consumer surplus and social welfare are unambiguously lower under high switching costs, this result points at the risk of inferring the degree of market competitiveness from the convergence in market shares.     

Pricing and price competition in consumer markets

This paper offers a simple model of the price mechanism in markets where buyers take prices as given and prices are set by sellers, as in most consumer markets. It explains price competition by arguing that a market price goes down if—and only if—a price cut appears profitable to a firm even if its competitors follow suit. It also explains why markets do not always clear, that is, why production can be restricted by sales and not capacity at prices set by firms.     

The Laspeyres bias in the Spanish consumer price index

The CPI compares the cost of acquiring a reference quantity vector at current and base prices. Such reference vector is the vector of mean quantities actually bought by a reference population, whose consumption patterns are investigated during a period τ prior to the index base period 0. This paper shows that unless the price change between these two dates is taken into account, the CPI ceases to be a proper statistical price index of the Laspeyres type. Among several negative consequences, the most important is that this omission produces a bias in the measurement of inflation: the ‘Laspeyres bias’. Using Spanish data, the size of the Laspeyres bias is estimated at -0.061% per year, during 1992–1998. The Laspeyres bias in shorter time periods reached -0.122% per year in 1992, and -0.108 in 1997.     

Inflation regimes,core inflation measures and the relationship between producer and consumer price inflation

The main purposes are to develop a method for measuring the economies of scope, which involves the use of non-parametric production frontiers and does not require information on input prices; and to apply this method to individual hospital data drawn from a sample of Spanish hospitals. The results confirm the presence of technical inefficiencies and also of potential and non-exploited economies of scope. The combination that produces most economies of scope is that of gynaecology and paediatrics.     

Coevolution of product quality and consumer preferences

This paper seeks to analyze the self-reinforcing coevolutionary process of innovation on the basis of the framework of evolutionary ecology and population genetics. Particularly central to this analysis is “Fisher’s runaway process,” which explains the coevolution of product quality and consumer preference in the supply–demand context. This paper puts forward the following main points. First, we can conclude from a matching model of supply and demand that when a consumer who prefers high-quality products discovers such a product in the market, he/she will certainly purchase that product. Second, taking into account both the high survival rate of a firm that supplies a high-quality product and the cost incurred by the firm in improving product quality, we arrive at an evolutionarily stable Fisher’s process. The third point, however, considers the disutility of a consumer with an inordinately high quality preference; in this case, Fisher’s process disappears. Fourth, it is possible to recover Fisher’s process if we consider the existence of power users or the effect of the negative bias of innovation.     

Relative price and inflation variability in a simple consumer search model

There is a large empirical literature on the effect of aggregate inflation on both price-level dispersion (relative price variability, RPV) and inflation rate dispersion (relative inflation variability, RIV) across goods or locations. Early empirical work of RIV has an explicit theoretical foundation in signal-extraction models. However, recent empirical work on RPV has produced results inconsistent with signal-extraction models. In particular, while RIV is increasing in the absolute value of inflation shocks, RPV is a negative monotonic function of inflation shocks. We show that consumer search theory offers a potential explanation for these apparently contradictory observations.     

The Slutsky matrix and homogeneity in intertemporal consumer theory

A dual vista of an intertemporal model of the consumer yields insights into its fundamental qualitative structure that previous research was heretofore unable to uncover. For example, the intertemporal Slutsky matrix and its properties of symmetry and negative semidefiniteness apply to the integral of the discounted open-loop demand and supply functions, not to the instantaneous open-loop demand and supply functions. The results are established in a general dynamic model of the consumer which accounts for durable and nondurable goods, installation costs for the durable goods, and a leisure/labor choice.     

Neo-Schumpeterian price theory with Sraffian and post-Keynesian elements

This paper contributes to the development of a neo-Schumpeterian price theory by combining elements of Sraffian and post-Keynesian price theory with elements drawn from Schumpeter’s own theory of prices. The result is an integrated heterodox approach to price theory incorporating the realism of post-Keynesian pricing rules and the rigour of Sraffa’s formal modelling, along with Schumpeter’s insight that capitalism develops “from within” in a disruptive and uneven manner.     

The theory of economic price and quantity indicators

Summary. This paper develops the theory of economic price and quantity indicators, being the difference analogue of indexes. The properties of indicators and indexes are compared. Observable bounds for the indicators will be derived, as well as two exactness results for Bennet (1920)-type price and quantity indicators.Received: 3 January 2002, Revised: 2 December 2002, JEL Classification Numbers: C43Previous versions of this paper were presented at the Economic Measurement Group Workshop 2001, School of Economics, University of New South Wales, Sydney, 30 March 2001, and at a seminar at the School of Economics, University of New England, Armidale NSW, 7 September 2001. The authors thank Erwin Diewert for helpful comments on a previous version. The views expressed in this paper do not necessarily reflect any policy of Statistics Netherlands.     

Environmental impact, quality, and price: Consumer trade-offs and the development of environmentally friendly technologies

The paper examines the effect of heterogeneous consumer trade-offs - between environmental performance, quality of service characteristics, and price - on the generation and diffusion of environmentally benign technology paradigms. We find that the direction, timing, and environmental impact of new paradigms is shaped by the distribution of consumer trade-offs. Of key importance are the initial distributions of consumer preferences, and how those distributions evolve over time. This has serious implications on environmental pollution, and for policy makers seeking to influence the ‘greening’ of consumer demand.     

Heterogeneous beliefs, price dispersion, and welfare-improving price controls

Summary. We consider a search market model where agents have heterogeneous beliefs about the distribution of prices. A suggestive example shows that Jevon's Law of One Price and standard welfare results are not robust to small heterogeneous errors in beliefs. In particular we show that a price ceiling above marginal cost can reduce price dispersion and improve welfare (by lowering aggregate search costs) without decreasing quantity supplied. These results are broadly consistent with the empirical evidence. Received: July 27, 1999; revised version: May 24, 2000     

以交易成本理论探究网路消费者行为

本研究旨在结合交易成本理论与其它影响因子（如产品品质、知觉风险与知觉价值）,试图发展整合型研究模式以探究网路消费者行为。实证分析方法主要运用叙述性统计分析、因素分析、信度分析与路径分析。研究发现网路服务品质、产品品质与交易成本均对于知觉风险与知觉价值存在显着的地影响效果。其次,知觉风险与知觉价值也会对网路购买意图产生显着影响效果．此外,实证分析结果亦显示网路服务品质、产品品质与交易成本均可透过知觉风险与知觉价值,对于网路购买意图产生影响效果。     

Factor price overshooting with trade liberalization: theory and evidence

This paper develops an intra‐industry trade model with skilled and unskilled labor as factors of production, endogenous accumulation of skilled labor and firm heterogeneity in factor intensities to examine the effect of trade reforms on factor prices. Since exporters are more skill intensive than non–exporters, a decrease in trade barriers initially increases wage inequality between skilled and unskilled workers, as a result of an increase in the relative demand for skilled labor. Over time, however, as agents respond to the change in relative wages by investing in skilled labor, the relative wage of skilled labor decreases. Evidence from Chilean plant–level data supports the idea of factor price overshooting with trade liberalization.     

Product quality and the theory of comparative advantage

We develop a simple model to investigate the possibility that two countries that differ significantly in income levels may be unable to gain from trading with each other. We consider two countries with identical preferences and different technologies. There are two types of goods: one homogeneous, and one quality-differentiated. We show that if one country has an absolute advantage in both types of goods, then no trade may be possible between the two countries, despite differences in relative autarky prices.     

The 2001-3 electricity distribution price control review in the Netherlands: regulatory process and consumer welfare

The outcome of the first electricity distribution price control review in The Netherlands did not deliver the savings initially suggested by the regulator (DTe). During the course of the first 3-year regulatory period, DTe revised the X-Factors four times. The impact on tariffs has been substantial. DTe initially announced in 2000 that savings would be equivalent to 25% of electric distribution revenues ( 2bn). However, final X-Factors in May 2003 resulted in savings of 10% of revenues. The total cost to consumers—when compared to the most probable outcome—has been 140 mln (7% of total revenues).      

Regional variations in US consumer response to price changes in home heating fuels: the Northeast and the South

This paper considers the paradox of a consistent net outflow of people from areas of high job creation and wages over the past 20 years and suggests the explanation that different individuals have different motivations for moving. The Labour Force Survey indicates that workers moving for job reasons have migrated to areas of low unemployment and high nominal wages. However, the inflow into such areas has been more than compensated for by an outflow of people moving for non-job reasons. A logit analysis of destination choice indicates that job movers are attracted to areas with high wages but are not affected by high house prices in such areas. In contrast, active non-job movers are deterred from areas of high house prices. Regional house price differences do not influence the destination choice of homemakers or the terminally sick but they do influence the destination choice of retirees. All groups prefer to travel the least distance when moving.     

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.     

Partial privatization in mixed duopoly with price and quality competition

We analyze price and quality competition in a mixed duopoly in which a profit-maximizing private firm competes against a state-owned public firm. We first show that the welfare-maximizing public firm provides a lower quality product than the private firm when they are equally efficient. In order to maximize social welfare, government manipulates the objective of the public firm that is given by a convex combination of profits and social welfare. It is demonstrated that an optimal incentive of the public firm is welfare maximization under the absence of quality competition, but it is neither welfare maximization nor profit maximization under the presence of quality competition. The result supports a completely mixed objective between welfare and profit maximizations or partial privatization of the public firm.