AIRPORT PRIVATIZATION AND INTERNATIONAL COMPETITION

We provide a simple theoretical model to explain the mechanism whereby the privatization of international airports can improve welfare. The model consists of a downstream (airline) duopoly with two inputs (landings at two airports) and two types of consumers. The airline companies compete internationally. We show that the outcome in which both airports are privatized is always an equilibrium, whereas that in which no airport is privatized is an equilibrium only if the degree of product differentiation is large. We also discuss airport congestion problems within the model framework.     

INEFFICIENT LOCK‐IN AND SUBSIDY COMPETITION*

This article studies a subsidy game among two asymmetric regions in a new trade model. Capital can freely move among regions, but capital rewards are repatriated to the region of residence. The activity of the modern sector is associated with positive spillovers. We study subsidy competition, starting from an equilibrium where the industry core is inefficiently locked in to the smaller region. When regions weigh workers’ and capitalists’ welfare equally, subsidy competition results in a relocation of industry to the larger region, restoring an efficient allocation. When workers’ welfare is weighted more heavily, the smaller (core) region may pay subsidies that are high enough to prevent a relocation of industry.     

GROWTH,INTER‐INDUSTRY AND INTRA‐INDUSTRY COMPETITION AND WELFARE*

In this paper we introduce strategic interaction between firms in an R&D growth model which captures both the intra‐industry competition between firms operating within an industry and the inter‐industry competition between firms in different industries. We show that the more substitutable the goods produced within each industry (across industries) are, that is, the more intense the intra‐industry (inter‐industry) competition, the higher is the growth rate. In the comparison between social optimum and a decentralized economy, it is shown that the market outcome is characterized by inefficiently high entry of firms within each industry and insufficient productivity growth.     

QUANTITY PRECOMMITMENT AND BERTRAND COMPETITION YIELD COURNOT OUTCOMES: A CASE WITH PRODUCT DIFFERENTIATION*

Using a simple model of two-stage duopoly game, this paper shows that Bertrand-like price competition on a differentiated goods market, following a simultaneous endogenous choice of production capacity, yields the Cournot-like outcomes.     

WELFARE‐MAXIMISING PRICING IN A MACROECONOMIC MODEL WITH IMPERFECT COMPETITION AND CONSUMPTION EXTERNALITIES

This paper develops a simple macroeconomic model with imperfect competition and consumption externalities, and uses it to examine whether the marginal cost pricing rule in the partial equilibrium framework can apply to the general equilibrium framework. It is shown that, for welfare to be maximised, average revenue should be set equal to marginal cost if consumption externalities are either absent or positive. However, for welfare to be maximised, average revenue should be set higher than marginal cost in the presence of negative consumption externalities.     

ADVERTISING RESTRICTIONS, COMPETITION, AND ALCOHOL CONSUMPTION

Distilled spirits producers recently voted to eliminate their voluntary ban on broadcast advertising. The ban received public support because of the high social cost associated with alcohol consumption and the belief that advertising promotes alcohol consumption and abuse. In spite of this belief, the empirical evidence indicates that advertising has no significant effect on the market demand for distilled spirits. This evidence has led many policy economists to conclude that eliminating the ban will have no effect on alcohol consumption. The purpose of this research is to show that this conclusion is incorrect because it ignores the fact that advertising restrictions may affect industry competition as well as market demand.     

INNOVATION AND COMPETITION POLICY*

This paper discusses the issue of competition policy and innovation. First, a short review on the theoretical analysis of competition and innovation is provided, relying on the recent book by Aghion and Griffith (2005 ). Then, we examine how such innovation related issues as collaborative research, patent pool, merger in the technology intensive sector and bundling in the software industry are treated under Japan's Anti‐Monopoly Act. We contend that traditional competition policy framework is capable of dealing with innovation related issues but there are several points that should be kept in mind when competition policy deals with innovation related issues.     

MONOPOLISTIC COMPETITION WITH EFFICIENCY GAPS AND A HECKSCHER‐OHLIN TRADE PATTERN*

We develop a two‐factor, three‐sector model of international trade in which the monopolistically competitive firms are characterized by different fixed production costs. We show that, depending on the pattern of the international distribution of factor endowments, the trade pattern is determined not only by relative factor endowments as suggested by Heckscher and Ohlin, but also by absolute factor endowments via a mechanism of competitive selection in the monopolistically competitive sector.     

STRATEGIC DEBT AND RJV COMPETITION*

Firms first choose their debt level, next form an RJV and choose R&D investment, and then choose output in Cornot competition. Through the use of debt, a firm commits an aggressive stance, a higher output level, and higher R&D investment, whereby the latter helps solve the free‐riding problem that usually exists in R&D studies. However, a firm in an unleveraged industry gains the highest profit, while a leveraged firm in an asymmetric industry (which achieves the highest profit in Brander and Lewis (1988)) gains the lowest profit. As a result, both firms using debt and both firms not using debt are the two equilibria, and the latter survives as a focal outcome. This is in sharp contrast to Brander and Lewis who find that both firms using debt is a prisoner's dilemma outcome.     

AUCTIONS,EX POST COMPETITION AND PRICES: THE EFFICIENCY OF PUBLIC‐PRIVATE PARTNERSHIPS*

ABSTRACT ** : Using an original database concerning 1102 French local public authorities in 2001, we explore the relationships between prices charged by private operators in water contracts and ex post competition. We show that prices charged in contracts in which operators are in a monopoly situation throughout the duration of the contract, are not affected by a ‘competition effect’ between private operators. However, a competition effect between private operators and public management appears to be crucial in explaining prices combined with a ‘termination effect’, reflecting the fact that the contract is close to being renewed, and hence re‐auctioned.     

ENDOGENOUS TIME PREFERENCE,INTEREST‐RATE RULES,AND INDETERMINACY*

This paper extends the Benhabib et al. flexible‐price, money‐in‐the‐utility‐function model by considering endogenous time preference and re‐examines equilibrium indeterminacy in response to alternative interest‐rate rules. We show that either an active or a passive interest‐rate feedback rule can generate local indeterminacy even if consumption and real money balances are Edgeworth independent. This result is in sharp contrast to that in the related literature. We also find that in the presence of endogenous time preference, local indeterminacy may occur regardless of whether the monetary policy is based on the interest‐rate feedback rule or money growth‐rate targeting.     

CONSUMPTION AND TIME USE OVER THE LIFE CYCLE

We incorporate home production in a dynamic general equilibrium model of consumption and savings with illiquid housing and a collateralized borrowing constraint. The calibrated model explains life‐cycle patterns of households' time use and consumption of different categories documented from the microdata. It predicts that the interaction of the labor efficiency profile and the home production technology explains households' time use. The resulting income profiles, the endogenous borrowing constraint, and home production account for the initial hump in consumption. The complementarity of home hours, home input, and housing in home production drives the consumption profiles later in the life cycle.     

QUALITY DIFFERENTIATION,WELFARE, AND THE MODE OF COMPETITION IN A VERTICALLY DIFFERENTIATED PRODUCT MARKET: A NOTE*

We analyse the implications of quality differences in a vertically differentiated product market for social welfare by employing an endogenous quality choice model. We find that in of Bertrand and Cournot duopolies, the degree of quality differentiation at equilibrium in an unregulated market is larger or smaller, respectively, than that of the socially second‐best optimum. This implies that a reduction in quality difference, respectively, increases or decreases social welfare in the case of Bertrand or Cournot duopolies.     

WHOLESALE PRICES AND COURNOT‐BERTRAND COMPETITION

This note considers the competing vertical structures framework with Cournot‐Bertrand competition downstream. It shows that the equilibrium wholesale price paid by a Cournot (Bertrand)‐type retailer is above (below) marginal costs of a corresponding manufacturer. This result contrasts with the one under pure competition downstream (i.e., Cournot or Bertrand), where the wholesale price is set below (above) marginal costs in case of a Cournot (Bertrand) game at the retail level.     

BUREAUCRACY AND TIME CONSISTENCY*

We construct a model that takes seriously the role of bureaucracy in the characterization of time-consistent policies. We argue that if the possibilities for governments to reduce the size of bureaucracy are limited, bureaucracy can be used as a means for influencing future governments. We show that the political process has implications for the size and growth of bureaucracy. Parties in power may hire bureaucrats of the opposite political color. This is a part of the time-consistent policy. Our model also gives an explanation for the growth of bureaucracy. This is a consequence of the time-consistent policies, i.e. policies that partially tie the hands of future governments. We also show that if public sector production is inefficient, the public sector will be too large in the long run. In the short run it may be too small.     

TESTING UNCOVERED INTEREST PARITY: A CONTINUOUS‐TIME APPROACH*

Nowadays researchers can choose the sampling frequency of exchange rates and interest rates. If the degree of overlap is large relative to the sample size, standard GMM asymptotic theory provides unreliable inferences in uncovered interest parity (UIP) regression tests. We specify a continuous‐time model for exchange rates and forward premia robust to temporal aggregation, unlike existing discrete‐time models. We test the UIP restrictions on the continuous‐time model parameters and propose a novel specification test that compares estimators at different frequencies. Our results based on correctly specified models provide little support for UIP at both short and long horizons.     

GROWTH AND BUBBLES WITH CONSUMPTION EXTERNALITIES*

This paper explores the role of consumption externalities in an overlapping generations economy with capital accumulation. If consumers in each generation are concerned with other agents’ consumption behaviours, there exist intergenerational as well as intragenerational consumption externalities. It is the presence of intergenreational consumption externalities that may produce fundamental effects both on equilibrium dynamics and on steady‐state characterization of the economy. This paper demonstrates this fact in the context of a simple model of endogenously growing, overlapping‐generations economy with or without asset bubbles.     

ENDOGENOUS FERTILITY AND THE CONSUMPTION TAX*

The differential incidence between the consumption tax and the labour income tax is examined in a model where altruistic parents decide the number of children endogenously. In contrast with past results, the consumption tax is not neutral and exerts distortional effects. As a result, welfare gets worse off through the tax reform of switching from a labour income tax to a consumption tax. This provides the argument about the treatment of bequests under a consumption tax.     

DOMESTIC COMPETITION POLICY AND TARIFF POLICY COMPARED*

M. Yano and F. Dei have demonstrated that, by controlling the degree of competition in a non‐tradables market (competition policy), a country can influence the terms of trade so as to increase its welfare, relative to free trade. Using their model, this study compares the extent of this effect with that of a tariff policy. It demonstrates that a competition policy can achieve a higher utility than a tariff policy if tariff rates are at levels currently tolerated in the real world. This demonstrates that domestic competition policy may play an important role as a substitute for tariff policy.