market structure and market outcomes in deregulated rail freight markets abstract using cross section data on a national sample of city pair markets for rail freight i examine correlations between prices quantities and the number of single line and interline firms serving markets i estimate the reduced form of a structural model in which rail rates and quantities depend on the number of firms i find that rates increase as the number of firms serving the market falls and quantities shipped rise as the number of firms falls the result is consistent with market power for rail freight shippers that causes markups to rise when fewer firms serve the market and is not consistent with other explanations of the relationship between number of firms and rates and quantities interline shipment is much more costly than single line suggesting that mergers may be desirable even if they exacerbate market power problems

competition and the number of firms in a market are duopolies more competitive than atomistic markets this paper uses a variant of the standard search model to examine market equilibrium and the consequences for market equilibrium of an increase in the number of firms if marginal search costs increase with the number of searches then the demand curve facing any firm will be kinked with the elasticity of demand with respect to price decreases being less than with respect to price increases prices may not change in response to changes in marginal costs as the number of firms increases the maximum price that is consistent with equilibrium increases to the monopoly price but the minimum price decreases on the other hand if marginal search costs decrease with the number of searches equilibrium if it exists is characterized by a

search costs and prices abstract this paper examines the effect of consumer search costs on the level of prices and price dispersion we show that as search costs decrease prices may increase and price dispersion may also increase

search intensity in oligopoly a simultaneous price setting oligopoly game characterized by the existence of buyers with differing price information is presented the information structure of the game is more general than previously considered thereby permitting a richer analysis in addition to identifying the general conditions that lead to equilibrium with price dispersion the author provides a revealing reinterpretation of models characterized by simpler information structures an important finding of the paper is that additional price information in the market impacts prices differently only if the poorly informed buyers are reached can we expect average prices to decrease copyright 1996 by blackwell publishing ltd

the finance growth nexus evidence from bank branch deregulation this paper provides evidence that financial markets can directly affect economic growth by studying the relaxation of bank branch restrictions in the united states we find that the rates of real per capita growth in income and output increase significantly following intrastate branch reform we also argue that the observed changes in growth are the result of changes in the banking system improvements in the quality of bank lending not increased volume of bank lending appear to be responsible for faster growth

growth habit formation and catching up with the joneses when habits are introduced multiplicatively in a capital accumulation model the consumers objective function might fail to be concave in this paper we provide conditions aimed at guaranteeing the existence of interior solutions to the consumers problem we also characterize the equilibrium path of two growth models with multiplicative habits the internal habit formation model where individual habits coincide with own past consumption and the external habit formation or catching up with the joneses model where habits arise from the average past consumption in the economy we show that the introduction of external habits makes the equilibrium path inefficient during the transition towards the balanced growth path we characterize in this context the optimal tax policy

discrete equilibrium price dispersion an explicit solution of an equilibrium model with price setting firms and searching customers makes possible a number of comparativestatics predictions about how cost differences among firms search costs of customers and taxes will affect the mean and variance of the distribution of market prices another implication of the model is that a firm s demand depends on the difference between its price and the average price in the market

modelling price dispersion as an outcome of competition in the irish grocery market the paper empirically models price dispersion between related brands within product categories of the irish independent grocery market retail brand prices are averaged over the independent shops stocking the brand since individual brands are retailed through different groups of shops brands are priced over heterogeneous consumer segments brand price dispersion is estimated to increase with competition when conditioned on brand distribution structures while controlling for other observed and unobserved deterministic factors the data suggest that brand pricing across consumer groups induce varying degrees of localised price competition rather than pricing across segments to extract consumer willingness to pay

growth in post soviet russia a tale of two transitions abstract in the early stages of post soviet russia s economic transition small scale entrepreneurial activity appeared to be a strong engine of growth moreover striking regional variations in initial conditions and adopted policy reforms appeared useful in accounting statistically for observed regional variations in entrepreneurial activity here we investigate whether these relationships have persisted as russia s transition has continued to evolve and find that they have not we then document that the emergence of bank issued credit virtually non existent outside of moscow prior to 2000 has been an important engine of growth since 2000 thus to date russia s post soviet development appears as a tale of two distinct transition paths

product diversity in asymmetric oligopoly is the quality of consumer goods too low we analyse an oligopoly model incorporating horizontal differentiation and quality differences high quality goods are overpriced and underproduced when the market is fairly well covered low quality products may be profitable when their net social contribution is negative implying excessive entry in a relatively uncovered market even low quality goods are underproduced and there may be underentry when fixed costs are independent of quality the market tends to select the right firms otherwise the market may produce low quality products when it should produce high quality ones the model is calibrated using market data for yoghurt

optimal consumption taxation in a model of endogenous growth with external habit formation abstract this paper devises a consumption tax policy that allows to decentralize the efficient equilibrium in an ak endogenous growth model with external habit formation the equilibrium dynamics including that of the optimal taxes is characterized by means of phase diagram analysis

zombie lending and depressed restructuring in japan this paper explores the role that misdirected bank lending played in prolonging the japanese macroeconomic stagnation that began in the early 1990s the investigation focuses on the wide spread practice of japanese banks of continuing to lend to otherwise insolvent firms we docu ment the prevalence of this forbearance lending and show its distorting effects on healthy firms that were competing with the impaired firms the paper by hoshi 2000 was the first to call attention to this phenomenon and its ramifi

linking price dispersion to product differentiation incorporating aspects of customer involvement the fact that product differentiation can cause price dispersion price differences between alternative brands of what are seemingly identical products is not surprising our contribution is to establish not whether but how it does so we explore the mechanisms involved using a variant of hotelling s market line model we make no explicit assumptions about the functional form of the consumer s utility function so that we derive a general relationship between price dispersion and product differentiation we then survey 16 product groups to identify the functional form of the consumer s utility function that allows our result to best fit real world circumstances we show that it is not product differentiation per se that causes price dispersion but rather the presence of a differential advantage of one product over another more importantly we show that the impact of a differential advantage in causing price dispersion is amplified or attenuated by an aspect of customer involvement in a purchase th

social structure and development a legacy of the holocaust in russia we document a statistical association between the severity of the persecution displacement and mass murder of jews by the nazis during world war ii and long run economic and political outcomes within russia cities that experienced the holocaust most intensely have grown less and both cities and administrative districts oblasts where the holocaust had the largest impact have worse economic and political outcomes since the collapse of the soviet union we provide evidence that the lasting impact of the holocaust may be attributable to a permanent change it induced in the social structure across different regions of russia

price dispersion and inflation evidence from israel the paper considers the question whether observed price differentials reflect perceived differences in quality service agreements or location or whether information imperfections can explain this phenomenon it sets out theoretical arguments linking inflation to reductions in the information stock held by agents and thus to greater price dispersion the hypothesis is tested using monthly price data for 13 uniquely defined goods sold in israel between 1971 and 1984 price dispersion is shown to be positively related to the rate of market price inflation since inflation is an unlikely proxy for changes in perceived characteristics the findings support price dispersion theories based on optimally imperfect decision making

financial development bank ownership and growth or does quantity imply quality abstract in 1980 india nationalized its large private banks this induced different bank ownership patterns across different towns allowing credible identification of the effects of bank ownership on financial development lending rates and the quality of intermediation as well as employment and investment credit markets with nationalized banks experienced faster credit growth during a period of financial repression nationalization led to lower interest rates and lower quality intermediation and may have slowed employment gains in trade and services development lending goals were met but these had no impact on the real economy

habit formation in consumption and its implications for monetary policy models this paper explores a monetary policy model with habit formation for consumers in which consumers utility depends in part on current consumption relative to past consumption the empirical tests developed in the paper show that one can reject the hypothesis of no habit formation with tremendous condence largely because the habit formation model captures the gradual hump shaped response of real spending to various shocks the paper then embeds the habit consumption specication in a monetary policy model and nds that the responses of both spending and inflation to monetary policy actions are signicantly improved by this modication jel d12 e52 e43

equilibrium with product differentiation tive consumer formulations is used to examine the properties of single and multiple price equilibria conditions under which decreases in the intensity of consumer preferences reduce price are given it is shown that with certain types of demand curves entry can eliminate price cost markups even given product differentiation if competition is localized it is demonstrated that entry does not affect the markup finally the effect of spurious product differentiation on price is examined

price dispersion in an automobile insurance market from automobile insurance data for alberta over the period 1974 81 we find thatpremiums are highly correlated across driver classes in a given year but that premiums for a given driver class are not correlated over a period of more than 5 years firms relative market shares among drivers over age 25 and married males under 25 are inversely related to their deviations from the mean premiums in these driver classes the variance of real premiums decreases with the numberof firms in the market and increases with the real loss cost per car insured and the number of cars insured from these results we conclude that the price dispersion in automobile insurance in alberta is based on costly consumer search

number of sellers average prices and price dispersion abstract a variety of models provide differing predictions regarding the effect of an increase in the number of competitors in a market seller density on prices and price dispersion we review different approaches to generating equilibrium price dispersion and then empirically estimate the relationship between seller density average product price and price dispersion in the retail gasoline industry using four unique gasoline price data sets controlling for station level characteristics we find that an increase in station density consistently decreases both price levels and price dispersion across four geographical areas

existence and persistence of price dispersion an empirical analysis the hebrew university of jerusalem and nber using a unique data set on store level monthly prices of four homogenous products sold in israel i study the existence and characteristics of the dispersion of prices across stores as well as its persistence over time i find that price dispersion prevails even after controlling for observed and unobserved product heterogeneity moreover intra distribution mobility is significant stores move up and down the cross sectional price distribution thus consumers cannot learn about stores that consistently post low prices as a consequence price dispersion does not disappear and persists over time as predicted by varian s 1980 model of sales

property rights and finance which is the tighter constraint on private sector investment weak property rights or limited access to external finance from a survey of new firms in post communist countries we find that weak property rights discourage firms from reinvesting their profits even when bank loans are available where property rights are relatively strong firms reinvest their profits where they are relatively weak entrepreneurs do not want to invest from retained earnings

oligopolistic pricing with heterogeneous consumer search abstract a finite number of identical stores sell a homogeneous good to consumers with heterogeneous search costs who search sequentially with perfect recall and without replacement consumers search rules are optimal with respect to the stores pricing strategies and consumers must visit a store to obtain information about its actual price a symmetric nash equilibrium sne always exists the model exhibits a variety of equilibrium behaviors between monopoly pricing and marginal cost pricing the competitiveness of a market depends crucially on the shape of the search cost distribution moreso than on the number of competing firms

selection on observed and unobserved variables assessing the effectiveness of catholic schools in this paper we measure the effect of catholic high school attendance on educational attainment and test scores because we do not have a good instrumental variable for catholic school attendance we develop new estimation methods based on the idea that the amount of selection on the observed explanatory variables in a model provides a guide to the amount of selection on the unobservables we also propose an informal way to assess selectivity bias based on measuring the ratio of selection on unobservables to selection on observables that would be required if one is to attribute the entire effect of catholic school attendance to selection bias we use our methods to estimate the effect of attending a catholic high school on a variety of outcomes our main conclusion is that catholic high schools substantially increase the probability of graduating from high school and more tentatively attending college we find little evidence of an effect on test scores

oligopolistic pricing with sequential consumer search n identical stores compete by choosing prices for a homogeneous good with constant marginal costs consumers search sequentially with perfect recall for the lowest price one class of consumers called shoppers have zero search costs while all other consumers have a positive search cost c there is a unique symmetric nash equilibrium price distribution with the property that it changes smoothly from marginal cost pricing when all consumers are shoppers and or c 0 and monopoly pricing when no consumers are shoppers remarkably as the number of stores increases the nash equilibrium becomes more monopolistic copyright 1989 by american economic association

understanding the soft budget constraint we propose a clarification of the notion of a soft budget constraint a concept widely used in the analysis of socialist transitional and market economies our interpretation is broad enough to embrace most existing approaches to soft budget constraint phenomena and provides a classification of their causes and consequences in light of this interpretation we then review the theoretical literature on the subject and compare it with those on other dynamic commitment problems in economics

do lenders favor politically connected firms rent provision in an emerging financial market corruption by the politically connected is often blamed for economic ills particularly in less developed economies using a loan level data set of more than 90 000 rms that represents the universe of corporate lending in pakistan between 1996 and 2002 we investigate rents to politically connected rms in banking classifying a rm as political if its director participates in an election we examine the extent nature and economic costs of political rent provision we nd that political rms borrow 45 percent more and have 50 percent higher default rates such preferential treatment occurs exclusively in government banks private banks provide no

equilibrium price dispersion in retail markets for prescription drugs this study seeks to establish the empirical importance of price dispersion due to costly consumer search by examining retail prices for prescription drugs posted prices in two geographically distinct markets are shown to vary considerably across pharmacies within the same market even after one controls for variation due to pharmacy differences pharmacy heterogeneity accounts for at most one third of the observed price dispersion the empirical analysis hinges on the observation that consumers incentives to price shop depend on characteristics of the drug therapy cross sectional patterns in price distributions across drugs are consistent with the predictions of a search model prices for repeatedly purchased prescriptions for which the expected benefits of search are highest exhibit significant reductions in both dispersion and price cost margins

spatial price competition a semiparametric approach we investigate the nature of price competition among firms that produce differentiated products and compete in markets that are limited in extent we propose an instrumental variables series estimator for the matrix of cross price response coefficients demonstrate that our estimator is consistent and derive its asymptotic distribution our semiparametric approach allows us to discriminate among models of global competition in which all products compete with all others and local competition in which products compete only with their neighbors we apply our semiparametric estimator to data from u s wholesale gasoline markets and find that in this market competition is highly localized

oligopolistic competition and the optimal provision of products this paper considers the theory of market versus optimal product diversity in the light of two recent advances in oligopoly theory the first is the development of discrete choice models to describe heterogeneous consumer tastes and the application of such models to oligopolistic competition the second advance is the proof that logconcavity of the consumer taste density guarantees the existence of a price equilibrium we analyze an oligopoly model with price competition and free entry taking explicit account of the integer constraint under the chamberlinian symmetry assumption that tastes are i i d we first show that logconcavity of the taste density implies there is excessive market provision of variety when each consumer buys one unit of the product from one of the firms we then show that this result extends to price sensitive individual demands by proving that the equilibrium number of firms is at least as great as that which would be provided at the second best social optimum subject to a zero profit constraint for firms our results call into question previous findings for representative consumer models that left open the possibility of insufficient product diversity

when is quality of financial system a source of comparative advantage abstract dominant theories of trade tend to ignore the role of finance as a source of comparative advantage on the other hand the finance literature places financial institutions as a driver of economic growth this paper unites these two competing schools of thought in a general equilibrium framework for economies with high quality institutions defined by the competitiveness of the financial sector the quality of corporate governance and the level of property rights protection finance is passive on the other hand for economies with low quality institutions the quality of the financial system is an independent source of comparative advantage interestingly the conventional measure of financial development the size of the financial market relative to gdp does not adequately capture the underlying quality of financial institutions in addition free trade may reduce the aggregate income in south financial capital tends to flow from south to north

bank privatization finance and growth abstract this paper examines whether privatizing state owned banks improves finance and economic growth to do so we exploit regional banking variations in russia induced by the idiosyncratic creation of specialized banks in the last years of the soviet union 1988 91 that were subsequently privatized starting in 1999 private banks including surviving spetsbanks emerged as an important source of external finance for private firms and households we document that the regional concentration of spetsbanks in the early years of the russian federation is orthogonal to economic fundamentals that are related to growth after the emergence of bank finance results indicate that while privatized banking increased lending significantly it did not increase economic growth however privatization did increase growth when banks retained fewer political connections and when regional property rights were better protected highlighting the importance of both factors

finance and the sources of growth the authors evaluate whether the level of development in the banking sector exerts a causal impact on economic growth and its sources total factor productivity growth physical capital accumulation and private saving they use 1 a pure cross country instrumental variable estimator to extract the exogenous component of banking development and 2 a new panel technique that controls for country specific effects and endogeneity they find that banks do exert a large causal impact on total factor productivity growth which feeds through to overall gdp gross domestic product growth the long run links between banking development and both capital growth and private savings are more tenuous

does local financial development matter we study the effects of differences in local financial development within an integrated financial market we construct a new indicator of financial development by estimating a regional effect on the probability that ceteris paribus a household is shut off from the credit market by using this indicator we find that financial development enhances the probability an individual starts his own business favors entry of new firms increases competition and promotes growth as predicted by theory these effects are weaker for larger firms which can more easily raise funds outside of the local area these effects are present even when we instrument our indicator with the structure of the local banking markets in 1936 which because of regulatory reasons affected the supply of credit in the following 50 years overall the results suggest local financial development is an important determinant of the economic success of an area even in an environment where there are no frictions to capital movements

law and finance at the origin what are the key determinants of financial development and growth a large literature debates the relative importance of countries legal and political environment in this paper i present evidence from ancient rome where an early form of shareholder company the societas publicanorum developed i show that the societas publicano rum flourished in a legally underdeveloped but politically supportive environment roman republic and disappeared when roman law reached its height of legal sophistication but the political environment grew less supportive roman empire in the roman case legal development appears to have mattered little as long as the law as practiced was flexible and adapted to economic needs the law as practiced in turn reflected prevalent political interests after discussing parallels in more recent history i provide a brief overview of the literature on law and finance and on politics and finance the historical evidence suggests that legal systems may be less of a technological constraint for growth than previously thought at least at the origin