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 under consumer loss aversion we address the effect of expectation based consumer loss aversion on firm strategy in imperfect competition consumers are fully informed about match value and price at the moment of purchase however some consumers are initially uninformed about their tastes and form a reference point consisting of an expected match value and price distribution whereas others are perfectly informed all the time we show that if firms have symmetric costs a larger share of informed consumers leads to a more competitive outcome the reverse holds if cost asymmetry in duopoly is sufficiently large

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

spot and forward volatility in foreign exchange this paper investigates the empirical relation between spot and forward implied volatility in foreign exchange we formulate and test the forward volatility unbiasedness hypothesis which is the volatility analogue to the extensively researched hypothesis of unbiasedness in forward exchange rates using a new data set of spot implied volatility quoted on over the counter currency options we compute the forward implied volatility that corresponds to the forward contract on future spot implied volatility known as a forward volatility agreement we nd statistically signi cant evidence that forward implied volatility is a systematically biased predictor that overestimates future spot implied volatility the bias in forward volatility generates high economic value to an investor exploiting predictability in the returns to volatility speculation and indicates the presence of predictable volatility term premiums in foreign exchange

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

price discrimination and retail configuration the hypothesis that price discrimination based on willingness to pay for quality can occur in multifirm markets is confirmed using microdata on gasoline retailing a test that discriminates between price structures associated with discrimination and with cost driven competitive differentials is developed and implemented with controls for variation in outlet and market characteristics a second test based on profitability variation rejects a competitive peak load pricing explanation for the observed price dispersion the data suggest that price discrimination at the retail level adds at least 9 a gallon to the average price of full service gasoline

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

the dynamics pattern of price dispersion in retail fuel markets abstract this paper empirically investigates the dynamics of price dispersion in retail fuel markets as a response to the corresponding wholesale price changes for this purpose we take advantage of a daily dataset of prices fixed by gas stations in two spanish regions it is consistently found that retail price dispersion is temporarily enlarged as a consequence of wholesale price increases while it is reduced due to decreases the presence of asymmetries in the short run dynamics is also revealed the impact of positive changes in the wholesale price is in the first days of adjustment clearly greater the dynamics pattern could be explained at least in part by the faster response of prices in the stations associated with the two vertically integrated companies that have the largest market share i e repsol and cepsa

empirical studies of gasoline retailing a guide to the literature abstract this paper surveys the empirical literature on gasoline retailing which has been growing rapidly over the last three decades possibly in response to antitrust and regulatory concerns and increased availability of pricing data studies of both pricing and non price decision variables are considered in general it is found that crude oil prices are the primary driver of national price movements over time however market structure has been identified as playing a role in price dynamics equilibrium selection and price differentials across markets and stations the economic literature emphasizes the importance of heterogeneity across stations and coordination problems faced by retailers several directions for future work are suggested including the development of theory and demand estimation using high frequency station level data

consumer search and dynamic price dispersion an application to gasoline markets this article studies the role of imperfect information in explaining price dispersion we use a new panel data set on the u s retail gasoline industry and propose a new test of temporal price dispersion to establish the importance of consumer search we show that price rankings vary significantly over time however they are more stable among stations at the same street intersection weestablishtheequilibriumrelationshipsbetweenpricedispersionandkeyvariables from consumer search models price dispersion increases with the number of firms in the market decreases with the production cost and increases with search costs

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

search costs and equilibrium price dispersion in auctions a leading explanation for price dispersion in posted price markets is search costs we incorporate this insight into a model of competing second price auctions similar to ebay by doing so we extend the narrow literature on competing auctions to capture price dispersion and grow the already large literature on price dispersion to include auctions we provide evidence on search costs and price dispersion using data collected from ebay identifying search costs by exploiting a discontinuity in the visibility of auctions due to ebay s search tool 1 we thank aaron bodoh creed greg lewis steve tadelis and various seminar participants for helpful comments nate woody for programming assistance and the cornell university institute for social sciences for financial support the views expressed herein are solely those of the authors and do not necessarily reflect those of the u s department of justice 1

environmental management under subnational institutional constraints this study uses the institutional perspective to examine the interaction effects between the subnational institutional context and firm level parameters on corporate environmental behaviors based on a unique cross sectional data set of private firms compiled from three different sources in china our results suggest that both enforcement stringency of environmental regulations at the provincial level and private firms foreign ownership negatively affect compensation fees which are levies charged for firms emissions enforcement stringency also moderates the firm level relationship between foreign ownership and compensation fees but such a cross level moderating effect holds only for private firms with non hmt hong kong macau or taiwan investments

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

bayes stein estimation for portfolio analysis in portfolio analysis uncertainty about parameter values leads to suboptimal portfolio choices the resulting loss in the investor s utility is a function of the particular estimator chosen for expected returns so this is a problem of simultaneous estimation of normal means under a well specified loss function in this situation as stein has shown the clas sical sample mean is inadmissible this paper presents a simple empirical bayes estimator that should outperform the sample mean in the context of a portfolio simulation analysis shows that these bayes stein estimators provide significant gains in portfolio selection problems

shell shocked the impact of foreign entry on the gasoline retail market in china abstract since joining the wto in 2001 restrictions on foreign entry into china s energy sector have been steadily reduced we investigate the impact of royal dutch shell s entry on the pricing behavior of three varieties of gasoline in the retail market of china using a difference in difference pairwise estimator we show that a year after entry the average absolute price differential of gasoline between two cities increased by around 1 4 before falling the following year in other words shell s entry caused prices to diverge but only for a short period of time the largest price effect was found for highly refined fuels in western cities similar results are found when we examine the effect of entry of the top four foreign retailers policy implications are discussed

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

retail gasoline price dynamics and local market power using monthly data from the 48 contiguous states except nevada for the 1988 2002 period it is shown that retail gasoline prices respond faster to wholesale price increases than to equivalent wholesale price decreases moreover markets with high average retail wholesale margins experience a slower adjustment and a more asymmetric response since gasoline is the only variable input average margins in a state likely reflect the degree of retail market power this suggests that sticky prices and response asymmetries in the gasoline market are at least partially a consequence of retail market power

extending the bargaining power model explaining bargaining outcomes among nations mnes and ngos participants in international bargaining include different types nation states mnes ngos and multilateral organizations and different numbers of these actors our theoretical contribution is to extend the bargaining power paradigm with a framework that models bargaining in this complex environment as a network the configuration of supports and constraints among all participating actors in the bargaining environment is captured in the structure of the network antecedents of an actor s bargaining influence in the network include the actor s basis of power network position bargaining outcome preferences and motivation to influence bargaining the network bargaining power nbp model uses network theory to build upon and integrate insights from previous literature in a way that allows us to simultaneously apply these different insights to explain bargaining outcomes these insights include effects of coalitions strategies of less powerful actors leveraging more powerful allies integration of international and domestic politics and applicability to mne related issues beyond fdi finally we illustrate nbp in a scenario of privatized utilities in the dominican republic in which the bargaining power outcome predicted by nbp differs from that of the canonical bargaining power perspective

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

sparse and stable portfolio selection with parameter uncertainty a number of alternative mean variance portfolio strategies have been recently proposed to improve the empirical performance of the classic markowitz mean variance framework designed as remedies for parameter uncertainty and estimation errors in portfolio selection problems these alternative portfolio strategies deliver substantially better out of sample performance in this article we first show how to solve a general portfolio selection problem in a linear regression framework then we propose to reduce the estimation risk of expected returns and the variance covariance matrix of asset returns by imposing additional constraints on the portfolio weights with results from linear regression models we show that portfolio weights derived from new approaches enjoy two favorable properties sparsity and stability moreover we present insights into these new approaches as well as their connections to alternative strategies in literature four empirical studies show that the proposed strategies have better

corporate environmental citizenship variation in developing countries an institutional framework this study focuses on why some companies in developing countries go beyond environmental regulations when implementing their corporate environmental social responsibilities or citizenship behavior drawing mainly upon the new institutional theory this study develops a conceptual framework to explain three institutional factors companies market orientations industrial characteristics and corporate identities accordingly we suggest that companies from developing countries that are oriented to markets in developed countries operate in highly concentrated industries and have missionary identities adopt corporate environmental citizenship behavior by going beyond environmental regulations the study also discusses the theoretical policy and managerial implications of the conceptual framework

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

a theory of quality related differences in retail margins why there is a premium on premium gasoline this paper develops a theory of vertical and horizontal product differentiation to explain observed price cost margin differentials for goods that differ in quality the difference in price cost margins between the high and low quality goods is shown to depend positively on consumers average valuation for incremental increases in quality and positively on the distance to each competitor s closest rival these predictions are largely supported using an extensive station level data set of premium and regular unleaded gasoline prices from the los angeles basin area from 1992 1995

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

the spanish retail petroleum market new patterns of competition since the liberalization of the industry in this paper we study the recent development of the spanish automotive fuels market in the context of a long process of liberalization and competition our aims are twofold first to overview the market s current patterns of competition while taking into account the political structural and strategic aspects that have marked the industry s recent evolution second to study in depth one competitive strategy that nowadays significantly influences competition and final prices the vertical relationships between operators and service stations our analysis draws attention to several indicators that may demonstrate the success of the opening and liberalization process increased levels of competition have stimulated the sector s growth development and modernization and given national firms an excellent platform for competing with newcomers furthermore studying the vertical agreements has produced interesting results we have found that relative price differences among brands increase in line with perceived quality differences and that the vertical separation of refineries and retailers eases price competition in the final market the empirical evidence was backed up with a database of 4164 spanish service stations

an international multilevel analysis of product innovation this paper studies multilevel determinants of product innovation by incumbent firms with data from 68 countries covering over 25 000 firms in eight manufacturing sectors the author assesses the predictions of interdisciplinary research on firm behavior in different contexts which have emphasized that product innovation is affected by three sets of factors the extent of global engagement information spillovers and market structure the empirical model of the probability of observing a product innovation a probit model by a firm considers three levels of analysis firm characteristics industry characteristics and the national context the econometric evidence supports the global engagement and information spillovers hypotheses but the evidence on the role of market structure is mixed regarding global engagement the evidence suggests that product innovation by incumbent firms is positively correlated with the act of investing in r d and licensing of foreign technologies and country level average import tariffs reduce the probability of product innovation regarding information spillovers the evidence also shows that a country s patent density is positively correlated with product innovation in contrast concerning the market structure hypotheses country level indicators of business density and of policy induced costs of entry are not robustly correlated with product innovation

an evolutionary approach to understanding international business activity the co evolution of mnes and the institutional environment this paper examines the co evolution of mne activities and institutions external and internal to the firm we develop a theoretical framework for this analysis that draws on the more recent writings of douglass north on institutions as a response to complex forms of uncertainty associated with the rise in global economic interconnectedness and of richard nelson on the co evolution of technology and institutions we link historical changes in the character of mne activities to changes in the institutional environment and highlight the scope for firm level creativity and institutional entrepreneurship that may lead to co evolution with the environment we argue that the main drivers for institutional entrepreneurship are now found in the increasing autonomy of mne subsidiaries thus mne agency derives from more decentralized forms of experimentation in international corporate networks which competence creating nodes of new initiatives can co evolve with local institutions unlike most other streams of related literature our approach connects patterns of institutional change in wider business systems with more micro processes of variety generation and experimentation within and across individual firms this form of co evolutionary analysis is increasingly important to understanding the interrelationships between mne activities and public policy

is more competition always better an experimental study of extortionary corruption using a laboratory experiment we assess whether increasing competition among public officials reduces extortionary corruption we find that increasing the number of providers has no effect on bribe demands when citizens search costs are high but it increases corruption when search costs are low the effect is absent in a parallel setting framed as a standard market which we attribute to citizens using a nonsequential search strategy as opposed to sequential search in the corruption setting we conclude that efforts to reduce search costs such as infrastructure investments are preferable to anti corruption policies aimed at increasing the number of providers jel d73 d49 c91

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

advertising intensity and welfare in an equilibrium search model i analyze an equilibrium search model in a duopoly setting with bilateral heterogeneities in production and search costs in which firms can advertise by announcing price i compare the market advertising level to the socially optimal level where i find that costly search can improve welfare and that firms may under or over advertise relative to the social optimum depending on the costs of search the results suggest that in markets with sufficiently low search costs firms are likely over advertising relative to the socially optimal level and vice versa for markets with sufficiently high search costs

nonsequential search equilibrium with search cost heterogeneity we generalize the model of burdett and judd 1983 to the case where an arbitrary finite number of firms sells a homogeneous good to buyers who have heterogeneous search costs we show that a price dispersed symmetric nash equilibrium always exists numerical results show that the behavior of prices and consumer surplus with respect to the number of firms hinges upon the nature of search cost dispersion when search costs are relatively concentrated entry of firms leads to lower average prices and greater consumer surplus however for relatively dispersed search costs the mean price goes up and consumer surplus may decrease with the number of firms

relationship between spatial agglomeration and hotel prices evidence from business and tourism consumers abstract in this paper we examine the relationship between number of local competitors and both the average and the dispersion of retail prices in urban hotels using a dataset from the metropolitan area of madrid spain by controlling for hotel characteristics and spatial factors we obtained results for each of the days in one week in line with predictions derived from the traditional monopolistic approach empirical results consistently indicate that a greater density of competitors implies a lower average and less dispersion of local prices moreover we found evidence which supports the idea that the effect of local agglomeration on average prices is particularly weaker at weekends this in turn indirectly suggests that within the metropolitan area there is a greater degree of substitution in hotel locations for tourism consumers than for business consumers

gasoline price dispersion and consumer search evidence from a natural experiment the vast majority of empirical studies examining the link between consumer search and price dispersion focus on how changes in consumer search impact price dispersion this article does the reverse it examines how a shock to price dispersion impacts consumer search a direct measure of search is used and an exogenous shock to price dispersion is found in a refinery fire that caused decades old retail gasoline price cycles and the nonlinear high frequency price dispersion pattern generated by them to stop identifying effects from this shock the results show a substantial response of consumer search to changes in price dispersion

testing the bargaining hypothesis in the manufacturing sector in developing countries the bargaining power model of hc mnc host country multinational corporation interaction conceives of economic nationalism in terms of rational self interest and assumes both inherent conflict and convergent objectives in extractive industries there is strong evidence that outcomes are a function of relative bargaining power and that as power shifts to developing hcs over time the bargain obsolesces a cross national study of the bargaining model using data from 563 subsidiaries of u s manufacturing firms in forty nine developing countries indicates that while the bargaining framework is an accurate model of mnc host country relationships manufacturing is not characterized by the inherent structurally based and secular obsolescence that is found in the natural resource industries shifts in bargaining power to hcs may take place when technology is mature and global integration limited in industries characterized by changing technologies and the spread of global integration the bargain will obsolesce very slowly and the relative power of mncs may even increase over time

political connections and industrial pollution evidence based on state ownership and environmental levies in china we investigate how state involvement in the ownership of non listed entrepreneurial firms affects pollution fees levied by national and provincial governments in china environmental levies while the national government sets minimum environmental standards provincial governments can enact requirements that exceed these minimums and they are largely responsible for enforcing even the national standards so environmental levies can measure concessions that provinces make to encourage development and employment furthermore state ownership is a good proxy for a firm s political connections which can influence the relationship between the firm and the environmental authorities we find that firms with state ownership pay lower environmental levies which indicates that concessions are made for political or economic purposes however these concessions are conditional on the level of development of the province offering them with better developed provinces providing fewer concessions

consumer and competitor reactions evidence from a field experiment abstract in response to a price change by a single seller it is common for the density of sellers in the market to influence both the quantity response of consumers and the price response of other sellers using field experiment data collected around a series of exogenously imposed price changes we find that an individual retailer with a larger number of competitors faces a more responsive demand this finding is fundamental to a predicted inverse relationship between market prices and the number of competitors we also examine the reaction of rival stations to exogenous price changes and find that the magnitude of a competitor s response is inversely related to the density of stations in the market

semi nonparametric estimation of consumer search costs this paper studies the estimation of the distribution of non sequential search costs we show that the search cost distribution is identified by combining data from multiple markets with common search technology but varying consumer valuations firms costs and numbers of competitors to exploit such data optimally we provide a new method based on semi nonparametric estimation we apply our method to a dataset of online prices for memory chips and find that the search cost density is essentially bimodal such that a large fraction of consumers searches very little whereas a smaller fraction searches a relatively large number of stores copyright c 2012 john wiley sons ltd

market liberalization and firm performance during china s economic transition this paper examines the impact of market liberalization on firm performance through institutional changes during the economic reform in china the conceptualization focuses on the decentralization of control ownership restructuring and industrial policy as the primary institutional changes to implement market liberalization in china these institutional changes affect firm performance by shaping managerial incentives affecting transaction and agency costs and making selective resource allocations across and within industries using a large scale data set including 23 577 firms between 1992 and 1996 the study examines how market liberalization affects the profitability and productivity of chinese firms and the relationship between ownership change and the performance of state owned enterprises

globalization and the environment determinants of firm self regulation in china critics assert that globalization is detrimental to the environment because it encourages location of polluting industries in countries with low environmental regulations we suggest that globalization might also have positive environmental effects because global ties increase self regulation pressures on firms in low regulation countries using survey data from firms in china we find that multinational ownership multinational customers and exports to developed countries increase self regulation of environmental performance

foreign direct investment in china recent trends and current policy issues by john henley colin kirkpatrick georgina wilde john henley is professor of international management at the department of business studies university of edinburgh colin kirkpatrick is professor of development economics at the institute for development policy and management university of manchester georgina wilde was previously regional director asia pacific with the economist intelligence unit london and is now an independent consultant the paper has been developed from presentations made at a seminar on investment and development in central and western china wuhan hubei province pr china november 1997 and was also presented at the development studies association trade and industry study group meeting march 1998 the comments of participants at both meetings and of two anonymous referees are gratefully acknowledged

the effect of group size and asymmetries on the incentive to reveal group specific information in this paper i examine how firms incentives to differentiate their products through the revelation of truthful information about product attributes varies with the distribution of consumer preferences for those attributes i show that information will tend to be provided for large groups even absent scale economies in producing that information in addition the relative sizes of the groups whose estimates of product quality change positively vs negatively i e the degree of asymmetry by the information is likewise an important determinant of its profitability

international pricing in a generalized model of ideal variety we examine international markups and pricing in a generalized version of lancaster s ideal variety model in this model entry causes crowding in variety space so that the marginal utility of new varieties falls as market size grows crowding is partially offset by income effects as richer consumers will pay more for varieties closer matched to their ideal types we show theoretically and confirm empirically that declining marginal utility of new varieties results in a higher own price elasticity of demand and lower prices in large countries and a lower own price elasticity of demand and higher prices in rich countries the model is also useful for generating facts from the literature regarding cross country differences in the rate of variety expansion

information in cournot signaling with incomplete control abstract we embed signaling in the classical cournot model in which several firms sell a homogeneous good the quality is known to all the firms but only to some buyers the quantity setting firms can manipulate the price to signal quality because there is only one price in a market for a homogeneous good each firm incompletely controls the price signal through the quantity decision we characterize the unique signaling cournot equilibrium in which the price signals quality to the uninformed buyers we then compare the signaling cournot equilibrium with the full information cournot equilibrium signaling is shown to increase the equilibrium price moreover under certain conditions regarding the composition of buyers the number of firms and the distribution of costs across firms the effects of signaling and market externality cancel each other in other words the profits under signaling cournot equal the profits of a cartel in a full information environment

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

complementary resources and capabilities for an ethical and environmental management a qual quan study managers commitment to contribute to sustainable development holds the key to their long term business success and may be a source of competitive advantage the managerial perception of business ethics is influenced by the level of moral development and personal characteristics of managers these perceptions are also shaped by forces existing in the environment of the firm including available resources societal expectations sector and regulations the resource based perspective can thus contribute to the analysis of ethical issues offering important insights on how they can influence the environmental strategy of the firm the findings of this study show that firm resources have a strong influence on business managers ethical attitudes in addition the application of resource based rationales to ethical issues can be justified in the following several ways it influences a managerial perception of natural environment as a competitive opportunity it requires investments of financial and human resources flexibility and speed in the adaptation to environmental changes and it creates new resource based opportunities through changes in prevention pollution technology policy process and market forces

the social and environmental responsibilities of multinationals evidence from the brent spar case this paper argues that multinational corporations face levels of environmental and social responsibility higher than their national counterparts drawing on the literatures of stakeholder salience corporate reputation management and evidence from the confrontation between shell and greenpeace over the brent spar in 1995 two mechanisms international reputation side effects and foreign stakeholder salience are identified and their contribution in creating an environment more restrictive in terms of environmental and social responsibility is elaborated on the paper concludes with discussing the links of the work presented here with a number of ongoing debates within the filed of international business ethics and the managerial implications of the two mechanisms identified

the sampling error in estimates of mean variance efficient portfolio weights this paper presents an exact finite sample statistical procedure for testing hypotheses about the weights of mean variance efficient portfolios the estimation and inference procedures on efficient portfolio weights are performed in the same way as for the coefficients in an ols regression ols t and f statistics can be used for tests on efficient weights and when returns are multivariate normal these statistics have exact t and f distributions in a finite sample using 20 years of data on 11 country stock indexes we find that the sampling error in estimates of the weights of a global efficient portfolio is large

costly buyer search in a differentiated products model an experimental study this study examines whether the content of buyer information and the timing of its dissemination affects seller market power we construct laboratory markets with differentiated goods and costly buyer search in which sellers simultaneously post prices the experiment varies the information on price or product characteristics that buyers learn under different timing assumptions pre and postsearch generating four information treatments theory predicts that price information lowers the equilibrium price but information about product characteristics increases the equilibrium price that is contrary to intuition the presence of informed buyers may impart a negative externality on other uninformed buyers data support the model s negative externality result when sellers face a large number of robot buyers that are programmed to search optimally observed prices conform to the model s comparative statics and are broadly consistent with predicted levels with human buyers however excessive search instigates increased price competition and sellers post prices that are significantly lower than predicted

the role of information in retail gasoline price dispersion abstract collecting information on prices is a costly endeavor the cost depends on the relative ease with which those prices can be collected and in many retail gasoline markets there is a substantial divide in the ease of collecting information with regular grade gasoline on one side of the divide and midgrade and premium grade gasoline on the other regular grade prices are prominently displayed on large signboards in front of gasoline stations while the prices of higher octane grades except where required by law are rarely displayed in this article the effects of differential by grade price information on search and gasoline price dispersion are examined a rank reversal test is used to test whether the observed grade specific price dispersion is consistent with search or non search related causes and finding the former a series of tests are presented to test for the effect of price information and other leading hypotheses a significantly concave curvature in the price dispersion coefficients across the three grades supports a price information hypothesis detailed socioeconomic data on consumers spatially matched to the stations they are most likely to patronize shows that income is a secondary factor implications for policy are discussed

informing consumers about their own preferences we analyze a model of monopolistic price discrimination where only some consumers are originally sufficiently informed about their preferences e g about their future demand for a utility such as electricity or telecommunication when more consumers become informed we show that this benefits also those consumers who remain uninformed as it reduces the firm s incentives to extract information rent by reducing the costs of information acquisition or forcing firms to supply consumers with the respective information about past usage policy can further improve welfare as contracts become more efficient the last observation stands in contrast to earlier findings by cremer and khalil american economic review 1992 where all consumers are uninformed

search costs and equilibrium price dispersion in auction markets abstract a leading explanation for price dispersion in posted price markets is search costs we incorporate this insight into a model of competing second price auctions similar to ebay by doing so we extend the narrow literature on competing auctions to capture price dispersion and grow the already large literature on price dispersion to include auctions we provide evidence on search costs and price dispersion using data collected from ebay identifying search costs by exploiting a discontinuity in the visibility of auctions due to ebay s search tool

pricing product diversity and search costs a bertrand chamberlin diamond model we study price competition in the presence of search costs and product differentiation the limit cases of the model are the bertrand paradox the diamond paradox and chamberlinian monopolistic competition market prices rise with search costs and decrease with the number of firms prices may initially fall with the degree of product differentiation because more diversity leads to more search and more competition equilibrium diversity rises with search costs while the optimum level falls so entry is excessive the market failure is most pronounced for low preference for variety and high search costs

an economic evaluation of empirical exchange rate models this paper provides a comprehensive evaluation of the short horizon predictive ability of economic fundamentals and forward premiums on monthly exchange rate returns in a framework that allows for volatility timing we implement bayesian methods for estimation and ranking of a set of empirical exchange rate models and construct combined forecasts based on bayesian model averaging more importantly we assess the economic value of the in sample and out of sample forecasting power of the empirical models and find two key results 1 a risk averse investor will pay a high performance fee to switch from a dynamic portfolio strategy based on the random walk model to one that conditions on the forward premium with stochastic volatility innovations and 2 strategies based on combined forecasts yield large economic gains over the random walk benchmark these two results are robust to reasonably high transaction costs

consumer information and firm pricing negative externalities from improved information we analyze the effect of consumer information on firm pricing in a model where consumers search for prices and matches with products we consider two types of consumers uninformed consumers do not know in advance their match values with firms whereas informed consumers do prices are lower the greater the proportion of uninformed consumers hence uninformed consumers exert a positive externality on the others in contrast to standard results this leads to socially excessive investment in gathering prior information when aggregate demand is price sensitive

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

equilibrium price dispersion under demand uncertainty the roles of costly capacity and market structure when capacity is costly and prices are set in advance firms facing uncertain demand will sell output at multiple prices and limit the quantity available at each price i show that the optimal price strategy of a monopolist and the unique pure strategy nash equilibria of oligopolists both exhibit intrafirm price dispersion moreover as the market becomes more competitive prices become more dispersed a pattern documented in the airline industry while generating similar predictions the model differs from the revenue management literature because it disregards market segmentation and fare restrictions that screen customers

market power and second degree price discrimination in retail gasoline markets abstract empirical evidence of quality based second degree price discrimination is scarce the co existence of regular grade 10 ethanol blended gasoline e10 and regular grade non blended gasoline e0 in a major metropolitan city allows for second degree price discrimination to be examined while eliminating the issue of endogenous product differentiation because the two blends of gasoline are near perfect substitutes using a unique data set including daily price information for 402 retailers that sell only e0 gasoline only ethanol blended e10 gasoline or both blends simultaneously i find evidence that retailers use second degree price discrimination to segment the population between perceived lower and higher quality gasoline despite the fact that both blends can safely be used in nearly all vehicles additionally i uncover two elasticities of demand for gasoline and discuss the welfare effects of price changes and market segmentation

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

price price dispersion and number of sellers at a low entry cost shopbot abstract shopbots function as market intermediaries by providing unprecedented quantities of information to buyers and sellers this paper explores the role of market structure across shopbot mediated markets using an unbalanced panel of 399 digital camera models it extends prior work by using an ultra low entry cost site additionally allowing controls for life cycle and popularity effects we find a robust negative relationship between seller number and price which persists even as markets become crowded with sellers the results are capable of either an scp or a carlson mcafee heterogeneous cost interpretation but observed entry behaviour here is consistent with the latter

the adaptive markets hypothesis evidence from the foreign exchange market we analyze the intertemporal stability of excess returns to technical trading rules in the foreign exchange market by conducting true out of sample tests on previously studied rules the excess returns of the 1970s and 1980s were genuine and not just the result of data mining but these profit opportunities had disappeared by the early 1990s for filter and moving average rules returns to less studied rules also have declined but have probably not completely disappeared high volatility prevents precise estimation of mean returns these regularities are consistent with the adaptive markets hypothesis lo 2004 but not with the efficient markets hypothesis

comparative advertising disclosing horizontal match information improved consumer information about horizontal aspects of products of similar quality leads to better consumer matching but also to higher prices so consumer surplus can go up or down while profits rise with enough quality asymmetry though the higher quality and hence larger firm s price falls with more information so both effects benefit consumers this occurs when comparative advertising is used against a large firm by a small one comparative advertising as it imparts more information therefore helps consumers although it also improves the profitability of the small firm overall welfare goes down because of the large loss to the attacked firm

the influence of hymer s dissertation on the theory of foreign derect investment the great contribution of stephen hymer s seminal dissertation 1960 was to escape from the intellectual straightjacket of neoclassical type trade and financial theory and move us towards an analysis of the multinational enterprise mne based upon industrial organization theory the magnitude of this breakthrough can be put into perspective by considering the state of the art when hymer wrote twenty five years ago in 1960 the prevailing explanation of international capital movements relied exclusively upon a neoclassical financial theory of portfolio flows in this frictionless world of perfect competition with no transaction costs capital moves in response to changes in interest rate or profit differentials see carl iversen 1936 according to this arbitrage theory capital is assumed to be transacted between independent buyers and sellers that is there is no role for the mne at the time there was no separate theory of foreign direct investment fdi the work did not even ask the question of why is there fdi despite the evidence of sectoral cross investments and the existence of large mnes with intra industry trade if anything the early work on fdi focused upon the where of investment in a particular nation or industry for example dunning 1958 was chiefly interested in explaining u s fdi in britain there was little interest in understanding the reasons for the mne or the nature of its operations the pioneering conceptual insight of hymer was to break out of the arid mold of international trade and investment theory and focus attention upon the mne per se this permits us to treat fdi as a modality by which firms extend their territorial horizons abroad the unique feature of fdi is a mechanism by which the mne maintains control over productive activities outside its national boundaries that is fdi means international production in this view fdi is more than a process by which assets or claims are exchanged internationally see robert aliber 1970 1983 hymer s great insight was in focusing attention upon the mne as the institution for international production rather than international exchange until hymer articulated the process of fdi as an international extension of industrial organization theory it was not possible to understand why the mne transfers intermediate products such as knowledge or technology among its units across different nations while still retaining property rights over such assets today it is widely recognized that the theory of fdi i e international production is primarily about the transfer of nonfinancial and ownershipspecific intangible assets by the mne which needs to appropriate and control the rate of use of its internalized advantage s see rugman 1981 david teece 1981 1982 richard caves 1982 and mark casson 1983 in this paper we first acknowledge hymer s contribution to the theory of fdi and then move on to reinterpret his dissertation in the light of the modern theory of the mne we tdiscussants raymond vernon harvard university robert z aliber university of chicago paul streeten boston university

empirical investigation of retail fuel pricing the impact of spatial interaction competition and territorial factors abstract this paper explores the determinants of fuel prices by proposing an empirical framework that integrates three kinds of influencing factors spatial interaction competition and territorial factors for competition we define a general variable the presence of competing stations within a radius and two specific variables the presence of low cost stations and the presence of same brand stations we proceed with a step wise adjustment of the radius by gradually increasing it to evaluate the spatial scope of different competition effects using data on prices of fuel stations in rome italy we estimate spatial econometric models that provide evidence of spatial dependence in price between stations we also find that competition affects prices but the relevance of its impact depends on radius length finally the territorial factors remarkably influence prices if these factors are introduced in the model the magnitude of spatial parameters weakens allowing to accurately assess the intensity of spatial dependence

market structure and market performance in e commerce we investigate the effect of market structure on market performance in the market for consumer electronics we exploit product life cycle information to build an instrumental variable for the number of firms in a market a variable which hitherto had to be treated as exogenous in comparable studies on seller behavior in e commerce we combine data from austria s largest online site for price comparisons with retail data on wholesale prices provided by a major hardware producer for consumer electronics we observe input prices of firms and all their moves in the entry and the pricing game using this information for 70 digital cameras we generate instrumenting is particularly important for estimating the effect of competition on the markup of the price leader

the distribution of foreign direct investment in china foreign direct investment fdi has played a major role in china s push toward a market oriented economy recent inflows account for 40 percent of combined flows of fdi to all developing countries making china the biggest developing country fdi recipient this record is impressive but certain problems must be overcome if fdi is to continue to help sustain the country s record growth rate and further its economic development for one thing fdi in china is highly concentrated geographically and its sector distribution is highly uneven the authors empirically analyze the geographic determinants of fdi in china they find that fdi s geographical distribution in china is determined mostly by gnp infrastructure development level of general education and coastal location although the sectoral distribution of fdi is coming into line with the rest of the world in the past fdi has been biased toward speculative types of investment especially in the real estate sector

how does environmental corporate social responsibility matter in a dysfunctional institutional environment evidence from china drawing on institutional and signaling theories this study examines how environmental corporate social responsibility ecsr affects firm performance in a dysfunctional institutional environment we extend the ecsr literature by suggesting that ecsr indirectly influences firm performance through the mediating effects of business and political legitimacy based on a dataset of 238 firms in china we find that ecsr affects business and political legitimacy followed by firm performance moreover legal incompleteness weakens and legal inefficiency strengthens the effects of ecsr on business and political legitimacy

is the german retail gasoline market competitive a spatial temporal analysis using quantile regression we explore whether noncompetitive pricing prevails in germany s retail gasoline market by examining the influence of the crude oil price on the retail gasoline price focusing specifically on how this influence varies according to the brand and to the degree of competition in the vicinity of the station our analysis identifies several factors other than cost including the absence of nearby competitors and regional market concentration that play a statistically significant role in mediating the influence of the oil price on the retail gas price suggesting moderate price setting power among stations

can prominence matter even in an almost frictionless market consumer search on the internet is rarely random sponsored links appear higher up a webpage and consumers often click them firms also bid aggressively for these prominent positions at the top of the page but why should prominence matter when visiting an additional website is almost costless i present a model in which consumers know their valuations for the products offered in the market but do not know which retailer sells which product i show that a prominent retailer earns significantly more profit than other firms even when the cost of searching websites and comparing products is essentially zero

firm size distribution testing the independent submarkets model in the italian motor insurance industry this paper tests the presence of multiple independent submarkets in the italian motor insurance industry independence is motivated by administrative boundaries among provinces and by further locational reasons we find that the independence effects are sufficient to induce a minimum degree of inequality in the size distribution of firms once submarkets are aggregated these results are fully consistent with the predictions of sutton 1998 we also show that the degree of skewness in the firms size distribution is related to characteristics such as the population living in an area its density and the riskiness of a submarket