energy efficiency investments in the context of split incentives among french households the residential sector offers considerable potential for reducing energy use and greenhouse gas ghg emissions particularly through energy efficient renovations the objective of this study is twofold first i aim to provide initial empirical evidence of the extent to which split incentives between landlords and tenants may lead to underinvestment second i investigate the influence of tax credits and energy burdens on energy efficiency expenditures given the complexity of studying the decision to invest in energy saving renovations i use a bivariate tobit model to compare decisions about energy efficient works and repair works even when the renovation expenditures seem quite similar the analysis shows that tenants are doubly penalized they have high energy expenditures due to energy inefficient building characteristics and because they are poorer than homeowners they are unable to invest in energy saving systems the results also confirm that tax credits are ineffective in the split incentives context in terms of public policy the government should focus on low income tenants and mandatory measures such as minimum standards seem appropriate financial support from a third party financer also might be a solution

the impact of climate on the law of one price a test using north american food prices from the 1920s using grocery price data for over 100 urban locations across the us and canada from the 1920s we show that deviations from the law of one price lop were strongly related to climate differences the effect of climate has a large impact on the elasticity of deviations from lop with respect to distance while having no impact on the border effect we then test a counterfactual to show that the relationship between deviations from lop and temperature does not hold when historical temperature data are replaced with contemporary this is evidence that climate impacts production l impact du climat sur la loi du prix unique un test utilisant les prix de la nourriture en amerique du nord dans les annees 1920 a l aide de donnees sur les prix de la nourriture dans les epiceries dans plus d une centaine de villes aux etats unis et au canada dans les annees 1920 on montre que les deviations par rapport a la loi du prix unique lpu sont fortement reliees aux differences dans le climat l effet du climat a un grand impact sur l elasticite des deviations par rapport a la lpu par rapport a la distance mais aucun impact sur l effet de frontiere on utilise alors un test contrefactuel pour montrer que la relation entre les deviations par rapport a la lpu et la temperature ne tient pas quand on remplace les temperatures historiques par les temperatures contemporaines ceci montre que le climat a un impact sur la production

trade costs and deviations from the law of one price the link between relative prices across countries and trade costs requires a theoretical foundation that is absent in the literature to date empirical tests on the law of one price are based on an arbitrage equation which is of very limited relevance in understanding this link the application of a new set of arbitrage equations to the tin trade market yields results that are consistent with our theoretical expectations we find evidence in favor of the law of one price between the united states and japan however evidence of price discrimination is also found for the los angeles market

a test of the law of one price in retail banking this paper investigates the level and the determinants of retail banking interest rate differences among spanish banks in the period 1989 2003 we find that the interest rates of twenty five different bank loan and deposit products adjust rather rapidly to their long term values in response to external shocks as the relative version of the law of one price predicts but the evidence runs contrary to the absolute version of the law credit risk premium part of the marginal cost of the loans granted by a particular bank is an important source of interest rate dispersion across banks and loan products both before and after spain joined the euro zone therefore differences in credit risk policies across banks must be taken into account when forming expectations about european retail banking integration

a model of residential demand for electricity using a national household sample abstract using a three equation model demand price appliance stock index and a current national household data set this study develops partial and total elasticity estimates for the usa partial elasticities are 0 102 for income and 0 193 for price while total elasticities are 0 410 for income and 1 403 for price

border region panel evidence on ppp deviations this article examines prices for 32 identical menu items sold by restaurant franchises operating on both sides of the border between el paso in the us and ciudad juarez in mexico from july 1997 to june 2008 the relationship between real exchange rate rer volatility and the degree of price convergence is examined within a panel data context the city pair and goods selected provide a unique experiment in which distance tradability and industry considerations are set aside and the extent of rer volatility is the only factor to influence price convergence we find nonmonotonic relationships between mean reversion and rer volatility very fast adjustments for both low and high volatility panels of goods between 1 and 2 months and slower half lives between 3 and 4 months at moderate levels of uncertainty these figures are however substantially smaller than the 6 or 7 months reported in previous research for general us mexico goods suggesting the very strong price convergence observed along the us m

a portfolio view of consumer credit abstract to compute risk adjusted returns and gauge the volatility of their portfolios lenders need to know the covariances of their loans returns with aggregate returns we use unique credit bureau data to measure individuals covariance risk i e the covariance of their default risk with aggregate consumer default rates and more generally to analyze the distribution of credit including the effects of credit scores we find significant heterogeneity in covariance risk across consumers also the amount of credit they obtain significantly increases with their credit scores and decreases with their covariance risk especially revolving credit though the effect of covariance risk is smaller

some pitfalls in testing the law of one price in commodity markets abstract several articles find no support for the lop in commodity markets a few articles find some support rejecting the lop would strike at the heart of economic theory rejection would suggest that firms do not maximize wealth and households do not maximize utility our objective is to show how four common pitfalls can cause tests of the lop to fail when in fact the lop holds all tests that fail to support the lop fall in to at least two pitfalls all of these pitfalls are the result of ignoring important practical implications of arbitrage

international prices costs and markup differences relative cross border retail prices in a common currency comove closely with the nominal exchange rate using product level prices and wholesale costs from a grocery chain operating in the united states and canada we decompose this variation into relative costs and markup components the high correlation of nominal and real exchange rates is driven mainly by changes in relative costs national borders segment markets retail prices respond to changes in costs in neighboring stores within the same country but not across the border prices have a median discontinuous change of 24 percent at the border and 0 percent at state boundaries jel f31 l11 l81

policy options for the split incentive increasing energy efficiency for low income renters the split incentive problem concerns the lack of appropriate incentives to implement energy efficiency measures in particular low income tenants face a phenomenon of energy poverty in which they allocate significantly more of their household income to energy expenditures than other renters this problem is substantial affecting 1 89 of all united states energy use if effectively addressed it would create a range of savings between 4 and 11 billion dollars per year for many of the nation s poorest residents we argue that a carefully designed program of incentives for participants including landlords in conjunction with a unique type of utility managed on bill financing mechanism has significant potential to solve many of the complications we focus on three kinds of split incentives five concerns inherent to addressing split incentive problems scale endurance incentives savings political disfavor and provide a detailed policy proposal designed to surpass those problems with a particular focus on low income tenants in a u s context

the purchasing power parity persistence paradigm abstract rogoff journal of economic literature 1996 34 647 668 describes the remarkable consensus of 3 5 year half lives of purchasing power parity deviations among studies using long horizon data these studies however focus on rejections of unit roots in real exchange rates and do not use appropriate techniques to measure persistence our half life estimates explicitly account for serial correlation sampling uncertainty and most importantly small sample bias calculating confidence intervals as well as point estimates for long horizon and post 1973 data we find that even though most of the point estimates lie within the 3 5 year range univariate methods provide virtually no information regarding the size of the half lives

on the internal contradictions of the law of one price as stated originally the venerable law of one price succinctly describes long run equilibrium in a perfectly competitive market the law was later amended defining a market as the geographic area within which the same thing sells for the same price at the same time allowance being made for transportation costs modified in that way the law has two plausible interpretations by one interpretation every production site is a market by the other prices in fact do not differ by transportation costs the transportation cost amendment thus introduces internal contradictions that render the revised law of one price either useless or wrong jel d40 l10 a market according to the masters is the area within which the price of a commodity tends to uniformity allowance being made for transportation costs that is two places are in the same market for a good if the prices at the two places differ by transportation costs stigler 1987 77 economic terms seem to pass in their historical development through a series of stages which without pretension to rigidness may be described as follows first no definition is given but it is assumed that every one has a sufficiently clear idea of the subject to make a formal definition unnecessary second a definition is attempted and a number of exceptional forms are noted third with the further increase of data the relative importance of the various forms changes confusion in discussion is introduced logomachy takes the place of constructive investigation fourth a complete classification of the forms embraced under the original term is made and problems are investigated with reference to these classes the bewildering vagueness of economic theory is largely due to the fact that the terms used are in all of these stages of development moore 1906 211 i introduction delineating the boundaries of markets engaged economists attention early on many product attributes are important to consumers but price is an objectively measurable margin along which rivalry is sharply engaged market prices transmit information about changing demand and supply conditions to buyers and sellers and widening price cost margins signal profit opportunities to which alert entrepreneurs respond price consequently has held center stage in economists attempts to define markets augustin cournot 1927 51 for instance wrote that a market is the entire territory of which the parts are so united by the relations of unrestricted commerce that prices take the same level throughout with ease and rapidity alfred marshall 1930 325 supplied a similar definition in his celebrated declaration that the more nearly perfect a market is the stronger is the tendency for the same price to be paid for the same thing at the same time in all parts of the market more recently joseph stiglitz 1993 19 summarized what he called the law of the single price stating that under this law there is a uniform price in the market and price differences are quickly eliminated by arbitrage 1 marshall 1930 325 introduced an important qualification however when he observed that but of course if the market is large allowance must be made for the expense of delivering the goods to different purchasers each of whom must be supposed to pay in addition to the market price a special charge on account of delivery that qualification subsequently found its way into stigler s price theory textbook quoted in the epigraph intentionally or not the law of one price was thereby converted into a law of different prices other economists subsequently added transaction costs and information costs to the list of caveats culminating in a multiplicity of prices nevertheless claimed to be consistent with the law of one price economics has few laws

low cost airlines and online price dispersion abstract this paper presents a new form of online pricing tactic where airlines post at the same time and for the same flight fares in different currencies that violate the law of one price unexpectedly for an online market price dispersion may be accompanied by a hidden discount that tends to persist in the period preceding a flight s departure the econometric analysis reveals that airlines post dispersive fares in less competitive routes with more heterogeneous demand furthermore temporal persistence of intra firm fare dispersion suggests that it is an equilibrium phenomenon engendered by the airlines need to manage stochastic demand conditions for a specific flight

measuring the covariance risk of consumer debt portfolios abstract the covariance risk of consumer loans is difficult to measure due to high heterogeneity using the chilean household finance survey i simulate the default conditions of heterogeneous households over distinct macro scenarios i show that consumer loans have a high covariance beta relative to the stock market and bank assets banks loan portfolios have very different covariance betas with some banks being prone to high risk during recessions high income and older households have lower betas and help diversify banks portfolios households covariance risk increases the probability of being rejected for credit and has a negative impact on loan amounts

expectations heterogeneous forecast errors and consumption micro evidence from the michigan consumer sentiment surveys the household data underlying the michigan index of consumer sentiment are used to test the rationality of consumer expectations and their usefulness in forecasting expenditure the results can be interpreted as characterizing the shocks that hit different types of households over time expectations are found to be biased and inefficient at least ex post people underestimated the disinflation of the early 1980s and the severity of recent business cycles people s forecast errors are also systematically correlated with their demographic characteristics in part because of time varying group level shocks further sentiment helps forecast consumption growth some of this rejection of the permanent income hypothesis is due to the systematic demographic components in forecast errors

the reaction of consumer spending and debt to tax rebates evidence from consumer credit data we use a new panel data set of credit card accounts to analyze how consumers responded to the 2001 federal income tax rebates we estimate the monthly response of credit card payments spending and debt exploiting the unique randomized timing of the rebate disbursement we find that on average consumers initially saved some of the rebate by increasing their credit card payments and thereby paying down debt but soon afterward their spending increased counter to the permanent income model spending rose most for consumers who were initially most likely to be liquidity constrained whereas debt declined most so saving rose most for unconstrained consumers

benefits of relationship banking evidence from consumer credit markets abstract using a unique panel dataset that contains comprehensive information about the relationships between a large bank and its credit card customers we show that relationship accounts exhibit lower probabilities of default and attrition and have higher utilization rates than non relationship accounts dynamic information about changes in the behavior of a customer s other accounts at the same bank helps predict the behavior of the credit card account over time these results imply that relationship banking offers significant potential benefits to banks information the lender has at its disposal can be used to mitigate credit risk on the credit card account

the law of one price in scandinavian duty free stores many empirical studies have rejected the law of one price that prices of a good differ across locations has been explained by differences in product attributes and costs of local inputs transport costs trade barriers and that buyers have imperfect information about prices in different locations see penelopi k goldberg and michael m knetter 1997 for a survey we examine the law of one price in situations where none of the mentioned reasons for its failure can be invoked it has also been suggested that deviations from the law of one price are a consequence of rigid nominal prices and that different countries typically have different currencies we explore whether this can contribute to our understanding of deviations from the law of one price our data are taken from three scandinavian duty free outlets where each product at the same location has price tags in at least two currencies hence a consumer has the option to choose between several prices for the same identical good in such a setting there is a strong prior that the law of one price lop hereafter holds well however the potential for arbitrage will arise because nominal prices are not continuously adjusted while exchange rates fluctuate daily based on standard tests we reject lop at all duty free outlets given that lop does not hold here it is less surprising that many previous studies have found that prices of similar products at different locations differ significantly nevertheless the main conclusion of the paper is that in this natural experiment lop remains a useful guide to the behavior of relative prices as deviations become large nominal prices are adjusted to reduce the deviations from lop thereby limiting arbitrage opportunities the patterns at the duty free outlets suggest that there is a band of inaction so that small deviations from lop may persist for almost a decade in one case but that large deviations quickly lead firms to adjust relative prices the findings are consistent with costly arbitrage and fixed costs of adjusting nominal prices

what happens when information leaves a market evidence from postbankruptcy consumers federal law mandates the removal of personal bankruptcies from credit reports after 10 years the removal s effect is market efficiency in reverse the short term effect is a spurious boost in apparent creditworthiness especially for the more creditworthy bankrupts delivering a substantial increase in both credit scores and the number and aggregate limit of bank cards the longer term effect is lower scores and higher delinquency than initial full information scores predict these findings relate to both the debate over the bankruptcy code and the wisdom of influencing market clearing by removing information

an empirical analysis of personal bankruptcy and delinquency this article uses a new dataset of credit card accounts to analyze credit card delinquency personal bankruptcy and the stability of credit risk models we estimate duration models for default and assess the relative importance of different variables in predicting default we investigate how the propensity to default has changed over time disentangling the two leading explanations for the recent increase in default rates a deterioration in the risk composition of borrowers versus an increase in borrowers willingness to default due to declines in default costs even after controlling for risk composition and economic fundamentals the propensity to default significantly increased between 1995 and 1997 standard default models missed an important time varying default factor consistent with a decline in default costs debt issued by consumers is an understudied asset class there has been particularly little academic study of recent trends in default on this debt between 1994 and 1997 the number of personal bankruptcy filings in the united states rose by about 75 the 1 35 million filings in 1997 represented well over 1 of u s households delinquency rates on credit cards rose almost as sharply federal reserve bank of cleveland 1998 the resulting losses to lenders amounted to a sizable fraction of the interest payments they collect potentially raising the average cost of credit these trends in default both in bankruptcy and delinquency are especially surprising in light of the strong economy over the period they provide an unusually rich source of variation to test the stability of models that forecast personal default and of credit risk models more generally there are two leading explanations for these trends first the risk composition of borrowers might have worsened under the risk effect less

price convergence in the emu evidence from micro data abstract the establishment of the european monetary union emu was widely expected to cause price convergence among member states in an investigation of this claim the present study avoids problems of comparability and representativeness by using an extremely detailed and comprehensive scanner database on washing machine prices and sales volumes for 17 european countries a hedonic regression yields country specific time series for quality adjusted price differentials statistically and economically significant deviations from the law of one price emerge log t tests firmly reject price convergence among emu countries small convergence clusters can be identified but they are unrelated to emu membership

residential energy use abstract the energy information administration recently published data they collected from the national interim energy consumption survey niecs niecs includes detailed information on 4081 individual households demographic characteristics energy related features of the structure heating equipment and appliances therein recent conservation actions taken by the household and fuel consumption and costs for the april 1978 march 1979 one year period this data set provides a new and valuable resource for analysis we summarized and analysed the niecs data on household energy consumption total energy use electricity use and use of the primary space heating fuel the regression equations constructed explain roughly half the variation in energy use among households these equations contain 10 or fewer independent variables the most important of which are fuel price year house was built floor area and heating degree days

sticky prices new evidence from retail catalogs this paper presents new results on the size frequency and synchronization of price changes for twelve selected retail goods over the past 35 years three basic facts about the data are uncovered first nominal prices are typically fixed for more than one year although the time between changes is very irregular second prices change more often during periods of high overall inflation third when prices do change the sizes of the changes are widely dispersed both large and small changes occur for the same item and the sizes of these changes do not closely depend on overall inflation

european product market integration after the euro using a detailed data set of prices of consumer goods in european cities from 1990 to spring 2003 we investigate the question of whether the introduction of the euro in january 1999 increased integration of consumer markets as reflected by consumer prices in fact we find no tendency for prices to converge after january 1999 this finding holds even when we control for a number of factors that might affect price dispersion on the other hand we find that there has been a significant reduction in price dispersion throughout the decade of the 1990s suggesting that efforts to reduce economic barriers initiated early in the decade may have in fact had the effect of significantly increasing the integration of consumer markets charles engel and john h rogers

the evolution of price dispersion in the european car market car prices in europe are characterized by large and persistent differences across countries the purpose of this paper is to document and explain this price dispersion using a panel data set extending from 1980 to 1993 we first demonstrate two main facts concerning car prices in europe i the existence of significant differences in quality adjusted prices across countries with italy and the u k systematically representing the most expensive markets 2 substantial year to year volatility that is to a large extent accounted for by exchange rate fluctuations and the incomplete response of local currency prices to these fluctuations these facts are analysed within the framework of a multiproduct oligopoly model with product differentiation the model identifies three potential sources for the international price differences price elasticities generating differences in markups costs and import quota constraints local currency price stability can be attributed either to the presence of a local component in marginal costs or to markup adjustment that is correlated with exchange rate volatility the latter requires that the perceived elasticity of demand is increasing in price we find that the primary reason for the higher prices in italy is the existence of a strong bias for domestic brancs that generates high markups for the domestic firm fiat in the u k higher prices are mainly attributed to better equipped cars and or differences in the dealer discount practices the import quota constraints are found to have a significant impact on japanese car prices in italy france and the u k with respect to local currency price stability a large percentage of the documented price inertia can be attributed to local costs and a smaller fraction to markup adjustment that is indicative of price discrimination based on these results we conjecture that the emu will substantially reduce the year to year volatility observed in the car price data but without further measures to increase european integration it will not completely eliminate existing cross country price differences

common currency common market does the common currency promote goods market integration within the emu we argue that such an effect is likely but that the mechanism typically proposed lower costs of arbitrage because of increased price transparency is likely to be of minor importance instead we sketch a duopoly model which stresses that lower possibility of future real exchange rate variability lowers the option value of being able to price discriminate the euro would promote market integration because it is less valuable for firms to segment markets in addition we argue that fairness concerns and less risk associated with third party arbitrage

default risk and private student loans implications for higher education policies abstract in recent years the proportion of students facing a binding constraint on government student loans has grown this has led to substantially increased use of private loans as a supplementary source of finance for households higher education investment a critical aspect of the private market for student loans is that loan terms must reflect students risk of default college investment will therefore differ from a world in which government student loans whose terms are not sensitive to credit risk are expanded to no longer bind moreover beyond simply crowding out private lending expansions of the government student loan program will feed back into default risk on private loans the goal of this paper is to provide a quantitative assessment of the likely effects of the private market for student loans on college enrollment we build a model of college investment that reflects uninsured idiosyncratic risk and a well defined life cycle that is consistent with observed borrowing and default behavior across family income and college preparedness we find that higher government borrowing limits increase college investment but lead to more default in the private market for student loans while tuition subsides increase college investment and reduce default rates in the private market consequently higher limits on government student loans have small negative welfare effects while tuition subsidies increase aggregate welfare

do liquidity constraints and interest rates matter for consumer behavior evidence from credit card data this paper utilizes a unique new dataset of credit card accounts to analyze how people respond to changes in credit supply the data consist of a panel of thousands of individual credit card accounts from several different card issuers with associated credit bureau data we estimate both marginal propensities to consume mpcs out of liquidity and interest rate elasticities we also evaluate the ability of different models of consumption to rationalize our results distinguishing the permanent income hypothesis pih liquidity constraints precautionary saving and behavioral models we find that increases in credit limits generate an immediate and significant rise in debt counter to the pih the average mpc out of liquidity ddebt dlimit ranges between 10 14 the mpc is much larger for people starting near their limits consistent with binding liquidity constraints however the mpc is significant even for people starting well below their limit we show this response is consistent with buffer stock models of precautionary saving nonetheless there are other results that conventional models cannot easily explain e g why so many people are borrowing on their credit cards and simultaneously holding low yielding assets unlike most other studies we also find strong effects from changes in account specific interest rates the long run elasticity of debt to the interest rate is approximately 1 3 less than half of this elasticity represents balance shifting across cards with most reflecting net changes in total borrowing the elasticity is larger for decreases in interest rates than for increases which can explain the widespread use of temporary promotional rates the elasticity is smaller for people starting near their credit limits again consistent with liquidity constraints

staggering and synchronization in price setting evidence from multiproduct firms theoretical work on price setting behavior focuses on the single product case while in reality a single price setter sells many products the authors use retail store level multiproduct pricing data to learn about price dynamics they find that while the timing of a product s price changes is staggered across stores selling the same product the timing of the price changes of different products sold within the same store is highly synchronized this finding validates the usual assumption that decisions are staggered across price setters and suggests that price rigidity is due mostly to mechanical reasons and not to informational asymmetries copyright 1996 by american economic association

cross country price dispersion in the euro era a case study of the european car market impact of the euro this paper investigates the effects of the european monetary union on cross country price differences in the european car market the analysis utilizes disaggregate bi annual data on the prices of almost all car models sold in the 15 countries of the european union over 1993 2003 the data refer to identical models with identical specifications and options to identify the euro s effect we exploit the fact that out of the 15 countries in our sample 12 joined euroland at the beginning of 1999 and officially adopted the euro as their national currency at the beginning of 2002 while 3 countries remained outside the monetary union we investigate whether there is a systematic difference in the evolution of cross country price dispersion between euroland members and non members after 1999 our analysis distinguishes between phase i monetary union with national currencies preserved 1999 2001 and phase ii official adoption of the euro as a national currency in 2002 we examine the evolution of both the absolute price differentials across countries and the speed with which deviations from the long term cross country differentials are eliminated we find that in the pre euro era countries that later joined euroland exhibited lower price differentials relative to the base country of the netherlands by approximately 6 the monetary union further reduced these differentials by a small but significant percentage about 1 5 between 1999 and 2001 this reduction happened while the price differentials in non euroland countries increased the price differentials in euroland countries further decreased following the official euro adoption in 2002 however we cannot attribute this decline to the euro as we witness an even faster decrease of price differentials in non euroland countries over the 2002 2003 period despite these reductions cross country price differences remain large even among members regarding the speed of convergence we find that even before 1999 the half life of price shocks was shorter in euroland countries compared to non euroland countries 0 65 versus 1 year however we do not find any evidence that the emu further affected the speed of convergence in a significant manner overall our results suggest a big role for exchange rate stability in reducing international price dispersion and a smaller role for a common currency the surprisingly high remaining international price differentials after the euro suggest the need for additional measures towards integration e g liberalization of the distribution system reduction of high registration taxes in particular countries pinelopi koujianou goldberg and frank verboven

electricity policies for low income households this paper discusses the implications of restructuring the u s electricity industry for low income energy policy and low income households the paper discusses the historical development of existing low income energy policies and programs federal policy has focused primarily on addressing the heating needs of low income customers state policy has traditionally vested the vertically integrated utility with much of the responsibility to provide energy programs to low income customers the paper considers how industry restructuring may affect the appropriateness of these policies and programs the paper describes new policies to provide low income electricity services that could be developed in parallel with broader industry restructuring efforts

goods prices and exchange rates what have we learned import prices typically change by a smaller proportion than the exchange rate between the exporting and importing country recent research indicates that common currency relative prices for similar goods exported to different markets are highly correlated with exchange rates between those markets this evidence suggests that incomplete pass through is a consequence of third degree price discrimination while distance matters for market segmentation borders have independent effects the source of the border effect has not been clearly identified furthermore there is little evidence yet to suggest substantial market power is implied by the observed price discrimination

price setting in online markets basic facts international comparisons and cross border integration we document basic facts about prices in online markets in the united states and canada which is a rapidly growing segment of the retail sector relative to prices in regular stores prices in online markets are more flexible and exhibit stronger pass through 60 75 percent and faster convergence half life less than two months in response to movements of the nominal exchange rate multiple margins of adjustment are active in the process of responding to nominal exchange rate shocks properties of goods sellers and markets are systematically related to pass through and the speed of price adjustment for international price differentials

credit card redlining abstract this paper evaluates the presence of racial disparities in the issuance of consumer credit using a database of credit histories i link location based information on race with individual credit files after controlling for place specific factors such as housing vacancy rates and general population demographics i find qualitatively large differences in the amount of credit offered to similarly qualified applicants living in black versus white areas high data quality allows distinguishing between issuer provision supply and utilization of credit demand additional estimates using information on payday lending provide support for idea that issuers condition lending on location

the law of one price in 1901 i introduction the law of one price states that absent search information costs a particular good is sold at the same price by all sellers in the same market as first pointed out by stigler 1961 however search costs can cause an equilibrium characterized by price dispersion it is no longer optimum for consumers to search until the lowest price is found as stigler observes price dispersion is a manifestation and indeed it is the measure of ignorance in the market p 214 various studies over the past four decades report evidence that price dispersion is ubiquitous and that its magnitude is affected by the costs and benefits of search for example relative dispersion the coefficient of variation is less for more expensive and frequently purchased goods where the benefits of search are greater some recent works have examined the issue in the context of internet markets e g automobiles books and cds testing the presumption that lower online search costs lead to lower price dispersion and also price levels perhaps surprisingly these studies find that dispersion in internet markets differs little from their conventional counterparts 1 the present study extends the record on price dispersion in local markets back more than a half century before the earliest modern studies circa 1960 2 this is possible because of a unique u s government survey conducted and published in 1901 the survey yields retail prices of four products at more than 1500 stores nationwide three of these are still sold today allowing comparisons based on modern survey data the intervening century saw the introduction of search cost reducing technology at least as dramatic as the internet in both transportation e g the automobile and communication e g telephone radio and television 3 also the general migration of people from the farm to cities during the early twentieth century produced a broadening of markets although not as dramatic as that created by the internet was price dispersion in 1901 more than that observed today the answer is that if anything dispersion was less in 1901 the article is organized as follows section i describes the data used in the present study section ii reports price dispersion for the four 1901 products section iii presents the modern data and makes comparisons section iv provides a summary and conclusions ii the 1901 survey in 1901 the u s industrial commission usic conducted an investigation of the local differences in prices of articles produced by certain industrial combinations usic 1901 773 the motivating concern was what is today called predatory pricing which was alleged to occur in local or regional geographic markets 4 the investigation consisted of a national survey to gather information on the prices of certain products the usic sent questionnaires to 5 000 retail dealers from whom 1 578 replies were received representing every state in the union at that time 773 74 six products were included illuminating oil kerosene granulated sugar three grades of salt and royal baking powder a specific brand the usic stated that these were chosen primarily because of the fairly uniform quality of the product which it was believed would make it possible to compare accurately the prices in different localities 773 individual dealer responses anonymous for four of these products excluding two salt grades were published in tabular form by state and city and constitute the data source for the present study 5 the issue at hand is price dispersion in a given local market the usic identifies dealers by their city of residence only and so that is the basis for market definition 6 to measure dispersion deviations from the mean there must be at least two dealers per city the first column of table 1 summarizes the number of cities markets with multiple dealers by product

accounting for u s real exchange rate changes this study measures the proportion of u s real exchange rate movements that can be accounted for by movements in the relative prices of nontraded goods the decomposition is done at all possible h