expectations the exchange rate and the current account abstract a critical examination is undertaken of the relationship between the exchange rate and the current account in a small open economy theoretically the correlation between the exchange rate and the current account seems to be ambiguous in particular the association between movements in the exchange rate and the current account is likely to depend in an essential manner on the nature of exogenous disturbances affecting the two variables simultaneously lastly the question of the role of an optimal monetary policy and the choice of an exchange rate regime in an uncertain environment is raised

the inflation tax in a real business cycle model money is incorporated into a real business cycle model using a cash in advance constraint the model economy is used to analyze whether the business cycle is different in high inflation and low inflation economies and to analyze the impact of variability in the growth rate of money in addition the welfare cost of the inflation tax is measured and the steady state properties of high and low inflation economies are compared

macroeconomic interdependence under capital controls abstract this paper studies the international transmission of monetary and fiscal disturbances under capital controls the results are contrasted with those that obtain under perfect capital mobility under perfect capital mobility permanent and unanticipated changes in domestic fiscal and monetary policies have no real effects abroad and the adjustment is instantaneous in contrast under capital controls these disturbances are transmitted abroad and adjustment occurs only over time the dynamic adjustment of the world economy is characterized by a negative co movement of domestic and foreign variables such as consumption the real interest rate and the real exchange rate

euler equations and money market interest rates a challenge for monetary policy models standard macroeconomic models equate the money market rate targeted by the central bank with the interest rate implied by a consumption euler equation we use u s data to calculate the interest rates implied by euler equations derived from a number of specifications of household preferences correlations between these euler equation rates and the federal funds rate are generally negative regression results and impulse response functions imply that the spreads between the euler equation rates and the federal funds rate are systematically linked to the stance of monetary policy our findings pose a fundamental challenge for models that equate the two

pharmaceutical cost sharing systems and savings for healthcare systems from parallel trade this paper studies the consequences of parallel trade in a two country model it compares a coinsurance scheme consumers pay a percentage of the drug price and an indemnity insurance scheme reimbursement is independent of the drug price with respect to changes in copayments and public health expenditure in the destination country copayments for patients decrease to a larger extent under indemnity insurance whereas reductions in public health expenditure occur only under coinsurance in the source country copayments increase less under coinsurance whereas health expenditure is reduced more under indemnity insurance in both countries total expenditure under parallel trade is lower

optimal monetary policy in a cash in advance economy i introduction this paper addresses the issue of optimal monetary policy within a particular general equilibrium model of the monetary transmission mechanism the model analyzed is a member of the recent class of liquidity models of the monetary business cycle 1 these liquidity models are something of a growth industry partly because they are potentially consistent with a monetary equilibrium in which monetary injections drive down nominal rates of interest and stimulate real activity stylized facts supported by evidence presented in for example christiano and eichenbaum 1992 an unexplored question is the role of monetary policy in these models this paper makes an attempt at remedying this deficiency by analyzing optimal monetary policy in a model with liquidity effects as in the liquidity models mentioned above the model analyzed here is constructed by imposing two trading frictions on an otherwise frictionless arrow debreu environment 2 the first is a requirement that all transactions be carried out in a decentralized fashion with the use of cash this friction is the well known cash in advance constraint first suggested by clower 1967 but now quite commonplace in models of monetary equilibrium as in lucas and stokey 1987 and cooley and hansen 1989 i impose this constraint because it is a tractable way of introducing a transactions demand for cash the qualitative results would be unaffected if a more general transactions technology was employed the second friction is unique to the liquidity models i assume that private agents cannot quickly move cash across markets this assumption of sluggish cash flow presumably motivated by transactions costs that are not explicitly modeled implies that cash may not be equally valued across markets with its value in a particular market determined by the amount of cash or liquidity contained in the market this friction introduces the so called liquidity effects on asset prices and real activity the paper proceeds as follows the next section develops the basic model and discusses the effects created by the assumed trading frictions section iii explores optimal monetary policy the nature of the trading frictions introduces a role for activist monetary policy in particular to the extent that the central bank can adjust liquidity more rapidly than the private sector there is a welfare improving role for monetary policy in some cases interest rate smoothing is a good idea while in others optimal policy will increase interest rate variability section iv links the results to the optimum quantity of money literature and offers up a few conclusions ii a model of monetary non neutrality the economy is populated with three types of agents households firms and financial intermediaries there are numerous identical agents of each type so that all behave as atomistic competitors given this assumption i will confine my discussion to a representative agent of each type the representative household is made up of two members a shopper and a worker the shopper s role is to use the household s assets to acquire consumption goods during each period while the worker supplies some portion of the household s time endowment equal to 1 each period to firms in exchange for payment the household s preferences over uncertain consumption and leisure streams are given by e summation of beta sup t u c sub t v 1 l sub t where t 0 to infinity where beta is an element of 0 1 c sub t and l sub t are time t consumption and work effort respectively v is increasing and concave and mathematical expression omitted the expectation is over realizations of the economy wide shocks the expression s sub t is an element of s subset r denotes the state of the world at time t where s is a compact set these states are i i d across time with a distribution function given by

dual exchange rates in europe and latin america this article uncovers some important empirical regularities surrounding the operation of formal dual exchange rates in europe and latin america in the 1970s and 1980s although there are some parallels between the european and latin american experiences there are also interesting differences in terms of the size and nature of the distortion created by two official exchange rates the response of the distortion to foreign interest rates real commercial exchange rates and domestic budget deficits and the motives for adopting this exchange rate regime empirical work on dual exchange rate regimes is made difficult by the transitory nature of these regimes and by frequent changes in institutional practices

wage stickiness and the non neutrality of money a cross industry analysis abstract the paper provides an empirical test of sticky wage models of business fluctuations by focusing on industry level cross sectional implications that emerge this breaks the observational equivalence existing at the aggregate level between rational expectations long term contracting and imperfect information models the specific implication tested is whether output responses to nominal disturbances industry phillips curve slopes are inversely related to wage indexation elasticities the phillips curve slopes are found to vary across industries for the canadian economy but bear no relationship to indexation elasticities casting doubt on the role of nominal wage rigidity in generating the observed non neutrality of money

labour markets liquidity and monetary policy regimes dans leur etude les auteurs elaborent un modele d equilibre du mecanisme de transmission de la politique monetaire qui fait ressortir les elements de friction relatifs a l acquisition d information sur le marche de la monnaie et a la recherche d emploi

parallel imports and the pricing of pharmaceutical products evidence from the european union we consider policy issues regarding parallel imports pis of brand name pharmaceuticals in the european union where such trade is permitted we develop a simple model in which an original manufacturer competes in its home market with pi firms the model suggests that for small trade costs the original manufacturer will accommodate the import decisions of parallel traders and that the price in the home market falls as the volume of parallel imports rises using data from sweden we find that the prices of drugs subject to competition from parallel imports fell relative to other drugs over the period 1994 1999 econometric analysis finds that parallel imports significantly reduced manufacturing prices by 12 19 there is evidence that this effect increases with multiple pi entrants

capital controls the case of argentina abstract in this paper the effects of capital controls on the observed nominal interest rate differential adjusted for exchange rate changes between argentina and the united states are examined a simple model of portfolio behavior is used which is based on dooley and isard s 1980 work the model separates the component of the observed nominal interest rate differential adjusted for exchange rate changes between the argentinian rate and the dollar rate which was due to political and exchange risk premia associated with prospective controls from the component of the differential due to the existing controls the empirical analysis shows that both the existing and prospective contrls combined explain about 83 per cent of the nominal interest rate differential

an exploration in the theory of exchange rate regimes three exchange rate regimes a float a one sided peg and a cooperative peg are evaluated and compared in terms of efficiency and welfare levels the framework of analysis embodies country specific monies with the money of each country being used to transact in its commodity markets and its currency denominated bonds welfare levels depend only on consumption levels in the presence of perfect foresight all equilibrium allocations are pareto efficient in a floating exchange rate regime the perfect foresight equilibrium allocation coincides with an equilibrium of a costless barter economy the same result holds in a one sided peg if the pegging country s exchange rate stabilizing authority breaks even over time in a cooperative peg regime there is a different equilibrium allocation for each combination of exchange rate levels and monetary policies problems of policy coordination and conflicts in desired monetary policies are discussed

a simple model of pharmaceutical price dynamics abstract branded pharmaceutical firms use price and promotional strategy to manage public knowledge about their drugs we propose a dynamic theory of pharmaceutical pricing and conduct an exploratory empirical analysis inspired by the theory our theory predicts a pattern of increasing prices and decreasing promotional activities over a drug s life cycle prices are kept low and advertising levels high early in the life cycle in order to build public knowledge about the drug as knowledge grows prices rise and advertising falls if the management of this stock is important enough this tendency of prices to rise can overwhelm the price decreasing effect of entry by generic competitors late in the drug life cycle we argue that our theory of price dynamics explains empirical regularities in this industry

optimal price and advertising policy for a convenience goods retailer convenience goods are bought without much consideration or effort on the part of the consumer buyers don t try to get the best bargain when purchasing individual convenience items instead they adapt their store choice habits so that they can expect on average good value for money in the long run store choice is governed by aggregate information which is received on the price levels of stores this is embodied in store price images a store price image is defined in the subsequent paper as a perceived difference between the store s price level and a reference level that consumers expect of stores about which they have no particular information store price images are learnt adaptively over time we propose a theoretical model of store price image adaptation and a two stage sales response model according to the latter a store s price image and advertising determine the number of customers attracted per period sales per visit however depend only on the prices actually observed in the store for this sales model we have studied the optimal price and advertising policy making simple assumptions of cost our main interest is the interaction between optimal advertising and price image it turns out that image improvement is achieved mainly through pricing increased advertising follows only after the price image has been improved therefore as long as the price image is poor relative to some optimal equilibrium level a larger portion of the marketing budget should be allocated to lower prices rather than to advertising in phases where the price image declines towards the equilibrium however heavier advertising is profitable

capital controls and the real exchange rate capital import taxes lower raise world home interest rates this shifts home expenditure from the present to the future and foreign expenditure from the future to today with identical home and foreign expenditure patterns the change in the composition of world expenditure has no effects on demand for any commodity then capital controls have no effect on the real exchange rate when consumers prefer home goods capital controls cause lower demand today for home goods in this way capital controls lower the real exchange rate today this result is mitigated when the country imposing capital controls is a large debtor

the distribution of money balances and the nonneutrality of money recent monetary models with explicit microfoundations are made tractable by assuming that agents have access to centralized markets after one round of decentralized trade given quasi linear preferences this makes the distribution of money degenerate which keeps the models simple but precludes the discussion of distributional effects of monetary policy we generalize these models by assuming two rounds of trade before agents can readjust their money holdings to study a range of new distributional effects analytically we show that unexpected symmetric lump sum money injections may increase short run output and welfare whereas asymmetric injections may increase long run output and welfare

developments in implementable retailing research abstract a favorable image and a convenient location are essential to attract customers into a store possibly with the benefit of retailer advertising once inside the customer s buying decision will be greatly influenced by the products on display their prices and other promotions the ultimate profitability for the retailer will also depend on the efficiency of the operations advances in these areas are reviewed through twenty four publications in the last five years with references back to six earlier papers

an investigation in the theory of foreign exchange controls a choice theoretic cash in advance model is constructed to examine foreign exchange controls while foreign exchange controls improve the trade balance and the balance of payments or exchange rate they reduce welfare for a distortion free small open economy this is because foreign exchange controls essentially place a quota on imports shocks to the terms of trade are shown to be transmitted negatively to the domestic economy when exchange controls are in effect devaluations are found not to have real effects finally it is argued that foreign exchange controls are not the optimal policy for attaining trade balance objectives

real exchange rates under alternative nominal exchange rate systems abstract the paper develops an equilibrium model of the determination of exchange rates the relative price of nontraded goods and the current account the focus is on the effects of various real and nominal disturbances and the conditions under which the nominal exchange rate system is neutral with respect to real variables in the economy the model demonstrates an assymetry in the roles of trade and nontraded goods in affecting exchange rates an econometric investigation of the raltion between the exchange rate system and the variability of real exchange rates provides some evidence against the neutrality hypothesis

sh a r p shelf allocation for retailers profit shelf space is the retailer s scarcest resource space management tools are thus badly needed for that purpose commercial computer packages and optimal allocation models have been developed building on the work of corstjens and doyle we elaborate a general theoretical shelf space allocation model which focuses on the demand interdependencies prevailing across and within product groups rules of thumb are compared to the derived optimal allocation the sh a r p model is introduced as a simplified yet realistic variant and validated against data collected in a dutch supermarket chain subsequently the feasibility of its implementation has been experimented in various belgian chains case studies demonstrate the profit potential of sh a r p

competition in off patent drug markets issues regulation and evidence in recent years health insurers have placed a great deal of emphasis on the ability of generic medicines to deliver significant savings to overstretched health care budgets due to their lower cost and potential for a more efficient resource allocation in this paper we study market developments after patent expiry whether health insurance captures the financial benefits from cheaper generics and whether regulation and product differentiation among others have any power in explaining originator and generic price movements generic entry and diffusion we find that health insurance does not capitalize fully or fast enough on the cost advantage of generic medicines either because generic policies do not encourage their fast uptake or because generic drug prices are high and frequently tied directly or indirectly to originator drug prices we also find that reference pricing a particular form of reimbursement regulation encourages generic entry and reduces generic prices but only marginally finally in generic markets characterized by homogeneous products we find evidence of product differentiation which is impacting prices upwards rather than downwards if health insurance is to benefit fully from generic medicines it ought to encourage faster uptake and price competition and discourage price fixing regulation that ties generic prices to those of originator brands panos kanavos joan costa font and elizabeth seeley

exchange rate management viewed as tax policies abstract the paper develops an analytical framework which demonstrates that along the lines of the celebrated lerner symmetry theorem the various forms of exchange rate management are equivalent to corresponding tax policies to highlight the salient issues we consider two specific categories of exchange rate policies the first is a dual exchange rate regime which separates exchange rates for commercial and for financial transactions and the second is a unified exchange rate system in which the country unilaterally pegs its exchange rate at the same rate for all transactions we show that the dual exchange rate policies can be usefully cast as distortionary taxes on international borrowing and unified pegged exchange rate policies can be usefully cast as lump sum tax cum subsidy policies the equivalence between the various characteristics of exchange rate management and tax management suggests that exchange rate analysis could be usefully incorporated into the broader framework of the analysis of fiscal policies a two country model of the world economy is used to demonstrate the international transmission mechanism of these policies

real vs financial investment can tobin taxes eliminate the irreversibility distortion abstract in the recent past several developing countries have failed to achieve significant real capital investment despite episodes of large capital inflows although there are real projects with seemingly high returns investors prefer to wait for the correct time to invest in this paper we address this issue by considering a two sector economy where investment in real capital is irreversible and debt financed furthermore the interest rate which is determined in the financial sector is random as a result of volatile expectations in this economy the expected return on real capital is above the expected interest rate this is because the option to wait for lower interest rates has a positive value in the presence of rumors taxes on international financial transactions tobin taxes reduce the variance of the domestic interest rate while leaving its mean unchanged as a result they induce more investment in irreversible real capital the model borrows from the irreversible investment literature a difference with other models is that the source of noise is a mean reverting process not just a geometric brownian motion we solve for the optimal decision rule using the girsanov theorem of the maxims of orthodox finance none surely is more anti social than the fetish of liquidity it forgets that there is no such thing as liquidity of investment for the society as a whole the introduction of a substantial government transfer tax on all transactions might prove the most serviceable reform available with a view to mitigating the predominance of speculation over enterprise keynes the general theory

consumer price sensitivity in the retail industry latitude of acceptance with heterogeneous demand abstract estimating the effect of price changes on demand is an essential task for retailers this study proposes a methodology based on consumer utility for modeling the price thresholds phenomenon that allows for threshold asymmetry incorporates consumer heterogeneity and uses weekly aggregated brand level data unlike other studies based on consumer utility models which generate results only for the price elasticity of market share a methodology for estimating price elasticity of demand is also included data on fast moving goods detergents toilet paper soft drinks meats liquid juices and yogurts supplied by a major retail chain are used to demonstrate the existence of price thresholds and their effects on price elasticity in every case it was found that within the thresholds or latitude of acceptance consumers are relatively less sensitive to price variations while beyond them a higher sensitivity was observed in some cases a product brand was classified as inelastic within the latitude of acceptance and elastic outside of it

dual exchange rate systems and capital controls an investigation abstract the welfare aspects of dual exchange rate systems are analyzed in this paper the requirement that domestic financial transactions with the rest of the world be undertaken at a special foreign exchange rate is found to be equivalent to levying a tariff on this class of international transactions hence a dual exchange rate system and capital controls are shown to be essentially identical in light of the above statements the dual exchange rate system should be regarded as a form of commercial policy and be evaluated in this context by applying the applicable standard real trade theorems

the terms of trade and the current account the harberger laursen metzler effect the paper examines the effect of terms of trade changes on a small country s spending and current account assuming optimizing behavior in an intertemporal framework with perfect international capital mobility a temporary future terms of trade deterioration implies a deterioration improvement of the trade balance whereas a permanent terms of trade deterioration has an ambiguous effect depending on the rate of time preference nominal and real variables are considered via exact price indexes two periods and an infinite horizon are examined

a forecasting model to evaluate the profitability of price promotions abstract experience over the years has led grocery store managers to spend almost all of their promotion money on adds in newspapers the adds are generally advertised price reductions for specific products these adds are usually cooperative adds in which the manufacturer whose product is featured in the display ad pay part of the cost of the ad the rest of the cost is paid by the grocer the grocer has a problem in evaluating the profitability of the price promotion different classes of consumers respond differently to the price promotions to measure the impact of the price promotion becomes very difficult in this paper the authors examine the different ways consumers respond to price promotions and how the different responses affect profits using this data the authors develop a model that can forecast the profitability of specific price promotions this model is then tested for three products at a very large grocery store chain in finland

time varying risk interest rates and exchange rates in general equilibrium under mild assumptions the data indicate that time varying risk is the primary force driving nominal interest rate differentials on currency denominated bonds this finding is an immediate implication of the fact that exchange rates are roughly random walks a general equilibrium monetary model with an endogenous source of risk variation a variable degree of asset market segmentation can produce key features of actual interest rates and exchange rates in this model the endogenous segmentation arises from a fixed cost for agents to exchange money for assets as inflation varies so does the benefit of asset market participation and that changes the fraction of agents participating these effects lead the risk premium to vary systematically with the level of inflation this model produces variation in the risk premium even though the fundamental shocks have constant conditional variances

the cross industry effects of unanticipated money in an equilibrium business cycle model abstract this paper examines the differential real effects of monetary policy across industries the purpose is to test whether these differential effects can be accounted for by an incomplete information rational expectations model of the business cycle in the lucas barro tradition such a model implies a positive relation across markets between the variability of market specific shocks and the reduced form output effect of a monetary shock this proposition is tested using industry level post war u s data and support is found the exploration also uncovers other interesting industry level and aggregate results

money and exchange rates in the grossman weiss rotemberg model abstract we analyze the impact of monetary policy on inflation interest rates and exchange rates in a model with segmented asset markets developed by grossman and weiss 1983 and rotemberg 1984 1985 we find parameters for which real and nominal exchange rates in this model are 1 much more volatile than interest rates inflation rates and money growth rates 2 highly correlated with each other and 3 highly persistent while this model fails to match the data in other important respects it illustrates a potentially useful approach to modelling exchange rate behavior

forward discount puzzle and liquidity effects some evidence from exchange rates among the united states canada and japan this paper empirically examines whether the interaction between foreign exchange markets and monetary markets can help to resolve the forward discount puzzle following the monetary models of lucas 1990 and fuerst 1992 we define as liquidity effects the negative impact of monetary injection on nominal interest rates temporary deviations from the standard euler equation the liquidity effect identified by these models weakens the linkage between current forward rates and expected future spot rates and improves on the standard rational expectations model that predicts a one to one correspondence between the two using time series of exchange rates among the united states canada and japan this paper shows that the liquidity measure identified above has an impact on forward premiums and that once the liquidity effect is taken into consideration the unbiased prediction of the forward discount rate is recovered to some extent in a theoretically consistent manner

liquidity exchange rates and business cycles abstract this paper presents a two country two good two currency model to study the role of liquidity effects in exchange rate determination and the international transmission of economic fluctuations the model provides an exchange rate equation which is different from the simple purchasing powerparity law of exchange rate determination both monetary injections and real disturbances can lead to exchange rate fluctuations and comovements of interest rates prices and output of the two economies whether the covariances of variables in the two countries are positive negative or zero depends critically upon the substitutability of the two consumption goods in consumers preferences

inflation and productive activity in a multiple matching model of money abstract this paper investigates the relationship between money growth inflation and productive activity in a dynamic general equilibrium multiple matching framework where trade frictions are manifested by limited consumption variety productive activity and matching in the goods market are endogenized by a time allocation decision of work and search effort we find that a high degree of complementarity between participation in the labor and goods markets creates a channel by which inflation can positively influence production and output this feature arises when household preferences for consumption variety is sufficiently large and it can also lead to the multiplicity of monetary equilibria

note consumer store choice and choice set definition consumer store choice results from a process whereby information on various alternatives is evaluated by the consumer prior to the selection of one of these alternatives in the application of store choice models it is often assumed that the information processing strategy underlying store choice is a simultaneous one in which all possible alternatives are evaluated by an individual a competing assumption increasingly recognized in aspatial choice is that individuals initially evaluate clusters of alternatives and then only evaluate alternatives within a chosen cluster the nested logit model is a well known formulation for capturing this type of choice process this paper adds to the above understanding of consumer spatial choice in the following ways i it describes an alternative to the nested logit model known as a competing destinations model which can be used to model hierarchical spatial choice processes while this model has been described previously in the geography and planning literature this paper contains a novel derivation of it from within the random utility maximization framework ii a general choice formulation is derived from which the logit nested logit and competing destinations models can be obtained this allows the behavioral assumptions embedded in each model to be seen clearly and it allows a comparison of the nested logit and competing destinations formulations the latter is shown to be preferable in most spatial choice situations in particular the latter can be used when restricted choice sets are fuzzy iii the errors that arise when spatial choice results from a hierarchical process and when a simultaneous choice structure is assumed are demonstrated and are related to the presence of consumer competition agglomeration effects between stores which are thought to be important in store choice

on the effectiveness of capital controls the experience of colombia during the 1990s abstract this paper analyzes the effectiveness of capital controls in colombia the evidence presented points towards a relative inability of the measures adopted to reduce the level of capital inflows nonetheless the evidence suggests that non remunerated deposits have been successful in inducing a recomposition of foreign liabilities in favor of long term maturities it is likely that this is a positive result as it has made the country less vulnerable to a reversal in capital flows in this sense controls may be viewed as an effective way of internalizing the negative externality imposed by short term maturities

liquidity loanable funds and real activity abstract this paper develops a general equilibrium model of two traditional explanations of the monetary black box linking money and real activity the liquidity effect and the loanable funds effect these effects are modeled with a monetary production economy in which central bank injections of cash are funnelled into the economy through the credit market since only borrowers have direct access to the newly injected cash monetary injections cause nominal interest rates to fall if firms are borrowers then monetary injections also increase current and future real activity

search for a monetary propagation mechanism abstract this paper examines a monetary propagation mechanism in an economy where exchanges in goods and labor markets involve costly search it is shown that an increase in the money growth rate increases steady state employment and output when the money growth rate is low but reduces steady state employment and output when the money growth rate is already high the model produces persistent hump shaped responses in employment and output to money growth shocks even when the shocks have no persistence the model also generates desirable features in job vacancy sales inventory and the velocity of money all these features emerge here in an economy with perfectly flexible prices and wages journal of economic literatureclassification numbers e40 e30

business cycles in international historical perspective business cycle models seek to answer the question of why economies go through cycles of recession and recovery or boom and bust any theory of the business cycle makes two sorts of claims what shocks are most important in disturbing the economy and what economic structure is necessary for propagating these shocks for example one common explanation of business cycles begins with monetary shocks and then seeks to explain why monetary shocks are not purely neutral as neoclassical theory would have it and instead have real effects at least in the short term early models in this vein were often implicitly or explicitly based on the proposition that markets do not clear continuously early equilibrium real business cycle theories instead emphasized the importance of real shocks especially to technology which may cause socially efficient fluctuations even when markets are always in equilibrium more recent models have attempted to marry the equilibrium approach to macroeconomics with the substantive keynesian ideas that money is not neutral and that economic fluctuations are costly new keynesian theories of the business cycle admit the possibility of a number of economic shocks including monetary and technology shocks but then focus on explaining how nominal price rigidities within the economy can turn these shocks into recessions or booms other models show that business cycles driven by keynesian animal spirits are consistent with rigorous microfoundations and rational expectations seeking empirical evidence for and against these various approaches we turn business cycle theories loose on perhaps the greatest macroeconomic laboratory

the relationship between market characteristics and promotional price elasticities many empirical studies in marketing and economics have estimated brand price elasticities for specific products in markets their results indicate that price elasticities seem to differ across brands product categories retail outlets and regions however there has been very little research which examines the factors associated with these observed differences this paper focuses on the promotional price elasticities of established major brands in stable categories it identifies some characteristics of markets which may be associated with differences in price elasticities for frequently purchased nondurables a cross sectional model of the effect of these market characteristics on price elasticities is developed and estimated utilizing own price elasticity estimates for brands at twelve stores the results indicate market characteristics such as brand market share couponing activity display activity and feature activity explain a substantial amount of the variation in promotional price elasticities

the capitalization of income streams and the effects of open market policy under fixed exchange rates abstract this paper investigates the long and short run neutrality of open market monetary policy in a world of fixed exchange rates and imperfect substitutability between bonds denominated in different currencies using an illustrative portfolio balance model it shows that when the public discounts the future tax liabilities associated with the national debt and the central bank supports the exchange rate by trading non interest bearing foreign assets open market policy has a short run effect but no long run effect on the domestic price level and interest rate when the foreign exchange intervention assets earn interest that is rebated to and capitalized by the public open market policy loses even its short run efficacy the capital account offset to monetary policy is complete

a further exploration in the theory of exchange rate regimes in an interesting paper in this journal elhanan helpman 1981 develops a simple two country model to compare the welfare levels that are achieved under different exchange rate regimes in a world characterized by perfect foresight his basic finding is that equilibrium consumption allocations and hence welfare levels are identical under a floating exchange rate system and a one sided peg fixed exchange rate regime this result is due to helpman s assumption that output is determined exogenously which allows a separation of the real and monetary sides of the economy the purpose of this paper is to extend helpman s model by making two alterations in his setup 1 to allow production to be endogenously determined as a function of labor force participation and 2 to allow welfare levels to be dependent on labor service as well as on consumption the main conclusion then obtained is that a country may achieve a higher welfare level under a flexible exchange rate regime than under a fixed exchange rate regime since it is able to choose an optimal rate of inflation or currency depreciation

uniform commercial policy illegal trade and the real exchange rates a theoretical analysis countries on fixed exchange rates sometimes use uniform tariff cum subsidy utcs schemes as a way of achieving a real depreciation without disturbing the nominal exchange rate a potential drawback of this policy in relation to an across the board devaluation is that a utcs scheme provides incentives for illegal trade using an optimizing model with currency convertibility and illegal trade the author finds that welfare is lower under a utcs scheme than under a corresponding across the board devaluation and that in some cases the real exchange rate actually appreciates in response to an increase in the utcs rate

parallel trade and pharmaceutical prices a game theoretic approach and empirical evidence from the european union this paper studies whether parallel traded products spark price competition in pharmaceutical markets and whether they are any cheaper than locally sourced products we follow a game theoretic approach and employ descriptive statistics and econometric methods to study the effects of parallel trade on competition from a theoretic and empirical perspective the theoretic approach suggests that there is a unique nash equilibrium and the parallel trader sets prices at the same level as the locally sourced product while the price of the latter remains unaffected by parallel trade however there may be deviations from this equilibrium in the presence of particular policies or generic competition in which case the parallel traded product may be priced at lower levels than the locally sourced product empirical analysis confirms the predictions of the theory descriptive statistics show that there is no gap between locally sourced and parallel traded products unless generics or policies encouraging parallel trade are present results of the econometric analysis show that parallel trade does not trigger price competition and that the price of the locally sourced product remains unaffected by parallel trade therefore any savings for health insurance occurring as a result of parallel trade are limited

parallel imports demand dispersion and international price discrimination parallel imports goods imported by unauthorized resellers are advocated worldwide for undermining international price discrimination for a continuum of markets we find that uniform pricing by a monopolist yields lower global welfare than third degree discrimination if demand dispersion across markets is large though uniform pricing avoids output misallocation too many markets go unserved mixed systems permitting discrimination across but not within designated groups of markets yield significantly higher welfare than uniform pricing or unrestricted multimarket discrimination and can pareto dominate uniform pricing thus while parallel imports might benefit some countries our results weaken the multilateral case for allowing them

monetary policy in a financial crisis what are the economic effects of an interest rate cut when an economy is in the midst of a financial crisis under what conditions will a cut stimulate output and employment and raise welfare under what conditions will a cut have the opposite effects we answer these questions in a general class of open economy models where a financial crisis is modeled as a time when collateral constraints are suddenly binding we find that when there are frictions in adjusting the level of output in the traded good sector and in adjusting the rate at which that output can be used in other parts of the economy then a cut in the interest rate is most likely to result in a welfare reducing fall in output and employment when these frictions are absent a cut in the interest rate improves asset positions and promotes a welfare increasing economic expansion

money prices and the current account in a dual exchange rate regime abstract this paper examines the behavior of money prices and the current account in a dual exchange rate regime where all current account transactions take place at a pegged official rate and all capital account transactions occur at a freely floating financial rate the adjustment of a small open economy to a monetary disturbance under this regime is compared to that found under unified fixed and flexible rates the results concerning the behavior of the economy under dual rates are shown to apply also to an economy operating with fixed rates and controls on the international movement of capital

dual exchange rates capital controls and sticky prices abstract it is often argued that capital controls are an appropriate policy response to the exchange rate overshooting which occurs when asset markets adjust more rapidly than goods markets in this paper an intertemporal disequilibrium model of an open economy is developed in which the effect of capital controls is examined the results are contrasted with recent studies by adams and greenwood 1985 and obstfeld 1986 in which capital controls are evaluated within a purely equilibrium framework and thus inevitably take the form of a welfare reducing distortion

the transmission of disturbances under alternative exchange rate regimes with optimal indexing the paper develops a general stochastic macroeconomic model that can be used to study the international transmission of disturbances under four alternative exchange rate systems uniform flexible exchange rates uniform fixed exchange rates and two versions of two tier exchange rates the analysis makes two general points first one cannot assume stability of structure when assessing the consequences of alternative exchange rate regimes for example the slope of the aggregate supply curve and the rationally formed expectations in the asset markets can respond dramatically to the government s choice of exchange rate regime second exchange rate regimes that provide full insulation from foreign disturbances may nevertheless be inferior to other regimes in terms of their ability to maximize social welfare

armen alchian s contribution to macroeconomics i introduction this essay examines alchian s contribution to the theory and practice of macroeconomics we have the task of reviewing alchian s contributions in an area that represents only a tiny fraction of his body of work citations to his work on the theory of the firm greatly outnumber those on money and inflation nevertheless we find that many of the major developments in macroeconomics in the last two decades follow paths that were pointed out in the late 1950s and early 1960s by armen alchian much of it in collaboration with reuben kessel alchian s ideas about macroeconomics were developed in a fertile environment at ucla in conversations with colleagues such as karl brunner and jack hirshleifer as well as with graduate students such as allan meltzer and rachael and ted balbach a signature of alchian s work was his great ability to clarify the issues he was careful to distinguish the effects of money versus real shocks of anticipated versus unanticipated inflation and to work through the impact of an event to the general equilibrium consequences he understood that real world problems such as incomplete information might explain apparently noneconomic behavior but unlike many macroeconomists of that time he did not abandon microeconomic principles when explaining nominal real interactions alchian s views were a clear contrast to those of prominent macroeconomists of the day who argued that aggregate monetary policies could not be used to stabilize the price level at full employment because of asymmetric rigidities in markets that prevented the downward adjustment of any nominal price as part of the process of adjusting relative prices 1 the conventional wisdom of the day led to policies that ultimately caused two decades of accelerating and costly inflation both the rational expectations revolution and developments in modeling the microfoundations of business cycles were a reaction to this experience and to the apparent failure of standard macroeconomic analysis alchian s 1970 work on the effect of private information was one of the original articles in this microfoundation literature although he used a narrative approach rather than the highly structured mathematical models available to researchers today alchian was more than two decades ahead of the real business cycle economists in asking researchers to explore economic explanations fully before adopting explanations based on market failure money illusion and irrational behavior this paper is organized in four parts the first part describes alchian s work involving the fundamental role of money in society king and plosser 1986 93 wrote but in the explosion of formal modeling of monetary economies in the postwar period brunner and meltzer 1971 and alchian 1977 stand nearly alone in stressing the idea that monetary arrangements economize on the information production that would otherwise be necessary to mitigate problems of moral hazard in the exchange of commodities the second part discusses alchian and klein s work on the measurement of inflation this measurement problem appears to be more obvious when inflation is low and the variance of price indexes is dominated by real factors this work was generally neglected at the time it was written perhaps because inflation accelerated so rapidly that the real factors became less important now that inflation has declined to moderate levels the measurement problems are resurfacing the third part of the paper documents alchian s insight into the problems and intellectual developments that followed the erratic inflation policies of the u s government in the 1960s and 1970s in a 1962 journal of political economy article he and reuben kessel set forth a description of the events that occur as an economy shifts from one steady state inflation regime to another this work revealed an understanding of the importance of credibility for the policymaker that was missing from much of the writing about macro policymaking in the subsequent three decades

vertical distribution parallel trade and price divergence in integrated markets we develop a model of vertical pricing in which an original manufacturer sets wholesale prices in two markets that are integrated at the distributor level by parallel imports pi the manufacturing rm needs to set these two prices to balance three competing interests restricting competition in the pi recipient market avoiding resource wastes due to actual trade and reducing the double markup problem in the pi source nation

does regulation drive out competition in pharmaceutical markets abstract most countries regulate pharmaceutical prices either directly or indirectly on the assumption that competition is at best weak in this industry this paper tests the hypothesis that regulation of manufacturer prices and retail pharmacy margins undermines price competition we use data from seven countries for 1992 to examine price competition between generic competitors different manufacturers of the same compound and therapeutic substitutes similar compounds under different regulatory regimes we find that price competition between generic competitors is significant in unregulated or less regulated markets united states united kingdom canada and germany but that regulation undermines generic competition in strict regulatory systems france italy and japan regulation of retail pharmacy further constrains competition in france germany and italy regulation thus undermines the potential for significant savings on off patent drugs which account for a large and growing share of drug

anticipated inflation and the capital stock in a cash in advance economy abstract an economy is constructed in which the steady state capital stock is inversely related to the rate of inflation as a result that is directly opposite the usual conclusion

liquidity transaction costs and real activity this paper studies the liquidity effect in a pecuniary transaction cost model to model the asymmetric impact of monetary injections we consider two behavioral assumptions sluggish money demand and sluggish firm investment it is found that under reasonable parameterization the model is capable of generating a dominant liquidity effect our result suggests that with alternative monetary specifications and behavioral assumptions general equilibrium models are still useful for studying the liquidity effect at business cycle frequencies

the influence of product range in the space allocation procedure abstract considering product range as a part of the marketing mix is demonstrated as being of importance for a chain of medium sized supermarkets the concept of range elasticity is introduced and a space allocation procedure based on range elasticity models is provided the procedure considers the problem of group space allocation in addition to the more common problem of allocating a fixed amount of space to a product group

capital controls and fiscal policy in the world economy an intertemporal utility maximization framework is employed to model a world economy with capital controls the effects of fiscal policy in such an environment are examined several results emerge concerning the international transmission of fiscal policy under capital controls and the nature of comovements in macro economic aggregates such as output employment consumption and investment some of the paper s other results concern the implications of capital controls for ricardian equivalence the role of financing decisions in the international transmission process under capital controls and the effect of capital controls on the magnitude of fiscal induced fluctuations throughout the world economy contr6les des mouvements de capitaux et politique fiscale dans l conomie mondiale les auteurs utilisent une approche par la maximisation intertemporelle de l utilite pour modeliser une economie mondiale dans laquelle des controles sur les mouvements de capitaux existent ils examinent les effets de la politique fiscale dans un tel contexte on tire de ces analyses plusieurs resultats quant i la transmission internationale des effets de la politique fiscale et quant aux mouvements lies de certains agregats economiques comme les niveaux de production d emploi de consommation et d investissement certains autres resultats de cette analyse ont trait aux implications des controles des mouvements de capitaux sur l1 quivalence ricardienne au role des decisions de financement dans le processus international de transmission quand il y a controle des mouvements de capitaux et aux effets des controles sur les mouvements de capitaux sur la magnitude des fluctuations induites a travers l economie mondiale par la politique fiscale helpful comments from two anonymous referees are gratefully acknowledged discussion in workshops held at ucla duke university iowa state university queen s university vanderbilt university vpi and the university of western ontario has also been useful canadian journal of economics revue canadienine d economique xviii no 4 november novembre 1985 printed in canada imprime au canada 0008 4085 85 743 65 1 50 canadian economics association this content downloaded from 207 46 13 129 on mon 27 jun 2016 05 25 03 utc all use subject to http about jstor org terms 744 jeremy greenwood and kent p kimbrough

insulation properties under dual exchange rates this paper reviews the insulation properties of a dual exchange rate regime it is shown that in general a dual regime is not successful in insulating the economy from monetary and real shocks of domestic and foreign origin the existence of incomplete segmentation of markets as well as the role played by real exchange rate changes as channels of transmission of disturbances to real equilibrium output are discussed

price competition in pharmaceuticals the case of anti infectives a fundamental question in industrial organization regards the relationship between price and the number of sellers this relationship has been particularly important in the pharmaceutical industry where legislative changes were specifically designed to foster competition previous research on the pharmaceutical industry has shown generic entry has a mixed impact generic prices fall rapidly with generic entry whereas branded prices tend to increase or decrease only slightly using more complete data focused on one segment of the pharmaceutical industry anti infectives we find that the relationship between pharmaceutical prices and the number of sellers is more like that found in other industries jel l11 l65 d4

real transfers in fixed exchange rate systems and the international adjustment mechanism abstract fixed exchange rates can be maintained by different types of stabilization schemes this paper takes a look at some alternative institutional settings and shows that there is an inherent redistribution mechanism in some of them that will influence the world allocation of consumption an examination of the global adjustment to monetary disturbances illustrates some interesting implications of the institutional differences between alternative systems the results suggest that the description of the international adjustment mechanism under fixed exchange rates given by the monetary approach to the balance of payments is valid only under quite restrictive assumptions

regional and sectoral evidence of the macroeconomic effects of labor reallocation a panel data analysis this paper revisits the sectoral shifts hypothesis by examining unemployment fluctuations for 48 u s states over the period 1990 01 2011 12 we develop a panel approach that incorporates dynamics parameter heterogeneity aggregate factors and cross sectional dependence our findings provide support for a positive and significant effect of the employment dispersion index on unemployment this outcome is robust under alternative specifications and measures of employment dispersion the empirical evidence corroborates the presence and relevance of cross sectional dependence and heterogeneity among states the results show that once unobserved common factors and cross state heterogeneity are taken into account labor reallocation has a significant effect on unemployment that is half the size of the estimate when cross sectional dependence is not taken into account

the source of fluctuations in money evidence from trade credit abstract this paper tests the relative importance of technology shocks and financial shocks as sources of fluctuations in money the model extends the theory of king and plosser 1984 by recognizing that both money and trade credit provide transactions services under certain conditions the co movements between money and trade credit can reveal the nature of the underlying shocks the empirical results strongly suggest that shocks to the financial system account for most of the fluctuations in money in the long run and at business cycle frequencies on the other hand technology shocks appear to be more important at seasonal frequencies

common currencies vs monetary independence we study the optimal monetary policy in a two country open economy model under two monetary arrangements a multiple currencies controlled by independent policy makers b common currencies with a centralized policy maker our findings suggest that i monetary policy competition leads to higher long term inflation and interest rates with large welfare losses ii the inflation bias and the consequent losses are larger when countries are unable to commit to future policies iii the welfare losses from higher long term inflation dominates the welfare costs of losing the ability to react optimally to shocks

exchange controls capital controls and international financial markets this paper examines the effects of restrictions on international financial m arkets in a general equilibrium rational expectations model of a two country world state contingent financial markets allow households t o allocate wealth optimally across states so that the imposition of e xchange and capital controls has roughly speaking only substitution effects but no wealth effect taxes or quantitative controls on purc hases of foreign currency and on the income from foreign assets reduc e international trade in goods lower ex post welfare in the country in which they are imposed and affect nominal prices and the exchange rate copyright 1988 by american economic association

interest rate rules vs money growth rules a welfare comparison in a cash in advance economy abstract this paper considers the welfare consequences of two particularly simple rules for monetary policy an interest rate peg and a money growth peg the model economy consists of a real side that is the standard real business cycle model and a monetary side that amounts to imposing cash in advance constraints on certain market transactions the paper also considers the effect of assuming a rigidity in the typical household s cash savings choice the competitive equilibrium of the economy is not pareto efficient partly because of two distortions a distortion on the capital accumulation decision and a distortion on portfolio choice that arises from the assumed rigidity the principal result of the paper is that the interest rate rule but not the money growth rule entirely eliminates these two distortions and is thus the benevolent central banker s policy choice

capital controls policy an intertemporal perspective abstract this paper studies capital controls policy from an intertemporal perspective using a small open economy model with optimizing agents it derives a policy rule which conforms real world stylized facts and is sustainable in the long run in particular it explicitly models the constraints on the policy rule implied by the dynamics of the economy studying several prevalent policy experiments it is demonstrated that significant real effects are generated by the interaction between controls policy and traditional policy tools this happens as controls affect agents intratemporal asset allocation and intertemporal consumption patterns the use of controls enlarges the set of possible outcomes generating some non traditional results the analysis points to new tradeoffs and hence new dilemmas faced by a government that uses controls

parallel trade international exhaustion and intellectual property rights a welfare analysis this paper analyses the issue of parallel trade arbitrage for products protected by intellectual property rights many countries have traditionally allowed owners of intellectual property rights to prohibit arbitrage in the face of international price discrimination in a well known paper malueg and schwartz 1994 showed that this policy decreases social welfare when the same markets are served in both regimes with and without arbitrage their model considered only the setting of prices and not investment in product development we consider a two stage game where firms choose quality first and then prices since the threat of arbitrage ex post reduces the incentive to invest ex ante the net benefits of parallel trade may vanish we also show that the size of the welfare effects is significantly affected by the presence of a generic product which represents a form of competition for the monopolist the monopolist will introduce a fighting brand to compete with the generic which dilutes but does not eliminate the result on the adverse effects of parallel trade on investments

insulation properties of a two tier exchange market in a portfolio balance model when countries peg their currencies to those of their major trading partners they expose themselves to interest sensitive and speculative capital flows that can undermine their ability both to maintain their exchange rate and to pursue an independent monetary policy some countries notably france italy and the belgo luxembourg economic union bleu experimented with two tier exchange rates in the early 1970s in the hopes of insulating their economies from the effects of international capital flows while at the same time protecting foreign trade from exchange rate fluctuations france and italy soon abandoned the experiment but the bleu continues to maintain separate exchange markets with separate exchange rates for current and capital account transactions the commercial exchange rate which relates to the market for current account transactions is generally pegged by the authorities the financial exchange rate determined in the market for capital account transactions is usually free to fluctuate 1 this paper investigates how well a two tier exchange market insulates a small open economy from foreign disturbances taking into account recent developments in the theory of exchange rate determination work by branson 1977 dornbusch 1976 and kouri 1976 suggests that the short run equilibrium value of the exchange rate is determined along with interest rates by demand and supply in the markets for financial assets this asset market or portfolio balance approach to exchange rate determination is particularly well suited to a study of the two tier exchange market one can view the financial exchange rate as a relative asset price it is among the variables that equilibrate asset markets and it is determined in the short run in those asset markets previous theoretical work on the two tier exchange market has generally been within the mundellian framework the financial exchange rate has been treated as equating a flow demand and supply of foreign exchange the asset market approach has the advantage of carefully distinguishing between stocks and flows in particular it treats demands for assets as stock demands that are realized instantaneously so that actual holdings of assets always reflect the desired composition of the portfolio disturbances to portfolio equilibrium create immediate stock adjustments as portfolios are rebalanced causing instantaneous changes in endogenous market clearing variables in addition disturbances alter the rate of accumulation the flow of financial assets over time portfolio balance models of two tier exchange rates can be found in dornbusch 1976 and decaluwe and steinherr 1976 but they differ from the one presented here dornbusch partitioned the exchange market so that interest income a current account transaction was channelled through the financial market that segmentation yields a different expected rate of return on foreign

capital controls and international trade finance abstract this paper studies the effects of prohibiting individuals from holding foreign assets but of allowing firms to trade in foreign assets only up to what is needed to finance export and import activities although firms can perform arbitrage between domestic and foreign financial markets the distortions in asset markets are not fully arbitraged away but instead are transmitted to domestic goods markets the dynamics and steady state responses to a variety of shocks are crucially affected by capital controls even in the presence of capital controls the volatility of domestic interest rates can be substantial

macroeconomic policy exchange rate dynamics and optimal asset accumulation the paper develops a model of exchange rate and current account determination for a small economy peopled by infinitely lived utility maximizing households in this setting a central bank purchase of foreign exchange has no real effects when central bank foreign reserves earn interest at the world rate and proceeds are returned to the public in contrast an increase in the monetary growth rate does have real effects even in the long run the model developed here implies that an increase in government spending may lead to a surplus on current account the external adjustment process predicted by the model is one in which consumption real balances and external assets all rise or fall simultaneously

foreign exchange controls and liquidity abstract this paper analyzes the liquidity effects generated by foreign exchange controls in a two country two good two currency cash in advance world economy taxes on the purchases of foreign currency induce redistribution of liquidity in international financial markets which results in co movements of macroeconomic aggregates in the two economies fluctuations in exchange rates and interest rates and changes in welfare of economic agents of each country as the cash in advance constraints generate distortions in the world economy there will be a welfare improvement if these controls relax the liquidity constraints

determinants of the spread in a two tier foreign exchange market abstract the determinants of the spread between the commercial and financial exchange rates are analyzed in a two tier exchange market model derived from utility maximization contrary to popular belief it is found that domestic policy and non policy variables have no effect on the spread only foreign factors matter

the welfare implications of foreign exchange intervention abstract this paper examines the welfare implications of foreign exchange intervention in a two country two currency general equilibrium model with limited participation in financial markets and cash in advance constraints on transactions both sterilized and nonsterilized intervention operations have significant impacts on the allocation of liquidity in international financial markets and therefore affect real economic activities the welfare effects of shocks to monetary policy sterilized and nonsterilized foreign exchange interventions are examined and compared the design of welfare maximizing intervention policy rules is also discussed