punishment strategies in repeated games evidence from experimental markets abstract an experiment is designed to provide a snapshot of the strategies used by players in a repeated price competition game with a random continuation rule one hundred pairs of subjects played the game over the internet with subjects having a few days to make their decisions in each round occasionally subjects are asked to enter one period ahead pricing strategies instead of prices according to the elicited strategies between 90 and 95 of subjects punish less harshly in their initial response to a deviation than implied by the grim trigger strategy and do so in a way that depends on the size of the other subject s deviation future earnings are highest for subjects adopting the tit for tat strategy even after controlling for a subject s past earnings punishment strategies are generally softer and more graduated than implied by a grim trigger strategy and do better as a result

some empirical evidence on the effects of shocks to monetary policy on exchange rates this paper investigates the effects of shocks to u s monetary policy on exchange rates we consider three measures of these shocks orthogonalized shocks to the federal funds rate orthogonalized shocks to the ratio of nonborrowed to total reserves and changes in the romer and romer index of monetary policy in sharp contrast to the literature we find substantial evidence of a link between monetary policy and exchange rates specifically according to our results a contractionary shock to u s monetary policy leads to i persistent significant appreciations in u s nominal and real exchange rates and ii significant persistent deviations from uncovered interest rate parity in favor of u s interest rates

real exchange rate volatility and economic openness theory and evidence this paper relates the volatility of the trade weighted effective real exchange rate to the degree of trade openness of an economy the theoretical part presents an intertemporal monetary model of a small open economy with nominal rigidities both monetary and aggregate supply shocks are shown to produce ceteris paribus smaller real exchange rate movements if the country is more open to foreign trade empirical evidence on a cross section of forty eight countries confirms this relationship differences in trade openness explain a large part of the cross country variation in the volatility of the effective real exchange rate

price wars in price setting supergames this paper presents a method of generating price wars in price setting supergames the market is one where symmetric oligopolists produce a differentiated product and use price as a strategic variable prices are posted and can be observed by all there is thus little uncertainty or scope for secret price cutting nevertheless price wars occur they are precipitated by periodic but infrequent demand shocks firms use the wars to learn about changed conditions in the market so that they can calculate the new stationary nash equilibrium learning is modeled in a bayesian fashion via the kalman filter copyright 1989 by the london school of economics and political science

interfirm rivalry in a repeated game an empirical test of tacit collusion rivalry in the vancouver retail gasoline market is modeled as a repeated game service station demand cost and intertemporal reaction functions are estimated from daily data on individual station prices costs and sales these functions are then used to calculate noncooperative and cooperative solutions to the constitutent game and the actual outcome of the repeated game the actual outcome is found to be substantially less lucrative than the monopoly solution nevertheless all stations are better off than if they played their noncooperative strategies in every period copyright 1987 by blackwell publishing ltd

international evidence on the demand for money one of the current questions in the literature on the demand for money is whethe r the adjustment of actual to desired money holdings is in nominal or real terms this paper describes a simple procedure that can be used to test the nominal against the real hypothesis the test is carried out for twenty seven countries the paper also tests the structural stability of the demand for money equations and the correctness of th e dynamic specification the results are strongly in favor of the nom inal adjustment hypothesis there is however some evidence of moder ate structural instability before and after 1973 the instability doe s not affect the conclusion that the nominal adjustment hypothesis do minates the real adjustment hypothesis copyright 1987 by mit press

industry structure and the speed of price adjustment recent work has suggested that there is an association between the degree of concentration in an industry and the speed at which prices adjust to changes in prime costs cagan 8 domberger 12 13 scherer 21 p 356 and the references cited therein apart from its intrinsic interest to students of industrial economics there would seem to be three reasons for investigating this association first to see what light if any it throws upon the influence of industrial structure on the price level together with the rate and process of inflation secondly to test the assumption made in some influential studies e g godley and nordhaus 15 coutts godley and nordhaus 10 and haig and wood 18 that the size of the lag between cost and price changes is solely dependent upon the length of the fabrication production and delivery period in the various industries the third reason is a belief held by the author that distributed lag coefficients in econometric studies should be subject to analysis and not left hanging in the air as part of the development of a large scale econornetric model of the australian economy the imp model a team of researchers under the direction of dr brain at melbourne university have estimated price prime cost equations for 43 manufacturing sectors using annual data referring to the period 1948 49 1973 74 1 the estimating equation is of the form

does greater trade openness reduce inflation further evidence using panel data techniques abstract in this article we estimate the relation between inflation and trade openness q j econ 108 1993 869 the higher the gains in terms of product in generating an inflationary surprise the greater the incentives will be for the government to effect such a surprise

rules communication and collusion narrative evidence from the sugar institute case detailed notes on weekly meetings of the sugar refining cartel show how communication helps firms collude and so highlight the deficiencies in the current formal theory of collusion the sugar institute did not fix prices or output prices were increased by homogenizing business practices to make price cutting more transparent meetings were used to interpret and adapt the agreement coordinate on jointly profitable actions ensure unilateral actions were not misconstrued as cheating and determine whether cheating had occurred in contrast to established theories cheating did occur but sparked only limited retaliation partly due to the contractual relations with selling agents jel l13 l41 this paper reexamines the cartel problem by studying the private discussions within one cartel while we find much that is in accord with george j stigler s 1964 basic insight that firms would structure an agreement conscious of their later incentive to cheat on it we also uncover puzzles for established theory and identify elements that a richer theory should encompass especially regarding the role of communication in collusion our window into the inner workings of a cartel is a remarkable series of notes on the weekly meetings of the sugar institute this trade association was formed in december 1927 in the wake of several years of falling margins and excess capacity by 14 firms comprising nearly all the cane sugar refining capacity in the united states it operated until 1936 when the supreme court ruled its practices illegal among the top executives in regular attendance at the meetings was louis v place vice president of mccahan a midsize refinery in philadelphia place who was in charge of all activities of the company except production and raw sugar purchases wrote over 500 pages of single spaced detailed

discretionary inflation in a general equilibrium model this paper extends the barro and gordon 1983 model to a general equilibrium framework in which the costs and benefits to surprise inflation reflect the preferences technology and market structure of the economy the benefit of such an approach is that we can relate the underlying features of the economy to the size of the inflation bias in particular it can be shown that an increase in the source of the monetary authority s incentive to inflate does not necessarily result in a worsened inflation bias due to offsetting changes in the cost of inflation furthermore changes in the real interest rate affect the monetary authority s incentives and hence the discretionary level of inflation lastly we can show that an increase in the labor share of national income worsens the inflation bias the model also indicates the importance of a nominal rigidity lack of policy precommitment and a distortion for optimal monetary policy to be characterized by a level of discretionary inflation that exceeds the friedman 1969 rule

strategic pricing models and interpretation of price war data abstract price wars cartel breakdowns and other seemingly disequilibrium pricing phenomena are examined questions of interest include when do breakdowns occur how long do they last what determines their severity and are they characterized by increased cross sectional price dispersion and or temporal price volatility the first half of the paper explains how the choice of punishment strategy the specification of the stochastic shocks to the system and the assumptions regarding observability determine the pricing dynamics implicit in several theoretical price war models theories are classified into imperfect monitoring models in which players actions cannot be observed learning models in which structural parameters are unknown to the players and cyclical models in which observability is perfect but business cycles affect the difficulty of colluding the second half in contrast examines data on prices actually set by firms in industries which are subject to periodic wars when the models are confronted with the data we can see how well oligopoly theory explains the behavior of the firms in these industries the object of the exercise is not to pick a winner instead the role of industry characteristics in determining pricing dynamics is assessed and the reasons why simple models may fail to explain complex pricing patterns are examined finally directions for future research are suggested by the empirical regularities which are uncovered

why shops close again an evolutionary perspective on the deregulation of shopping hours this paper introduces a new perspective on the deregulation of shopping hours based on ideas from evolutionary game theory we study a retail economy where shopping hours have been deregulated recently it is argued that first the deregulation leads to a coordination problem between store owners and customers and second the solution to this problem depends on the specific cost structure of stores and the preferences of customers in particular it may happen that even if extended shopping hours are pareto efficient stores and customers do not succeed in coordinating on this equilibrium the analysis explains the observation in germany where shopping hours have been deregulated recently that store owners tend to go back to the former shopping hours again moreover it emphasizes the important role of advertisement campaigns as a signalling device

testing commitment models of monetary policy evidence from oecd economies in ation rates in a number of oecd follow a common trend over the past four decades in ation starts out low in the 1960s rises for a time before peaking in the 1970s or early 1980s and then falls back to initial levels this similarity in the behavior of trend in ation suggests that any explanation of long run in ation trends ought to apply across oecd countries ireland 1999 shows that a simple time inconsistency model of monetary policy modifled to allow for a time varying nairu can explain long run trends in u s in ation in this paper we show that this result cannot serve as an explanation of the common trend in oecd in ation as it flts the data only in the u s we investigate two important variants of the hypothesis i that time inconsistency was an important component of central bank behavior in earlier decades but has become less signiflcant in recent years and ii that time inconsistency problems drive u s in ation which afiects in ation rates in other countries as a result of central bankers attempts to manage nominal exchange rate movements vis a vis the u s dollar we flnd that the flrst hypothesis flts the data no better than the baseline model we flnd some support for the international spillovers version of the model but the behavior of non u s central bankers with respect to domestic unemployment rates is not well described by the time inconsistency mechanism

normal costs and demand effects in price setting a study of retailing the study aims at contributing to the debate whether there are demand effects in models that seek to explain prices as mark ups on costs for costs it considers actual costs normal costs and an intermediate model with a partial adjustment to the deviation of actual from normal costs for demand effects it considers an effect on the price level of a change of demand with an allowance for asymmetry between demand growth and demand decline tests and estimates are conducted on the basis of data from retailing

collusion fluctuating demand and price rigidity we study an infinitely repeated bertrand game in which an i i d demand shock occurs in each period each firm receives a private signal about the demand shock at the beginning of each period at the end of each period all information but the private signals becomes public we consider the optimal symmetric perfect public equilibrium sppe mainly for patient firms we show that price rigidity arises in the optimal sppe if the accuracy of the private signals is low we also study the implications of more firms and firms impatience on collusive pricing empirical evidence shows that prices in oligopolistic markets tend to be more rigid than prices in competitive markets dixon 1983 carlton 1986 this suggests that collusion may result in firms inflexible pricing behavior it is not obvious however that collusion causes price rigidity why do colluding firms not adjust prices according to changing environments by which they can potentially earn higher profits what limits colluding firms ability to coordinate thereby leading to price rigidity in this article we study how information asymmetry among firms limits colluding firms ability to respond to demand shocks and characterize the conditions under which prices are rigid specifically we consider private information about demand in an infinitely repeated bertrand game with two identical firms in which an i i d binary demand shock occurs in each period each firm receives a conditionally independent private signal about the underlying demand state at the beginning of each period and then charges a price the accuracy of private signals is measured by the probability of receiving a high respectively low signal conditional on a high respectively low underlying demand state therefore the lower the accuracy the higher the degree of informational asymmetry at the end of each period firms observe the underlying demand and the prices but they never observe their rivals signals we adopt symmetric perfect public equilibria sppe as our solution concept which requires that at each period firms pricing schemes

shopping hours and price levels in the retailing industry a theoretical and empirical analysis i introduction the debate surrounding shopping laws is very much the same regardless of the country in which it occurs the traditional objectives of regulating store opening hours can be divided into four categories i to guarantee access to essential goods and services ii to promote and protect a certain way of life iii to protect small businesses and iv to assure a day of rest for everyone despite these concerns the recent trend in canadian provinces is to extend store opening hours in the retailing industry for instance in july 1990 the quebec government allowed retail stores to stay open on wednesday nights and on sundays the recent deregulation was prompted by changes in lifestyles and increasing constraints on the time people can devote to shopping activities perhaps the most significant are that the number of one parent families is increasing as is the number of couples in which both spouses work there is evidence that changes in opening hours influence the structure of the retailing industry morrison and newman 1983 show that there is a redistribution of sales from small stores to large stores after deregulation an empirical study by moorehouse 1984 shows that in the united states those states that strictly regulate store opening hours do have a smaller proportion of large stores building on their work we examine the short term impact of extended shopping hours on prices at large stores to determine whether consumers have to pay higher prices for greater shopping flexibility to our knowledge this issue has not been addressed in the literature first we develop an extension of morrison and newman s 1983 theoretical model inspired by becker 1965 and location models pioneered by hotelling 1929 chamberlin 1951 1962 lancaster 1966 and salop 1977 we deem the price of a good to have two components the price itself and the time spent by the consumer to purchase the good thus opening hours and store location play a role in the determination of prices we explore the effect of increased opening hours on the demand faced by stores of different sizes and thus on their price levels among other things our model predicts that after deregulation price levels at large stores will increase because of a demand shift in favor of large stores at the expense of small stores we then test this prediction using pooled time series and cross section data prices of five products for thirty one weeks collected before and after the deregulation of store hours in quebec on july 8 1990 the data were collected at three major food stores in the montreal area we obtain estimates of price equations using the pooling method developed by kmenta 1986 the results support our view that prices have increased at large stores since the deregulation the rest of the paper is organized as follows in section ii we develop our analytical framework section iii presents the data and the estimation strategy since a price increase may signal an increase in costs rather than an increase in demand we deal explicitly with this issue in that section of the paper we discuss the empirical results in section iv and we conclude in section v ii the model the following analysis extends that of morrison and newman 1983 a brief initial overview of their work is needed to develop the necessary notation and to set up the problem in their model morrison and newman make two simplifying yet standard assumptions they assume a single perfectly divisible homogeneous commodity and only two types of stores large and small thus consumers choose to shop at small or large stores to minimize the total cost tc of purchasing the commodity on a given shopping trip the total cost includes the cost of the bundle of goods p sub j b where p sub j is the price per unit at store j and b is the bundle size a consumer intends to buy and his own valuation of the time needed to travel to the store a

international evidence on tradables and nontradables inflation abstract using 1970 1985 sectoral data for the oecd we find that inflation in nontradable goods exceeds inflation in tradables we identify a demand shift towards nontradables and faster growth of total factor productivity in the tradable goods sector as the prime causes of the differential inflation in addition disinflation attempts and the exchange rate regime appear to have exerted significant influence on the relative inflation rate

firm size effects on transaction costs associated with effects of scale scope experience and learning there are effects of firm size on transaction costs in the stages of contact contract and control these effects are due to threshold costs in setting up contacts contracts and governance schemes and to differences with respect to the factors that cause transaction costs bounded rationality opportunism uncertainty and transaction specificity of assets implications are considered for firm strategy and public policy

labor market dynamics in the u s food sector a simultaneous equation model is estimated to explain labor market phenomena including wages employment and labor productivity and food prices at manufacturing and retail levels of the u s food industry dynamic simulation results show that endogenizing input costs in a fully specified markup pricing model leads to a complex long run pattern of food price determination wage determination is found to play a central role linking general price levels to food sector prices and labor market behavior energy price changes are shown to significantly affect food prices food sector labor productivity is found to decline in response to exogenous commodity price shocks

competitive depreciation and the role of distorting taxes in an interdependent economy abstract this paper investigates the manners in which international cooperation in monetary policies affects the rate of inflation in a two country sticky price model within reasonable parameter values international monetary coordination increases the steady state inflation for given tax policies when the tax regime is endogenously chosen however self oriented monetary policies can engage in competitive depreciation and induce a higher average inflation than the first best inflation rate

collusion and price rigidity we consider an in nitely repeated bertrand game in which prices are publicly observed and each rm receives a privately observed i i d cost shock in each period we focus on symmetric perfect public equilibria sppe wherein any punishments are borne equally by all rms we identify a tradeoff that is associated with collusive pricing schemes in which the price to be charged by each rm is strictly increasing in its cost level such fully sorting schemes offer efficiency bene ts as they ensure that the lowest cost rm makes the current sale but they also imply an informational cost distorted pricing and or equilibrium path price wars since a higher cost rm must be deterred from mimicking a lower cost rm by charging a lower price a rigid pricing scheme where a rm s collusive price is independent of its current cost position sacri ces efficiency bene ts but also diminishes the informational cost for a wide range of settings the optimal symmetric collusive scheme requires i the absence of equilibrium path price wars and ii a rigid price if rms are sufficiently impatient however the rigid pricing scheme cannot be enforced and the collusive price of lower cost rms may be distorted downward in order to diminish the incentive to cheat when the model is modi ed to include i i d public demand shocks the downward pricing distortion that accompanies a rm s lower cost realization may occur only when current demand is high

international monetary policy coordination and competitive depreciation a reevaluation is there a need for international coordination of monetary policies within the current system of floating exchange rates in a recent paper obstfeld and rogoff 1995 argue that in an environment of sticky prices under floating exchange rates monetary policy shocks will generate positive welfare spillovers across countries this leads to the conclusion that international monetary policy coordination is unnecessary and may in fact be undesirable since it nurtures a bias towards high inflation our paper shows that these conclusions are dependent on the manner in which prices are set when firms engage in pricing to market ptm setting prices in the currency of the buyer monetary policy tends to have negative welfare spillovers this gives an incentive to engage in competitive depreciation in a noncooperative equilibrium world inflation will be higher the greater the importance of ptm with a high degree of ptm it follows that the case for international monetary policy coordination is restored if ptm is at an intermediate range however international monetary coordination may have no consequences at all

openness exchange rate regimes and the phillips curve abstract recent research suggests that the phillips curve slope measured using sacrifice ratios from the period 1961 88 is positively related to trade openness contradicting the romer 1993 openness and inflation theory and evidence quarterly journal of economics 108 869 903 hypothesis that disinflations are less costly in open economies in this paper i consider sacrifice ratios and output inflation trade offs from 1981 98 and allow their dependence on openness to vary with the exchange rate regime sacrifice ratios are weakly negatively related to openness but the strength of the relationship does not increase with exchange rate flexibility output inflation trade offs are negatively related to openness and the strength of the relationship increases with exchange rate flexibility

on the performance of nominal income targeting as a strategy for monetary policy in a small open economy abstract there is a great deal of support for nominal income targeting in the literature on strategies for monetary policy in a closed economy framework is nominal income targeting equally attractive in a small open economy this paper compares nominal income targeting to alternative monetary policy rules in a stochastic macro model for a small open economy we find that both the weighting in the overall price level of the exchange rate and foreign prices and the elasticity of output supplied with respect to the real exchange rate are important factors in assessing the attractiveness of nominal income targeting in a small open economy where the size of both parameters is not negligible a rule targeting the overall price level may actually be preferred to nominal income targeting

the new open economy macroeconomics of government debt in this paper we introduce an overlapping generations structure of the blanchard type in a new open economy macroeconomics model this allows us to study a wider range ofscal shocks compared to the traditional mundell fleming and to the baseline redux models one important policy implication of our model is that the tax cut imple mented in the us in 2001 might have contributed to the appreciation of the dollar vis a vis the euro in contrast the imposition ofscal constraint such as the golden rule proposed by the uk government can have opposite exchange rate e ects

does globalisation discipline monetary policymakers abstract this paper analyses globalisation using a small general equilibrium model it concludes that whether increased openness a reduction in the costs of international trade helps to discipline monetary policy in large open economies depends on the type of trade costs moreover to the extent that globalisation induces stronger competition in the goods market this may also have an adverse effect on monetary policy discipline the latter is due to international expenditure switching which becomes a more forceful channel as competition intensifies thus the answer to the question in the title is not necessarily affirmative

a model of pricing behavior an econometric case study empirical pricing studies are scarce in the modern literature in spite of their obvious importance for understanding competition the present study employs a structural model to identify deviations of individual pricing routines from the commonly assumed single period profit maximization it is applied to individual wholesale firms because wholesale pricing has a decisive influence on the price formation in the entire economic system and because hardly any research exists in this area the results show that wholesale firms operate in imperfectly competitive world markets providing a highly differentiated service package traders apply pricing rules consistent with cost mark up pricing the mark up varies among traders with the extent to which a firm s pricing strategy deviates from full profit maximization this divergent behavior is associated with firm size the type of buyers served and other aspects of the wholesale service package

useful government spending direct crowding out and fiscal policy interdependence this paper introduces perfect substitutability between private and public consumption in a dynamic open economy with imperfect competition and nominal rigidities this implies a direct crowding out effect that generalising to the two country case some well known properties of a closed economy tends to reduce consumption following both domestic and foreign expansions a less expected result is that sub stitutability has a positive effect on the short run output spillover we also show that if we modify the model to allow for home bias in government spending temporary fiscal expansions display a quasi neutrality property

a theory of dynamic oligopoly ii price competition kinked demand curves and edgeworth cycles we provide game theoretic foundations for the classic kinked demand curve equilibrium and edgeworth cycle we analyze a model in which firms take turns choosing prices the model is intended to capture the idea of reactions based on short run commitment in a markov perfect equilibrium mpe a firm s move in any period depends only on the other firm s current price there are multiple mpe s consisting of both kinked demand curve equilibria and edgeworth cycles in any mpe profit is bounded away from the bertrand equilibrium level we show that a kinked demand curve at the monopoly price is the unique symmetric renegotiation proof equilibrium when there is little discounting we then endogenize the timing by allowing firms to move at any time subject to short run commitments we find that firms end up alternating thus vindicating the ad hoc timing assumption of our simpler model we also discuss how the model can be enriched to provide explanations for excess capacity and market sharing keiiwords tacit collusion markov perfect equilibrium kinked demand curve edgeworth cycle excess capacity market sharing endogenous timing

openness inflation and the phillips curve a puzzle models of open economies with nominal rigidities are often thought to predict a correlation between openness to trade and the slope of the output inflation trade off or phillips curve using a variety of measures of the trade off and a standard measure of openness this paper argues that the direct evidence for a correlation is not strong in turn this calls into question the usual explanation for the negative correlation between openness and inflation that was documented by romer 1993 the paper considers some alternative explanations for the romer evidence

exchange rate determination the role of factor price rigidities and nontradeables this paper introduces factor labor markets into the intertemporal monetary model of obstfeld and rogoff and combines this richer market structure with a new utility independent representation of nontradeables this allows us to explore the international monetary transmission mechanism for factor price wage rigidities under different degrees of macroeconomic openness factor price rigidities imply similar properties for the international transmission mechanism as domestic producer price rigidities nontradeables give raise to interesting new effects under asymmetric monetary shocks they create short run ppp deviations increase exchange rate volatility relative to price level volatility and reduce positive consumption and negative output comovements 2000 elsevier science b v all rights reserved

monopolistic competition relative prices and output adjustment in the open economy abstract this paper explains price and output dynamics in an open economy characterized by a monopolistic competitive market structure in which pricing decisions incur costs this leads producers to pre set the price path for several periods the paper derives an optimal pricing rule including the optimal pre setting horizon it does so for a rational expectation equilibrium characterized by staggered unsynchronized price setting for which the degree of staggering is endogenously determined

trade union density and inflation performance evidence from oecd panel data this paper examines the impact of union membership rates on inflation in oecd countries a positive effect of union density is estimated even after controlling for fixed effects and time dummies additional institutional characteristics for example union coordination employment protection laws and central bank independence do not affect inflation directly in a panel setting but do influence the size of the unionization coefficient via interaction terms the results are robust to controlling for potential common causes such as oil price shocks and the political stance of the government and to using gmm iv techniques to handle possible endogeneity biases

a near rational model of the business cycle with wage and price inertia this paper presents a model in which insignificantly suboptimal behavior causes aggregate demand shocks to have significant real effects the individual loss to agents with inertial price wage behavior is second order in terms of the parameter describing the shock while the effect on real economic variables is first order thus significant changes in business activity can be generated by anticipated money supply changes provided that some agents are willing to engage in nonmaximizing behavior which results in small losses

the macroeconomic effects of monetary and fiscal policy in a small open economy does the exchange rate regime matter abstract this paper develops a small open economy model in the spirit of obstfeld and rogoff 1995 the introduction of endogenous traded sector output unlocks current account and real exchange rate effects within this framework where specific consideration is given to the case with fixed but adjustable parities exchange rate devaluation generates similar qualitative effects as a money supply expansion under floating rates output and external effects of government spending shocks are broadly consistent with the adjusted basic non micro founded mundell and fleming mf framework but differ in significant ways from the baseline mf model contrary to the textbook mf model a government expenditure shock depreciates the nominal exchange rate and generates real effects under the fixed rate system

fiscal consolidation under fixed exchange rates abstract we present the fixed exchange rate version of the obstfeld and rogoff model and analyze the international transmission of fiscal policy shocks the welfare effects of an unanticipated contraction in government expenditure in the home country are shown to depend crucially on the way in which world money stock is set if home authorities alone are responsible for pegging the exchange rate a fiscal adjustment leads to a decrease in the real interest rate stimulates private consumption and limits the contraction in world output compared with a situation in which a cooperative scheme is implemented the model is then used to propose a new interpretation of recent events in the eu countries that have enacted restrictive fiscal policies while pegging their currencies to the dm

public debt indexation and denomination with an independent central bank abstract this paper examines the interaction between public debt management and the design of monetary institutions the analysis shows that delegation of monetary policy to an independent central bank is more effective in containing inflationary expectations than the use of foreign currency or inflation indexed debt if delegation of monetary policy is viable the optimal policy is to issue nominal debt this increases the sensitivity of taxes and output to unexpected inflation thus minimizing the inflation needed to offset supply shocks evidence on central bank independence debt composition and output variability suggests that the normative argument has some positive content

after work shopping employment effects of a deregulation of shop opening hours in the german retail sector abstract this study investigates the impact of a deregulation of shop opening laws on employment in the german retail sector exploiting the gradual change in the opening times of shops across states and using data from the german socio economic panel difference in differences estimates indicate an average increase in the employment probability driven by a rise in the likelihood of working marginal part time hours workers in small firms are likely to experience a reduction of their propensity to work for individuals facing high family related supply side constraints the change in shop opening hours has opposing effects on employment positive on lower and negative on upper parts of the hours distribution overall the deregulation is estimated to have raised the likelihood of working fewer hours than desired by the workers

welfare and macroeconomic interdependence we develop a baseline model of monetary and fiscal transmission in interdependent economies the welfare effects of expansionary policies are related to monopolistic supply in production and monopoly power of a country in trade an unanticipated exchange rate depreciation can be beggar thyself rather than beggar thy neighbor as gains in domestic output are offset by deteriorating terms of trade smaller and more open economies are more prone to suffer from inflationary shocks larger economies benefit from moderate demand led expansions but may be worse off if policy makers attempt to close the output gap fiscal shocks are generally beggar thy neighbor in the long run in the short run they raise domestic demand at given terms of trade thus reducing the welfare benefits from monetary expansions analytical tractability makes our model uniquely suitable as a starting point to approach the recent new open economy macroeconomic literature

industrial structure concentration and the speed of price adjustment it is argued that the relationship between market structure and the speed of price adjustment involves two distinct forces with opposing directions t he leadership effect and the industry profitability effect the direction of the relationship will depend on the relative importance of these effects estimation of an equation explaining the speed of price adjustment in terms of industrial concentration and the length of the production period provided evidence of negative effects for bo th the above variables copyright 1988 by blackwell publishing ltd

the kinked demand curve a game theoretic approach in a simple model of duopoly firms price moves are modelled as an extensive form game where firms can respond to undercutting without delay when firms are not too dissimilar kinked demand strategies enforcing an arbitrary price may be nash equilibria however these strategies are dominated and perfect equilibrium is unique at the minimum optimal common price rather than implying price rigidity kinked demand strategies are a device for ensuring compliance with a collusive price leadership

monopolistic competition and the effects of aggregate demand how important is monopolistic competition to an understanding of the effects of aggregate demand on output we ask the question at three levels can monopolistic competition by itself explain why aggregate demand movements affect output can it together with other imperfections generate effects of aggregate demand in a way that perfect competition cannot if so can it give an accurate account of the response of the economy to aggregate demand movements the answers are no yes and yes

income velocity of money in agricultural developing economies t he response of income velocity of money to economic growth has implications for monetary planning in a developing economy velocity is the ratio of nominal income to money stock and decreases only if money stock rises at a faster rate than nominal income a well known hypothesis in this context is that of friedman 1959 which states that in countries experiencing a secular rise in real income per capita the stock of money generally rises over long periods at a decidedly higher rate than does money income i e velocity declines ezekiel and adekunle 1969 and melitz and correa 1970 in their international crosscountry comparisons have found evidence largely in favour of the friedman hypothesis this in its turn has strengthened the hope for active growthoriented monetary planning the extent of resources that can be transferred for investment purposes through non inflationary monetary expansion increases as development proceeds cross section studies involving developed and developing economies do not provide satisfactory indications of what happens to velocity over time in any individual developing economy firstly velocities have not behaved uniformly in all the developing economies secondly international cross country comparisons do not adequately explain why velocity changes in any individual economy is it because money is a luxury good i e income elasticity of demand for money is greater than unity to the agents in the economy is it because economic development brings about structural changes in the economy which lead to the observed behaviour of velocity is it because monetary habits change in a systematic way it is important to have time series analyses of developing economies to provide answers to such questions for example in a study of malaysia and singapore short 1973 found that though velocity did move inversely to per capita income this negative impact was overpowered by the change in monetary habits which the increase in bank offices caused the aim of this paper is to analyse the temporal behaviour of income velocity of money in agricultural developing economies in the literature on velocity and demand for money in developing economies attention is focussed mainly on three issues i the incomeelasticity of demand for money and in particular whether money is a luxury good or not ii the growth of monetisation and changes in monetary habits and iii the effect of the cost of holding money one important factor which has suffered total neglect is the role of sectoral differences in money demand behaviour and the structural shifts in the sectoral composition of income that accompany development money demand behaviour may vary across sectors this is true not only in developing economies but also in developed economies for example goldfeld 1976 has found that the business sector and the household sector in the united states have different money demand functions an implicit specification error is committed in the aggregative money demand or velocity equation whenever the sectoral income composition factor is omitted on a priori grounds this factor should have special significance in developing economies where sectoral shares in national income change over time in the absence of flow offunds accounts and adequate data on sectoral money holdings for most of the developing economies direct estimation of sectoral demand functions is not possible thus an aggregative specification which incorporates the sectoral income composition factor is necessary to analyse the behaviour of velocity

productivity growth in the grocery trade this paper presents a model of the growth of the average efficiency of labour per type of shop as a function of the wage rate use of part time labour labour supply and demand and economies of scale shop size the model is estimated on the basis of data for the grocery trade prior to 1975 this yields a forecast beyond 1975 which is compared with more recent observations are estimate of the model on the basis of data for the grocery trade in the period 1975 78 is found to be in agreement with the original estimate some implications of the model are indicated

public inflation aversion and the political economy of macroeconomic policymaking do the macroeconomic priorities of citizens differ across countries if so what accounts for this variation and what are its consequences for explanations of the choice of monetary institutions macroeconomic policy and international monetary cooperation this article uses survey data from twenty advanced economies to examine individual preferences about macroeconomic priorities the analysis establishes three key findings first the results suggest that economic context defined by inflation and unemployment performance has a substantial impact on the public s economic objectives in a way that is broadly consistent with the specification of utility loss functions in the theoretical political economy literature second the results suggest that there is significant cross country variation in inflation aversion controlling for economic context third some of this variation is accounted for by national level factors affecting the aggregate costs of inflation and unemployment these results have significant implications for optimal monetary policymaking the explanation of variation in economic outcomes and for accounts of the choice of institutional frameworks for policymaking i thank the bank of england the center for basic research in the social sciences and the institution for social and policy studies for research support and jim alt andrew bailey bill bernhard lawrence broz john freeman jeff frieden jim granato shigeo hirano david lake jeff lax simon price rose razaghian ron rogowski david stasavage gabriel sterne mike tomz jim vreeland the editor and two anonymous reviewers for helpful comments all views expressed are those of the author and do not represent those of the bank of england

are fiscal deficits inflationary abstract this paper applies the dynamic panel quantile regression dpqr model under the autoregressive distributional lag ardl specification and examines the deficit inflation relationship in 91 countries from 1960 to 2006 the dpqr model estimates the impact of deficits on inflation at various inflation levels and allows for a dynamic adjustment with the ardl specification the empirical results show that the fiscal deficit has a strong impact on inflation in high inflation episodes and has a weak impact in low inflation episodes the results imply that fiscal consolidation would be more effective in price stabilization the higher the inflation rate is and are consistent with the theoretical model of catao and terrones 2005

the importance of composition of fiscal policy evidence from different exchange rate regimes abstract we study the macroeconomic effects of fiscal policies in an open economy we emphasize two transmission mechanisms the cost channel by which wage government spending and labor taxes raise the real wage firms must pay and the exchange rate channel by which the nominal exchange rate shifts induced by fiscal policy have real effects if some prices and wages are sticky the latter channel implies that changes in wage government spending or in labor taxation should have different effects under flexible than under fixed exchange rates in a 1964 93 panel of oecd countries we find significant evidence for both channels moreover we find that the real product wage and profitability are more responsive than quantities employment and output to fiscal policy innovations

vancouver s gasoline price wars an empirical exercise in uncovering supergame strategies this paper uses a unique data set to determine which dynamic model of tacit collusion best describes behaviour in a particular industry the area investigated is a region of the vancouver british columbia retail gasoline market players are service station managers who compete daily firms choose price in each period using strategies that depend on prices chosen in the previous period periodically unanticipated demand shocks precipitate price wars when shocks occur the firms in the market must determine the new demand conditions and adjust their strategies from an econometric point of view slopes of intertemporal reaction functions are latent variables the resulting system of equations with time varying parameters is estimated via the kalman filter different repeated game oligopoly models correspond to different transition matrices for the latent variables the models can thus be assessed in terms of their power to explain firm behaviour in this market

testing monetary policy intentions in open economies 1 introductionthis article examines the relationship between economic openness and inflation performance among the most prominent research on this topic is the work by romer 1993 he demonstrates a negative relationship between economic openness and the inflation level his finding has also been viewed as supportive albeit indirectly of time consistency theory kydland and prescott 1977 1 romer 1993 argues that policymakers in more open economies have less incentive to adopt an expansionary monetary policy his argument is based on the assumption that monetary surprises in more open economies result in higher inflation for a given increase in output romer s finding that more open economies have lower inflation levels leads him to infer that this is evidence of time consistency in monetary policy practices however romer s work has not been generally accepted temple 2002 provides evidence that the openness inflation correlation does not stem from time consistency theory because the inflation level may not properly reveal the monetary authorities policy intentions temple questions this inference because it starts from a strong but unjustified assumption more open economies possess a relatively steeper phillips curve consequently temple proposes that the examination of the positive relationship between openness and the slope of the phillips curve is a fundamental condition for romer s argument he however finds little support for the positive relationship between economic openness and the slope of the phillips curve further work on the relationship of openness and monetary policy intentions comes from clarida gali and gertler 2001 2002 hereafter cgg in cgg 2001 the authors present a simple open economy model with a taylor type interest rate policy rule taylor 1993 the article concludes that the optimal monetary policy in an open economy has the same solution as that in a closed economy derived in cgg 1999 the authors also suggest that there is a direct link between the degree of economic openness and the aggressiveness of monetary policy they state that o penness does affect the parameters of the model suggesting a quantitative implication h ow aggressively a central bank should adjust the interest rate in response to inflationary pressures depends on the degree of openness cgg 2001 p 248 in subsequent work cgg 2002 revisit the issue based on a dynamic open economy new keynesian model and the role of monetary policy in open economies is refined consistent with the argument in cgg 2001 they find that the optimal monetary policy rule in an open economy is isomorphic to that in a closed economy in the nash equilibrium they also suggest that openness does not affect the optimality of a policy rule in such a scenario on the other hand economic openness does affect optimal monetary policy when the foreign optimal policy is endogenous in the domestic country s objective function this effect however is ambiguous in direction because the relationship between the degree of economic openness and the aggressiveness of monetary policy is determined by the relative size of trade and wealth effects of changes in foreign output this line of theoretical literature is limited and does not offer a definitive conclusion on the relationship between economic openness and monetary policy intentions our article provides an alternative empirical evaluation of the relationship based on prior literature we use inflation variability and persistence as the measures of monetary policy intentions one branch of the literature such as taylor 1999 cgg 2000 and owyang 2001 argues that aggressive monetary policy reduces the volatility of inflation for instance cgg 2000 estimate a forward looking taylor rule for the period between 1960 i and 1996 iv they use paul volcker s appointment as chairman of the federal reserve system as a regime shift to a more aggressive anti inflation policy stance

the economic efficiency of sunday trading restrictions restriction of shop opening hours is current but controversial pr actice in britain and much of europe the economic case presented for such restrictions is that given the constraint that individual shop s may not vary their price by time of day competitive pressures woul d induce excessive opening at times when high costs would be incurred such as on sundays the authors show that such inefficient equilib ria are a theoretical possibility empirical evidence on retail costs and demand in the united kingdom shows that this case does not arise in practice and that deregulation of opening hours would lead to low er costs and prices copyright 1987 by blackwell publishing ltd

price dynamics in uk manufacturing a microeconomic view this paper examines the response of prices to cost and demand shocks in seventy five three digit and four digit industries in the united kingdom during the 1980s the results suggest that prices responded sluggishly to costs but virtually not at all to demand the short run response to materials and fuel shocks was much larger than the response to unit labor cost shocks and some of this difference persisted into the long run prices responded more sluggishly to cost and demand shocks when aggregate inflation was lower and finally pricing dynamics were more sluggish in less competitive industries copyright 1992 by the london school of economics and political science

on the flexibility of monetary policy the case of the optimal inflation tax this paper examines optimal monetary policy under uncertainty in a context in which policy makers are able to make credible policy commitments we study an optimal taxation problem of minimizing the social cost of financing a stochastic and exogenous level of government transfers since in the basic model the welfare costs of inflation derive only from expected inflation the optimal monetary policy is highly responsive to the state of nature in a benchmark case in which all shocks are transitory the optimal policy calls for loading all the variability of government transfers on the shoulders of the inflation tax

tacit collusion with price matching punishments abstract tacit collusion is explored under a strategy in which loosely speaking firms match the lowest price set by any firm in the previous period conditions are provided under which this strategy supports collusive outcomes in a subgame perfect equilibrium in contrast to traditional results the highest collusive price is always lower than the monopoly price it corresponds to the unique nash equilibrium price when upward and downward price deviations are matched our paper provides a game theoretic interpretation of the old kinked demand curve theory which unlike earlier attempts does not depart from standard timing assumptions to do so

price wars and the stability of collusion a study of the pre world war i bromine industry between 1885 and 1914 us bromine producers colluded to raise prices and pro ts this collusion was disrupted by price wars bromine price wars are compared with the green porter and abreu pearce stacchetti models some price wars resulted from the imperfect monitoring problems which motivate these models several empirical implications of the aps model are borne out but the bromine industry s price wars were generally milder than contemplated by aps more severe price wars were part of a bargaining process in which rms tried to force renegotiation to a new collusive equilibrium with a diierent distribution of rents

globalization the output inflation tradeoff and inflation abstract this paper provides comprehensive evidence on the relation between inflation and globalization defined here as trade and financial openness using a large cross section of 91 countries over the period 1985 2004 we establish two main empirical regularities both higher trade and financial openness i reduce central banks inflation bias yielding lower average inflation and ii are associated with a larger output inflation tradeoff this evidence is at odds with the standard barro gordon framework which would require globalization to have a negative effect on the output inflation tradeoff to yield lower equilibrium inflation but it is consistent with a recent strand of new keynesian models emphasizing the role of imperfect competition and nominal rigidities our findings also support the relevance of the time inconsistency hypothesis which underlies the theoretical models predicting a relation between globalization and inflation for the oecd subsample however we do not find an effect of openness on inflation the output inflation tradeoff suggesting that these countries have created an institutional framework for central banks that eliminates distortions due to the time inconsistency problem

small business economics a perspective from the netherlands textabstractin the analysis of economic phenomena either within or across industries there is room for integrating the role of small business this contribution can be made by aggregation or generalization of the findings at the meso level which again are partly based upon analyses at the micro level the netherlands has a long history in macro model building a recent discussion among dutch macro economists considered the future of econometric model building at the macro level and considered how best to improve this model building the explicit integration of scale effects however was not mentioned i am convinced that improvements in this respect are possible in particular i have in mind the role which small businesses play in certain areas such as wage structure employment or investments the dissection of macro prognoses into a small business component and a remaining component is a traditional practice in the netherlands 1 finally there is much concern in the netherlands for the calculation of regulatory effects decomposed into effects for small and large businesses if anywhere in the world there is a solid foundation for studying scale effects in both macro and sectoral models it most certainly has been in the netherlands there is a strong tradition of macro econometric model building groups of econometricians specialized in small business research exist dutch policymakers show concern and the required research apparatus is available

the inflationary bias in a model of the open economy a note abstract in this paper we highlight the importance of aggregate supply effects on the size of the inflationary bias under discretionary policy making using a simple model of an open economy that imports a foreign resource input we show that under discretion the inflationary bias bears an inverse relationship to the elasticity of output supplied with respect to the real exchange rate this theoretical finding is consistent with romer 1993 romer d 1993 openness and inflation theory and evidence quarterly journal of economics 108 869 903 empirical results that point to the existence of a negative association between openness and inflation

traded goods competitiveness and aggregate fluctuations in the united kingdom this paper presents an investigation of the relations between wage adjustment competitiveness and aggregate fluctuations in the united kingdom it uses a real business cycle model based on the distinction between internationally traded and nontraded goods the traded goods sector is assumed a price taker and the focus is on the supply side the model can account quite well for fluctuations in competitiveness output wages and the terms of trade the results suggest output flexibility and wage price rigidity a combination that produces interesting patterns of macroeconomic adjustment which parallel the predictions of more traditional keynesian models copyright 1990 by royal economic society

a new theory of retailing costs in cross section studies of shops of the same type we find that costs in general and labour in particular depend on the sales size per shop according to a linear function with a positive intercept this paper provides some empirical evidence and a theoretical explanation based on queuing theory

entry spending and firm size in a stochastic r d race a model is developed to explain participation and spending on rd a flow cost of expenditure for the duration of the race which affects both the profitability of winning and the speed of development the poisson parameter both with diminishing returns allowance for an effect of firm size on the effectiveness profit cost of development the operational decision concerning the level and intensity of commitment in case of participation is modelled in a traditional fashion as the maximization of expected returns the strategic decision whether or not to participate at an optimal level and intensity is modelled as a stochastic process of deliberation between different makers and influencers of decisions in the firm the latter is to be seen as an introduction of the political and resource dependence views of organisations the resulting model of r d participation as a function of firm size is tested empirically on data from an r d survey in the netherlands

the new open economy macroeconomics a survey since the 1995 publication of obsteld and rogoff s redux model there has been an outpouring of research on open economy dynamic general equilibrium models that incorporate imperfect competition and nominal rigidities this paper offers an interim survey of this recent literature 2001 elsevier science b v all rights reserved

excess capacity monopolistic competition and international transmission of monetary disturbances analyzes the excess capacity monopolistic competition and international transmission of monetary policy disturbances in the united states sheds light on the international impact of monetary policy emphasis on the spillover effects of monetary disturbances similarity of framework used with open economy macroeconomics

the rigidity of prices this paper uses evidence on individual transaction prices to analyze price behavior the evidence shows that for many transactions pricesremain rigid for periods exceeding one year the rigidity of price ispositively correlated with industry concentration for several productsthe correlation of price changes across buyers is low the paper alsoinvestigates the relationship between price rigidity price change andthe length of time a buyer and seller have been doing business together the author interprets the evidence as emphasizing the importance of nonprice rationing and the inadequacy of models in whichprice movements alone clear markets copyright 1986 by american economic association

collusive price rigidity under price matching punishments by analysing an infinitely repeated game where unit costs alternate stochastically between low and high states and where firms follow a price matching punishment strategy we demonstrate that the best collusive prices are rigid over time when the two cost levels are sufficiently close this provides game theoretic support for the results of the kinked demand curve in contrast to the kinked demand curve it also generates predictions regarding the level and the determinants of the best collusive price which in turn has implications for the corresponding collusive profits the relationships between such price rigidity and the expected duration of a high cost phase the degree of product differentiation and the number of firms in the market are also investigated

real exchange rates and macroeconomics evidence and theory since the early 1980s a large body of research has thrown doubt on the relevance of macroeconomic models for understanding exchange rates the authors argue that a balanced reading of recent literature in exchange rate economics gives a more optimistic assessment many studies have established the pertinence of long run purchasing power parity ppp and the explanatory power of macroeconomic fundamentals in real exchange rate fluctuations a reasonably strong case can be made for a traditional macroeocnomic interpretation of real exchange rates which emphasizes short run price stickiness but long run ppp but a central new ingredient in this interpretation is the presence of international commodity market segmentation and persistent deviations from the law of one price an example is given of a dynamic general equilibrium model that can reproduce some of the observed features of real exchange rate fluctuations

endogenous price commitment sticky and leadership pricing evidence from the italian petrol market this article studies dynamic pricing strategies in the italian gasoline market before and after the market leader unilaterally announced its commitment to adopt a sticky pricing policy using daily italian firm level prices and weekly average eu prices we show that the effect of the new policy was twofold first it facilitated price alignment and coordination on price changes after the policy change the observed pricing pattern shifted from cost based to sticky leadership pricing second using a dif in dif estimation and a synthetic control group we show that the causal effect of the new policy was to significantly increase prices through sticky leadership pricing our paper highlights the importance of price commitment by a large firm in order to sustain tacit collusion

collusion over the business cycle we present a theory of collusive pricing for markets in which demand alternates stochastically between fast growth boom and slow growth recession phases we show that 1 the most collusive prices are weakly procyclical countercyclical when demand growth rates are positively negatively correlated through time and 2 the amplitude of the collusive pricing cycle is larger when the expected duration of boom phases decreases and when the expected duration of recession phases increases we also offer a generalization of rotemberg and saloner s 1986 model interpreting their findings in terms of transitory demand shocks that occur within broader business cycle phases

small menu costs and large business cycles a macroeconomic model of monopoly i introduction the conflict between modern neoclassical and traditional keynesian theories of the business cycle centers upon the pricing mechanism in neoclassical models prices are fully flexible they represent the continuous optimization of economic agents and the continuous intersection of supply and demand in keynesian models prices are often assumed to be sticky they do not necessarily equilibrate all markets at all times one of the reasons for the resurgence of the equilibrium approach to macroeconomics has been the absence of a theoretical underpinning for this keynesian price stickiness this note shows that sticky prices can be both privately efficient and socially inefficient the business cycle results from the suboptimal adjustment of prices in response to a demand shock to the extent that policy can stabilize aggregate demand it can mitigate the social loss due to this suboptimal adjustment in some keynesian models prices are simply exogenously fixed 2 in others agents must set their prices in advance of the transaction date the act of altering a posted price is certainly costly these costs include such items as printing new catalogs and informing salesmen of the new price yet these menu costs are small and therefore generally perceived as providing only a weak foundation for these fixed price models however this inference is flawed small menu costs can cause large welfare losses the claim that price adjustment costs are small does not rebut the claim that they are central to understanding economic fluctuations

inflation in open economies abstract this paper relates the time consistent inflation rate to the degree of trade openness of an economy the mechanism linking the welfare effects of monetary surprises and hence the incentives to inflate to openness does not rely on a large country terms of trade effect but rather is due to imperfect competition and nominal price rigidity in the non traded sector the empirical evidence supports the main predictions of the model 1997 elsevier science b v

staggered wages and output dynamics under disinflation we study the output costs of a reduction in monetary growth in a dynamic general equilibrium model with staggered wages the money wage is fixed for two periods and is chosen according to intertemporal optimisation agents have labour market monopoly power we show that the introduction of microfoundations helps to resolve the puzzle raised by directly postulated models namely that disinflation in staggered pricing models causes a boom in our model disinflation whether unanticipated or anticipated unambiguously causes a slump

labour productivity and profitability in the dutch flower trade this paper makes an attempt to illustrate the use of econometric models as frame of reference for diagnosing small firm performance for this purpose two models are developed explaining differences in labour productivity and profitability among dutch flower exporters in addition we show how these models can be used for inter firm performance comparisons

the markup and inflation evidence in oecd countries in this paper we evaluate the dynamic inconsistency argument put forth by kydland and prescott 1977 and barro and gordon 1983 as an explanation for differences in the average inflation experience across oecd countries the focus is on the empirical evidence relating the overall degree of competition among firms as measured by the markup of price over marginal cost and inflation over the 1973 88 period the prediction is that higher markups raise the monetary authority s incentive to increase output leading to higher equilibrium rates of inflation we find that the markup does well in explaining cross country differences in average inflation jel classification e31 e58 d43 l ecart du prix par rapport au cout marginal et l inflation resultats pour les pays de l ocde ce memoire examine l argument mis de l avant par kydland et prescott 1977 et barro et gordon 1983 pour expliquer les differences dans le taux moyen d inflation entre les pays de l ocde on porte une attention speciale aux resultats empiriques qui relient le degre general de concurrence entre les entreprises mesure par l ecart du prix par rapport au cout marginal et le niveau d inflation entre 1973 et 1988 la prediction est que des ecarts prix cout marginal plus eleves augmentent l incitation des autorites monetaires a accroitre le niveau de production ce qui entraine des taux d inflation d equilibre plus eleves il s avere que l ecart du prix par rapport au cout marginal tend a expliquer bien les differences dans le niveau moyen d inflation entre pays

trade openness and inflation episodes in the oecd boschen and weise journal of money credit and banking 2003 model the probability of a large upturn in inflation in the oecd an inflation start we extend their work to consider the impact of trade openness on the probability of such an event the main finding is that increased openness reduces the probability of an inflation start both directly and indirectly through restricting the role of general elections in triggering inflation starts

the impact of cyclical demand movements on collusive behavior recent work by rotemberg and saloner 1986 investigates the effect of the business cycle on optimal collusive pricing by specifying that demand is subject to i i d shocks an implication of the i i d assumption is that firms expectations on future demand are unrelated to the current level of demand we put forth a model that allows for both the level of current demand and firms expectations on future demand to change over time thus it captures two important properties of the business cycle our analysis reveals that while the gain to deviating from a collusive agreement is greatest during booms firms find it most difficult to collude during recessions as the forgone profits from inducing a price war are relatively low an implication of this effect for pricing behavior is that at the same level of demand price is lower when demand is declining than when demand is rising consistent with previous theoretical work we find that firms price countercyclically for a range of values for the discount factor however numerical simulations reveal a greater tendency for firms to price countercyclically during recessions than during booms

raw materials world price changes and exchange rates in a small open economy this paper studies the impact of a rise in the world price of imported raw materials oil on the small open economy exchange rate we obtain a depreciation which magnitude depends on the share and substitutability in the productive structure