definition consistent measurement of exchange market pressure currencies can be under severe pressure but in a managed exchange rate regime that is not fully visible via the change in the exchange rate the literature has proposed a way to measure such exchange market pressure emp indirectly by adding interest rate changes and forex interventions to the exchange rate change we demonstrate that this measure is not consistent with the definition of emp and develop a new measure that is consistent this is first derived within the commonly used monetary exchange rate model then we generalize the analysis by avoiding the use of an exchange rate model we find that the interest rate should not be taken in the first difference form used so far but rather in level form and relative to the interest rate chosen if the country had no exchange rate objective applications on the european monetary system and east asian crises confirm that this improvement is highly relevant in practice

an economic theory of self control the concept of self control is incorporated in a theory of individual intertemporal choice by modeling the individual as an organization the individual at a point in time is assumed to be both a farsighted planner and a myopic doer the resulting conflict is seen to be fundamentally similar to the agency conflict between the owners and managers of a firm both individuals and firms use the same techniques to mitigate the problems which the conflicts create this paper stresses the implications of this agency model and discusses as applications the effect of pensions on saving saving and the timing of income flows and individual discount rates

a proposal to end inflation this paper suggests how the price level could be stabilized by the bank of england adopting a rule to peg the price of a new financial instrument this new instrument would be similar but not identical to a price index futures contract the paper explains how the scheme would work assesses potential objections and discusses how the bank of england could enhance the credibility of its commitment to the rule it also compares the scheme with the alternatives of targeting the monetary growth rate or targeting the price level copyright 1994 by royal economic society

exchange rate overshooting the trade balance and rational expectations abstract this paper presents a model of exchange rate determination characterized by imperfect asset substitutability between domestic and foreign bonds sticky goods market prices and rational expectations the model is used to analyze the response of the exchange rate to a step change in relative money supplies the assumption of imperfect asset substitutability permits introduction into the analysis of trade flows which respond to relative price changes these flows create non monotonic exchange rate adjustments to long run equilibrium these non monotonic adjustments are consistent with rationality and may lead to short run undershooting or overshooting

wages relative prices and the choice between fixed and flexible exchange rates this paper reexamines the choice between fixed and flexible exchange rates to take into account wage indexation and flexible prices the difference in output variation in the two exchange rate regimes is shown to be dependent on wage behaviour in the domestic economy being proportional to one minus the degree of wage indexation foreign wage behaviour is also shown to be of key importance since high wage indexation abroad can insulate the domestic country from some foreign disturbances regardless of domestic behaviour while for other economic disturbances it is the relative degree of wage indexation which determines the desirability of flexible rates niveaux de salaires prix relatifs et le choix entre les regimes de taux de change fixes ouflucttuants ce memoire reouvre le dossier du choix entre regime de taux de change fixes et regime de taux de change fluctuants quand on tient compte de l indexation des salaires et de la flexibilite des prix il appert que l ecart entre les variations du niveau de production domestique entre les deux regimes depend du comportement des salaires dans l economie domestique il est proportionnel a 1 le degre d indexation des salaires le comportement des salaires dans le reste du monde est aussi important puisque un haut degre d indexation des salaires dans le reste du monde peut proteger l economie domestique de certaines perturbations economiques h l etranger quel que soit le comportement des salaires domestiques dans le cas d autres perturbations economiques c est le degre relatif d indexation des salaires h l interieur et h l exterieur qui devient le facteur determinant dans le choix d un regime de taux de change how much difference a flexible exchange rate makes to the economic performance of a country depends significantly on wage behaviour if wages are sufficiently sensitive to exchange rates output will exhibit much the same variability under flexible exchange rates as under fixed rates foreign wage behaviour is also of key importance since high wage flexibility abroad can insulate the domestic country from some foreign disturbances regardless of domestic wage behaviour while for other economic disturbances it is the relative degree of wage flexibility which determines the desirability of flexible rates this paper re examines the choice between fixed and flexible rates taking into account both domestic and foreign wage

evaluating the predictability of exchange rates using long horizon regressions mind your p s and q s since the breakdown of the bretton woods agreement researchers have used a wide variety of structural models to try to predict exchange rate movements unfortunately finding consistent evidence that these models outperform a random walk has proven elusive in this paper we investigate the impact different methods of inference may have had on these conclusions using p values based on recently developed tests of forecast accuracy and encompassing as well as q values designed to mitigate multiple testing problems we provide stronger evidence consistent with these models having superior predictive ability our results suggest that previous studies inability to detect predictive ability may have been influenced by the statistics used and the manner in which they were employed

real exchange rate overvaluation and wto dispute initiation in developing countries why and when do developing countries file trade disputes at the world trade organization wto although financial conditions have long been considered an important driver of trade policy they have been largely absent from the literature on trade disputes we argue that developing country governments bring more trade dispute to the wto when overvalued real exchange rates put exporters at a competitive disadvantage this dynamic is most prevalent in countries where large foreign currency debt burdens discourage nominal currency devaluations that would otherwise serve exporters interests our findings provide an explanation for differences in dispute participation rates among developing countries and also suggest a new link between exchange rate regimes and trade policy

the speculative efficiency hypothesis the hypothesis that forward prices are the best unbiased forecast of future spot prices is often presented in the economic and financial analysis of futures markets this paper considers the hypothesis independently of its implications for rational expectations or market efficiency and in order to stress this fact the term speculative efficiency is used to characterize the state envisaged under the hypothesis if a market is subject to efficient speculation the supply of speculative funds is infinitely elastic at the forward price that is equal to the expected future spot price the expected future spot price is a market price determined as the solution to the underlying rational expectations macroeconomic model although the paper is primarily concerned with testing this hypothesis in the foreign exchange market the methodology introduced in the paper is of general application to all futures markets this abstract was borrowed from another version of this item

analytical approximations in models of hysteresis decisions made under ongoing uncertainty and costly reversibility entail a range of the state variable where inaction is optimal which in turn produces hysteresis permanent effects of temporary shifts the range is usually defined by non linear equations that need numerical solutions in this paper a technique of analytical approximations is developed and applied to two models menu costs and investment the resulting explicit solutions help clarify why hysteresis is important even for small irreversibility in the menu cost model hysteresis is two orders of magnitude larger than under the akerlof yellen or mankiw assumptions when decisions that are costly to reverse are made under conditions of ongoing uncertainty the optimum policy usually entails a range of inertia the action should be taken only when the value of the underlying state variable becomes especially favourable and reversed only when it becomes especially unfavourable there is an intermediate range over which inaction is optimal this in turn gives rise to hysteresis starting from a value in the range of inertia if the state variable crosses the action trigger point and then returns to its original level the action will be taken but not reversed thus a temporary change will leave a permanent effect numerical solutions for models of irreversible investment show that the range of inaction is remarkably large even when the cost of reversal is small see brennan and schwartz 1985 constantinides 1986 and dixit 1989a b for examples of this unfortunately the equations tlhat determine the optimum policy are highly non linear they do not have analytical solutions therefore we lack a clearer and more general understanding of why hysteresis is numerically so important in this paper i derive analytical approximations for the solutions of more general problems of this kind when the costs of change are small the idea that small costs of change induce large amounts of inertia has been popularized in the model of akerlof and yellen 1985 mankiw 1985 and others in these models second order small costs of making price changes yield price stickiness in response to first order changes in the money supply this is a simple application of the envelope theorem but these models are static and their application to a dynamic reality must assume either permanent shocks or static expectations when there is ongoing uncertainty which is rationally expected by the decision maker the option value of the status quo enlarges the zone where inaction is optimal adding these features to the mankiw akerlof yellen may model i show that fourth order small costs of change generate first order inertia

international coordination in the design of macroeconomic policy rules abstract the paper examines international issues that arise in the design and evaluation of macroeconomic policy rules it begins with a theoretical investigation of the effects of fiscal and monetary policy in a two country rational expectations model with staggered wage and price setting and with perfect capital mobility the results indicate that with the appropriate choice of policies and with flexible exchange rates demand shocks need not give rise to international externalities or coordination issues price shocks however do create an externality and this is the focus of the empirical part of the paper using a simple seven country model consisting of canada france germany italy japan the united kingdom and the united states optimal cooperative and non cooperative nash policy rules to minimize the variance of output and inflation in each country are calculated the cooperative policies are computed using standard dynamic stochastic programming techniques and the non cooperative policies are computed using an algorithm developed by finn kydland the central result is that the cooperative policy rules for these countries are more accommodative to inflation than the non cooperative policy rules

valuation of power options under heston s stochastic volatility model abstract we derive semi analytic solutions for power option prices under the heston model specifically the pricing formula is shown to be valid whenever the power of the underlying asset price has a finite moment unlike the majority of stochastic volatility models there remains a significant problem to check the existence of moments of assets prices of order higher than one fortunately the moment explosion property under the heston model is examined systematically in andersen and piterbarg 2000 incorporating with their results we present explicit formulas for moment generating function of log price and for power option prices under the circumstances when the corresponding moments are finite in case that the corresponding moment explodes we provide two numerical methods to derive prices of power put and capped power call options in spite of a simple idea numerical examples show that the approximations are extremely accurate and efficient

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

real aspects of exchange rate regime choice with collapsing fixed rates abstract typical evaluations of the choice of exchange rate regime examine the performance of the real economy and assume that the regimes last indefinitely in contrast actual regimes are quite transitory this paper examines how the predictions of two popular models for the determination of some real economic variables must be modified when agents rationally perceive that a fixed rate regime will be transitory the models studied are simple stochastic versions of the models in dornbusch 1976 and flood and marion 1982

the degree of capital mobility and the stability of an open economy under rational expectations recent stochastic models of the open economy have tended to downplay the role of the trade account in short run exchange rate demination focusing instead on the stock equilibrating function of exchange rates and interest rates l the reason for this is that such models are specified in terms of discrete time and virtually all assume i perfect capital mobility in the sense that domestic and foreign assets are perfect substitutes on an uncovered basis ii no wealth effects in the relevant demand functions under these assumptions the exchange rate is essentially determined within the money market however as soon as either assumption is dropped the current account balance together with the appropriate asset market s assumes an important role in determining the exchange rate and domestic interest rate along with the accumulation of foreign securities by the domestic economy during the period 2

in search of the exchange risk premium a six currency test assuming mean variance optimization abstract a number of authors examining deviations of actual rates of currency depreciation from forward discounts have claimed to find evidence of risk premiums if these deviations are indeed partly due to risk premiums rather than being entirely due to expectational errors then they should be systematically related to those variables on which risk premiums are thought to depend finance theory tells us that if investors optimize with respect to mean and variance the risk premium depends in a specific way on 1 the supplies of assets denominated in the various currencies 2 the variance covariance matrix of the rates of return and 3 the coefficient of risk aversion the null hypothesis of this paper is that the coefficient of risk aversion is zero countries assets are perfect substitutes and risk premiums are nonexistent the alternative hypothesis is that rates of return are systematically related to asset supplies by a macroeconomic portfolio balance function the maximum likelihood technique used dominates previous attempts to find such a relationship in that the parameters of the portfolio balance function are constrained to depend on the variance covariance matrix as the finance theory says they should on the other hand the technique also dominates previous applications of the finance theory in that the expected returns are allowed to vary over time as the macroeconomic portfolio balance theory says they should the paper s finding is a statistical inability to reject the null hypothesis for a portfolio of six currencies although this could be due to low power in the test

the handbook of international macroeconomics preface 1 introduction rick van der ploeg amsterdam 2 quantity constrained models of open economies neil rankin warwick 3 imperfect competition and open economy macroeconomics huw d dixon york 4 relative price movements in dynamic general equilibrium models of international trade david backus nyu patrick kehoe pennsylvania and finn kydland carnegie mellon 5 international fiscal policy coordination and competition assaf razin and efraim sadka tel aviv 6 capital taxation in the world economy a lans bovenberg tilburg 7 history of the international monetary system implications for research in international macroeconomics and finance barry eichengreen berkeley 8 on inflation unemployment and the optimal exchange rate regime george alogoskoufis athens 9 macroeconomic policy speculative attacks and balance of payments crisis pierre richard agenor and robert p flood imf 10 continuous time models of exchange rates and intervention giuseppe bertola princeton 11 stylized facts of nominal exchange rate returns casper g de vries leuven 12 partial versus general equilibrium models of international capital market equilibrium 13 sovereign debt kenneth kletzer santa cruz 14 growth and external debt daniel cohen cepremap 15 growth and deficits in an interdependent world index

false discoveries in volatility timing of mutual funds abstract this paper examines the volatility timing of us mutual funds by controlling the false discovery rate to find out how many funds are truly countercyclical procyclical timing funds empirical results show that given the whole universe of our sample funds the percentages of countercyclical and procyclical volatility timing funds are about equal we also find that while the standard approach which simply counts the number of significant positive negative timing coefficients does not incorporate false discoveries in volatility timing it provides quite accurate volatility timing results finally we find that the performance measures for an equally weighted portfolio of procyclical timing funds are greater than for an equally weighted portfolio of countercyclical timing funds in the in sample test consistent with our expectation that procyclical timers earn higher returns because they take on more risk however the countercyclical timing portfolio outperforms the procyclical timing portfolio in the out of sample test

effects of monetary disturbances on exchange rates with risk averse speculation abstract this paper develops a macroeconomic model in which domestic and foreign bonds are perfect substitutes on a covered basis but in which speculators are assumed to be risk averse we analyze the effects of various transitory and permanent disturbances on the economy and show how the existence of the risk premium known to exist under such conditions has important implications for macroeconomic behavior most of our attention is devoted to how the economy responds to temporary and permanent changes in the money and bond supplies and in the central bank s forward market position the effects of disturbances in the foreign price level and interest rate are also briefly discussed

forward rate target zones and exchange rate dynamics abstract a target zone for the forward exchange rate is developed using a log linear monetary model exchange rates are driven by a wiener process a central bank purchases or sells foreign exchange forward to keep the target forward rate in a specified band defending such a target zone does not require regulated wiener process for the central bank s forward exchange intervention can avoid disturbing the money supply a forward rate target zone can stabilize the spot rate against a free float and its stabilizing effects become more significant if the delivery term applying to the target forward rate is shorter

domestic and foreign disturbances in an optimizing model of exchange rate determination abstract this paper analyzes the effects of various disturbances of domestic and foreign origin in a small open economy under imperfect capital mobility in which the behavioral relationships are divided from optimization by the private sector in this model the domestic economy jumps instantaneously to its new equilibrium following a change in either the domestic monetary growth rate or domestic fiscal policy in response to a disturbance in either the foreign interest rate or inflation rate the economy undergoes an initial partial jump towards its new equilibrium which it thereafter approaches gradually the implications of these results for exchange rate adjustments and the insulation properties of flexible exchange rates are discussed

rational addiction with learning and regret we present a theory of rational behavior in which individuals maximize a set of stable preferences over goods with unknown addictive power the theory is based on three fundamental postulates that consumption of the addictive good is not equally harmful to all that individuals possess subjective beliefs concerning this harm and that beliefs are optimally undated with information gained through consumption although individual actions are optimal and dynamically consistent addicts regret their past consumption decisions and regret their initial assessment of the potential harm of the good addict prone individuals who believe it could not happen to them are most likely to be drawn into a harmful addiction

money bonds and foreign exchange in the theory of finance capital markets provide securities which allow the ownership of productive assets to be allocated among investors according to their willingness to bear risk in exchange for return and independently of their tastes for the productive services provided by the assets this paper uses the theory of finance to study the role of money as a productive asset and the transformation of money into a portfolio asset true to its purpose the capital market provides securities nominal bonds that allow an allocation of the current services of the money supply according to its current productivity and without regard for its future purchasing power risk and an allocation of the future purchasing power risk of the money supply according to the willingness of investors to bear this risk in exchange for return and without regard for investor needs for the future transactions services of money in open

exchange rate dynamics in a multilateral target zone this paper presents a model of exchange rate behaviour in a multilateral target zone the model produces new economic insights beyond the well known bilateral model of krugman 1991 which is obtained as a special case the paper also introduces a new class of stochastic processes in economics namely multidimensional reflected diffusion processes two main features characterize the economics of exchange rates in a multilateral target zone i the restrictions on interventions imposed by cross currency constraints when one country changes its money supply say because its exchange rate with a second country has hit its band all exchange rates involving the currency of that particular country will be affected regardless of their position within their respective bands ii cooperation in sharing the intervention burden in general the exchange rate between any two countries will depend on the fundamentals of third countries in a multilateral target zone this is because if the monetary authorities intervene together a shock in the fundamentals of any country will induce a revision of the expectation of future interventions of other countries the model reverts the counterfactual predictions of the bilateral model that the exchange rate steady state density should be u shaped and that its volatility should be a decreasing function of the distance of the exchange rate to the limits of its band thus accounting for the multilateral feature of real world target zones allows us to reconcile target zone models with the most salient empirical features of exchange rate behaviour

optimal target zones how an exchange rate mechanism can improve upon discretion abstract using krugman s 1991 target zone model we find an explicit subgame perfect solution for a central bank wishing to stabilise the exchange rate given proportional costs of intervention we demonstrate however that precommitment to narrower bands would yield a welfare gain which provides a theoretical rationale for an exchange rate mechanism erm numerical simulations suggest that the optimal currency band with precommitment via an erm is only half as wide as that under discretion and that the welfare benefits are sufficient to sustain the system

the choice of an exchange rate system and macroeconomic stability the recent theoretical literature regarding the choice of an exchange rate system has focused on how the choice of an exchange rate regime will affect the stability of the economy while the methodology and emphasis of the various theoretical arguments differ the common thread that runs through all is the notion that the appropriate exchange rate system will differ with the nature of the disturbance to the economy the substantive differences existing among the various studies are to a certain extent due to different criteria used for exchange system choice it is not surprising that one s beliefs with regard to the effect of exogenous shocks on exchange system choice will be sensitive to the objective function used for instance fischer 1977 and frenkel and aizenman 1982 focus on the minimization of real consumption shocks and derive the result that the greater the domestic money shocks the more likely is a float alternatively flood 1979 and aizenman 1983 with an objective of minimizing domestic price shocks conclude that the greater the domestic money shocks the more preferred is a fixed exchange rate while the evidence presented below will indicate which approach is more consistent with actual country practice we should first consider the rationale behind the criteria considered fischer appeals to basic micro theory when he says that concavity of utility functions expressed as a function of consumption justifies concern with the stability of consumption but it is not obvious that price stability is of itself undesirable

aspects of the optimal management of exchange rates abstract this paper shows that the choice of the optimal exchange rate regime depends on the stochastic shocks affecting the economy the higher the variance of real shocks the larger the desirability of fixity of exchange rates the desirability of exchange rate flexibility increases the larger are the variances of the shocks to the demand for money to the supply of money to foreign prices and to purchasing power parities when the economy produces traded and non traded goods the desirability of exchange rate flexibility diminishes the higher is the relative share of non traded goods and the lower are the elasticities of demand and supply of the two goods

exchange rate bands with price inertia this problem by committing member states to taking suitable action to prevent cross parities from straying outside some given publicly announced range and williamson s proposal for target zones was explicitly aimed at preventing exchange rate misalignment among the principal industrial countries subsequently the louvre accord struck between members of the group of seven in i 987 involved unpublished commitments designed to constrain fluctuation between the u s dollar and the currencies of its major trading partners funabashi i988 given the obvious practical importance of understanding the implications of such policy commitments for the economy in general and the exchange rate in particular it is perhaps not surprising that the seminal work by krugman i 988 i989 on exchange rate determination within a band has aroused considerable interest under the assumption that the velocity of money follows a brownian motion process he obtains an explicit solution for the exchange rate as a function of the fundamental which shows that the presence of a commitment to intervene so as to defend the band exerts a stabilising influence on the exchange rate even before any such intervention takes place in their contribution to this emerging literature froot and obstfeld i989 note that krugman s minimalist stochastic specification can be derived from a monetary model of exchange rates where prices are perfectly flexible and full employment prevails where international interest differentials match expected exchange rate changes and the exchange rate preserves purchasing power parity cf mussa 1976 and they show that the behaviour of the rate inside a currency band can be obtained using results on regulated brownian motion processes cf harrison i985 using the same framework and techniques flood and garber i989 indicate how the rate will respond to noninfinitesimal intervention and svensson i 989 examines the effect of bandwidth on the stochastic behaviour of interest rates klein i989 considers the effects of uncertainty about the width of the band

rational expectations endogenous currency substitution and exchange rate determination the paper employs the intergenerational model to derive the demands for domestic and foreign currencies from microeconomic optimizing behavior in the absence of government policy we obtain the kareken and wallace result that exchange rates are constant and indeterminate we discuss the reasons why nations may find it in their interests to impose probabilistic capital controls it is shown that the imposition of probabilistic capital controls yields a unique generally nonstationary exchange rate path and that this path is determined in accord with the monetary approach as the probability of controls tends to zero the exchange rate remains determinate

forward exchange rates in general equilibrium abstract this paper develops a two country overlapping generations model of an economy with a forward market in foreign exchange the equilibrium forward rate exhibits the conventional decomposition into the expected future spot rate a convexity term and a risk premium unlike partial equilibrium models however the model expresses these terms as functions of the primitive structural parameters of the economy it thus provides insights into the structure of the premium which may facilitate interpretation of empirical studies of the forward markets in particular it suggests that time varying risk premia may arise from changes in the distribution of wealth between countries over time

intervention strategies and exchange rate volatility a noise trading perspective abstract this paper estimates and explains the impacts of sterilized us intervention on exchange rate volatility i find that intervention reduced both yen dollar and dm dollar exchange rate volatilities during 1985 1986 but increased them during 1987 1989 these results are explained in a noise trading framework where the effectiveness of sterilized intervention may depend critically on the design and implementation of intervention strategies jel f31 1997 elsevier science ltd

currency fluctuations in the post bretton woods era the international monetary landscape that has emerged since the felling of bretton woods is characterized by a hybrid exchange rate system that lies somewhere between the textbook polar cases of a gold standard and a pure float this system has relatively flexible exchange rates between major countries active central bank intervention in the market for the major currencies and predominantly fixed exchange rates relative to the dollar or to some basket of currencies for less developed countries and newly industrializing nations the majority of research on currency markets since the early 1970s has focused on the characteristics of flexible exchange rates under this hybrid regime my thesis is that this research has been unsuccessful the proportion of monthly or quarterly exchange rate changes that current models can explain is essentially zero even after the fact forecasts that use actual values instead of forecasted values of the explanatory variables cannot explain major currency movements over the post bretton woods era this result is quite surprising since exchange rate changes would be entirely unpredictable only in very special cases of the theoretical models discussed as the discussion below will argue it is not a general implication of market efficiency that exchange rates follow a random walk process 1

exchange risk political risk and macroeconomic equilibrium with the advent of increased exchange rate flexibility the role of policy and the transmission of economic disturbances under flexible rates have become topics of considerable interest j marcus fleming 1962 and robert mundell 1963 in their early analysis of the theory of policy in open economies emphasized the importance of the degree of capital mobility subsequently a number of authors have analyzed the implication of the degree of capital mobility for exchange rate and income determination in open economies see for example pentti kouri and michael porter 1974 william branson 1975 1979 lance girton and dale henderson 1976 and turnovsky 1976 the polar case of perfect capital mobility has received most attention capital is perfectly mobile when investors consider domestic bonds denominated in domestic currency and foreign bonds denominated in foreign currency to be perfect substitutes two factors may cause perfect substitutability to break down one is exchange risk the values of the two bonds are defined in terms of different currencies and the exchange rate at the date of maturation is uncertain the second is default risk investors may perceive that foreign bonds are more subject to the risk of default than are domestic bonds for one thing in the event of default the investor must pursue his claim through a foreign legal system which is likely to be costly robert aliber 1973 terms differences in default risk arising from the foreignness of assets as political risk where domestic and foreign securities are assumed to be only imperfect substitutes it is important to distinguish the degree of imperfection due to each of these sources of risk while this distinction has been noted in optimal portfolio models developed by authors such as kouri 1976 and michael alder and bernard dumas 1977 it has not been brought out in the current macro literature the objective of the present paper is to investigate the macroeconomic consequences of this distinction and to show how it may be crucial in assessing the effects of various macroeconomic disturbances under varying degrees of capital mobility we find that well known results about the effects of increased capital mobility on the efficacy of monetary policy are correct when the increased mobility is due to a reduction in exchange risk but not necessarily so when it is due to a reduction in default risk section i formulates a general equilibrium macroeconomic model which embodies the distinction between these two sources of risk we assume that the economy is small so that it treats certain characteristics of the foreign economy as parametric section ii carries out certain comparative static exercises with this model specifically it considers some important relationships between the available policy instruments and endogenous variables and shows how these are affected by the degree of capital mobility in the two senses in which this term is defined in particular we show that as long as there is a possibility of default there exists an independent role for forward market intervention in the limiting case of no default risk yale university and university of illinois respectively see peter kenen 1965 for an early analysis of the forward market incorporating potential default political risk may derive from the threat of exchange controls as well as from the threat of outright debt repudiation in either case the risk may not be the loss of the total net worth of the investment when the threat derives from exchange controls the expected value of net worth may even be preserved but if payment is delayed forward cover obtained for the investment will no longer be appropriate for our purposes it is the risk that repayment not occur on the date for which the forward cover is arranged thereby exposing the investor to exchange risk that is relevant our analysis could easily be modified to incorporate a preservation of some or all net worth in the event of default see eaton and mark gersovitz 1981 for a model in which the probability of default is endogenous

a re assessment of the relationship between real exchange rates and real interest rates 1974 1990 abstract this paper uses cointegration techniques and error correction models to re examine the link between real exchange rates and real interest rate differentials the results show that real exchange rates and real interest rates are nonstationary however they are not cointegrated with each other on the other hand the dynamic models indicate that there might be a long run relationship between these variables but this cannot be verified the final conclusion is that there is little empirical evidence in support of a systematic relationship and this result is robust across exchange rates time periods and measures of expected inflation

foreign exchange market intervention in two small open economies the canadian and australian experience abstract we examine intervention by the bank of canada and the reserve bank of australia for daily data from 1989 to 1998 both central banks intervene in response to excessive exchange rate volatility and uncertainty volatility is the implied volatility of foreign currency futures options uncertainty is the kurtosis of the implied risk neutral probability density functions we also examine the impact of inflation targets unlike other studies we also consider commodity futures prices these turn out to help explain the effectiveness of intervention central bank intervention was largely unsuccessful in both countries though volatility and kurtosis were modestly affected

comparing the intensity of exchange market intervention with frenkel and aizenman s index of managed float abstract the large literature on the optimum intensity of foreign exchange market intervention contains two different characterizations of the central bank s policy choice variable most of the literature focuses on the central bank s intensity of intervention in the foreign exchange market and its implications for the domestic money supply an important contribution by frenkel and aizenman 1982 however carries out its analysis in terms of a so called index of managed float this note clarifies the relation between these policy measures by deriving the frenkel aizenman index from a standard specification of financial market equilibrium

seigniorage and the case for national money in countries with high rates of inflation there is typically movement away from the use of the local currency the paper analyzes the costs and benefits of using a local currency with emphasis on the seigniorage foregone by using a foreign money even if it should be desirable for a country to fix its exchange rate it still loses seigniorage if it does not use its own money the case for using a foreign money then turns largely on the superior discipline imposed on domestic policymakers by removing their control over the money supply alternative methods of imposing discipline are discussed estimates of the amount of seigniorage raised by different governments are presented seigniorage amounts in some cases to about 10 percent of government revenue estimates are also presented of both the annual flow and one time stock costs of giving up use of domestic currencies and instead using the dollar the flow cost is typically about 1 percent of gnp and the stock cost is around 10 percent of gnp

time consistency and the feasibility of alternative exchange rate regimes abstract in a stochastic cash in advance model of an open economy a fixed exchange rate regime is dynamically inconsistent and hence economically infeasible in a cournot nash equilibrium if there are no exogenous constraints imposed on government behaviour and nominal interest rates are strictly positive on the other hand a perfectly floating exchange rate regime is feasible but it cannot sustain any international asset trade however a noncooperative equilibrium with nonzero asset trade and a fixed exchange rate regime may become feasible when we allow policymakers to employ trigger retaliation strategies

the effect of excessively elastic expectations on exchange rate volatility in the dornbusch overshooting model abstract bilson has described the empirical finding that the forward exchange rate overestimates the speed of return to equilibrium as a finding of excessive speculation and has drawn implications for the volatility of the exchange rate the present paper pursues this tack within the sticky price monetary model made famous by dornbusch it is shown theoretically that if the market overestimates the speed of adjustment the degree of overshooting is reduced in this sense excessive speculation leads to reduced volatility

a theory of rational addiction we develop a theory of rational addiction in which rationality means a consistent plan to maximize utility over time strong addiction to a good requires a big effect of past consumption of the good on current consumption such powerful complementarities cause some steady states to be unstable they are an important part of our analysis because even small deviations from the consumption at an unstable steady state can lead to large cumulative rises over time in addictive consumption or to rapid falls in consumption to abstention our theory also implies that cold turkey is used to end strong addictions that addicts often go on binges that addicts respond more to permanent than to temporary changes in prices of addictive goods and that anxiety and tensions can precipitate an addiction

exchange rate determination and asset prices in a stochastic small open economy abstract this paper constructs a stochastic general equilibrium model of a small open economy consisting of risk averse optimizing agents the stochastic processes describing the rate of monetary growth government expenditure private production and the foreign price level are taken to be exogenous determining all asset risks and returns and the equilibrium stochastic process describing the domestic inflation rate and the exchange rate the model is used to examine the effects of the means and variances of policy shocks on the equilibrium and the determinants of the foreign exchange risk premium

liability dollarization exchange market pressure and fear of floating empirical evidence for turkey the objective of this article is to examine the relationship between liability dollarization and the exchange market pressure emp in turkey within an autoregressive distributed lag ardl and granger causality framework using monthly data from 1991 12 to 2006 08 the findings suggest that there exists a long term equilibrium relationship between emp and liability dollarization where liability dollarization granger causes emp both in the short and long run with no evidence of reverse causality this suggests that the predominance of foreign currency liabilities in the banks balance sheets in turkey induces a selling pressure in the exchange market as well as a fear of floating

on the indeterminacy of equilibrium exchange rates in this paper we consider a particular international economic policy regime the laissez faire regime the distinguishing features of which are unrestricted portfolio choice and floating exchange rates and as we show this regime although favored by many economists is not economically feasible it does not have a determinate equilibrium that is an implication of an overlapping generations model more basically it is an implication of the notion that money is wanted only in order to accomplish trades

the use of the balance of payments as a shock absorber in fixed rate and managed float systems abstract this paper analyzes the use of the balance of payments as a shock absorber in fixed and managed exchange rate regimes the analysis is conducted in a monetary intergenerational model it shows that the balance of payments can be used to smooth consumption and raise the welfare of individuals the paper also justifies the stabilization of consumption as a policy goal achieved through the balance of payments mechanism

procrastination and obedience in this lecture i shall focus on situations involving repeated decisions with time inconsistent behavior although each choice may be close to maximizing and therefore result in only small losses the cumulative effect of a series of repeated errors may be quite large thus in my examples decision makers are quite close to the intelligent well informed individuals usually assumed in economic analysis but cumulatively they make seriously wrong decisions that do not occur in standard textbook economics this lecture discusses and illustrates several pathological modes of individual and group behavior procrastination in decision making undue obedience to authority membership of seemingly normal individuals in deviant cult groups and escalation of commitment to courses of action that are clearly unwise in each case individuals choose a series of current actions without fully appreciating how those actions will affect future perceptions and behavior the standard assumption of rational forwardlooking utility maximizing is violated the nonindependence of errors in decision making in the series of decisions can be explained with the concept from cognitive psychology of undue salience or vividness for example present benefits and costs may have undue salience relative to future costs

exchange rate intervention with options abstract we consider the problem of a central bank that has exchange rate goals in a partial equilibrium setting we compare direct intervention through sale purchase of reserves in the currency market with an alternative strategy of intervention with options the investment bank the central bank deals with will have to hedge its position and therefore buy or sell the underlying security the foreign currency and bonds intervention through options seems to perform better but the value of the cross elasticity exchange rate interest rate is crucial we provide some grounds for the construction of a full equilibrium model

the advantage to hiding one s hand speculation and central bank intervention in the foreign exchange market abstract we analyze an asymmetric information model of sterilized intervention in the foreign exchange market we characterize an equilibrium in which a central bank with inside information about its exchange rate target trades with risk averse speculators who have private information about future spot rates the model identifies circumstances in which perverse responses to intervention will be observed i e the domestic currency depreciates when the central bank purchases it and it provides conditions under which the exchange rate will be highly sensitive to intervention the model also provides an explanation for two forms of policy secrecy i secrecy about the scale of an intervention operation is always desirable ii secrecy about the target is sometimes desirable

world trade patterns economic disturbances and exchange rate management abstract this paper construct and analyzes a three country stochastic model of world trade the objectives of this paper are to investigate the propagation of economic disturbances worldwide and to analyze the nature of optimal exchange rate management on the part of a single country faced with monetary and real disturbances accurring in all its trade patterns the paper analyzes the roles of bilateral trade patterns the type of underlying stochastic disturbances i e monetary vs real and transsitory vs permanent and of the optimality criterion in determining the optimal exchange rate regime

spot and forward rates in a stochastic model of the foreign exchange market abstract in this paper we develop a simultaneous stochastic model of spot and forward exchange rate determination under rational expectations for spot rates we find that increases in speculative responsiveness dampen the effects of trade balance shocks but exacerbate effects of interest rate shocks for forward rates though increases in speculative responsiveness dampen the effects of both trade balance and interest rate shocks the bias of the forward forecast error decreases as specualtive responsiveness increases but the expected squared error may increase

the forward exchange market speculation and exchange market intervention this paper examines two issues the first is the role of speculation in stabilizing the economy against stochastic disturbances increased speculation i stabilizes domestic income against disturbances in the domestic bond market and forward exchange market ii exacerbates the effect of foreign disturbances and iii may dampen or augment the effect of money market and output supply disturbances the second issue is the role of the forward market in stabilization policy forward market intervention does not provide monetary authorities additional leverage in stabilizing income beyond unsterilized spot market intervention intervention rules based on reactions to both the forward and the spot exchange rates however can outperform intervention policies responding to the spot rate alone regardless of the market in which intervention occurs

measuring the degree of exchange market intervention in a small open economy abstract in this article i introduce an index of intervention activity which can be calculated on the basis of observed data this intervention index measures intervention activity as the proportion of exchange market pressure relieved by exchange market intervention the properties of the intervention index are established analytically using a model of a small open economy with rational expectations the index is used to calculate measures of bilateral and multilateral intervention for canada over the period 1975 1990

optimal government finance policy and exchange rate management in a stochastically growing open economy abstract optimal monetary policy is analyzed in a stochastic small open economy consisting of risk averse representative agents the analysis shows how optimal monetary policy should be directed toward an optimal interest rate target this target which maximizes the intertemporal utility of the representative agent is determined by balancing off the marginal gains of a higher interest rate on increased growth and the future consumption it generates against the marginal losses stemming from a reduction in the holdings of real money balances the paper shows how an appropriately set monetary growth rate eliminates the need for continuous intervention in the exchange market

currency substitution and instability in the world dollar standard comment myron ross correctly points out in his comment that u s price inflation is better predicted by the american money supply mlus than by the broader ten country world money supply mlw over the whole statistical time series from 1960 to 1980 provided in mckinnon s 1982 article specifically he showed that american price inflation is more highly correlated with mlus lagged one or two years than with mlw similarly lagged however mckinnon s present tense assertion that in general growth in the world money supply is a better predictor of american price inflation than is american money growth applies only to the weak dollar standard of the 1970 s and early 1980 s as his preceding discussion intended but failed to indicate clearly only in this later period of volatile exchange rates and price level instability in the united states do alternative hard currencies such as the yen and deutsche mark become competitive as international stores of value and units of account hence international currency substitution associated with the ebb and flow of speculation against or for the dollar significantly destabilized the demand for mlus in the 1970 s and 1980 s and only in this later period might one expect the sum of these internationally substitutable monies ml to predict world and perhaps even american price inflation better than does mlus in contrast during the strong dollar standard of the 1950 s and 1960 s the dollar was unchallenged as international money exchange rates were by and large convincingly fixed speculation for or against the dollar was incapable of substantially altering u s interest rates or of directly affecting the demand for mlus because cyclical international influences did not then destabilize the demand for dollars mlus was by itself a fairly efficient predictor of american prices thus ross s statistical results for the period 1960 to 1980 show somewhat greater predictive strength in mlus compared to ml because the 1960 s data outweigh the dissimilar data of the 1970 s let us instead partition the sample of imf data around the year 1970 whence began the transition from fixed to fluctuating exchange rates and the maturation of alternative monetary systems in europe and japan after applying similar statistical correlation procedures to those used by ross we show a striking structural shift in the world s monetary system the explanatory power of mlw increases sharply as that of mlus declines moderately tan 1982 for the early period of 1960 to 1970 table 1 shows simple correlation coefficients between annual percentage changes in money supplies and changes in american and world wholesale price indices the mlus provides a good explanation of u s prices and of world prices one to two years hence whereas the broader definition of mlw in which mlus enters with a 50 percent weight does surprisingly poorly being insignificantly correlated with american or world prices apparently money growth in industrial countries other than the united states was not then an independent source of worldwide inflationary pressure during the strong dollar standard table 2 shows the same simple correlations between percentage changes in prices and money for the weak dollar standard of stanford university please note that a typographical error giving the last word in the original title as market appeared on the cover of the june 1982 issue of this review the title was correct in the table of contents and on the article

target zones and realignments recent contributions emphasize that the presence of exchange rate target zones has important effects on the within band behavior of exchange rates when agents are forward looking the authors find that the implications of available models are inconsistent with european exchange rate data and they suggest that the frequent realignments occurring in the period they consider may be responsible for this they construct a model in which the likelihood of a realignment in the near future increases as the exchange rate approaches the limits of its fluctuation band and show that its implications are broadly consistent with the evidence copyright 1992 by american economic association

life cycle consumption of a harmful and addictive good david goldbaum this article demonstrates that the endogenous desire to quit smoking can result from a rational consumption path chosen at the time the consumer begins smoking this result is obtained without relying on hidden costs or unknown preferences a finite lived agent chooses a path of consumption of a harmful and addictive good to maximize present discounted utility the consumer chooses his consumption rate to account for the future health consequence of smoking and the withdrawal costs of quitting a consumer may choose to smoke even if it means a lowered utility level for the majority of the time spent smoking jel d91 c61 i12 i introduction some of what we consume for pleasure can be harmful economists assume that consumers take measure of the potential harm and balance it against the pleasure derived from consumption when both the pleasure and the harm occur at the time of consumption the decision is straightforward some goods though impose a cost borne at some future date requiring intertemporal planning these present a greater challenge to the consumer and to the economist trying to explain the consumer s behavior at times observed behavior implores us to question whether the consumer is properly weighing the costs and benefits in a manner that maximizes his or her utility theoretically for each item under consideration the rational consumer properly balances the lifetime benefits derived from the consumption against the lifetime costs some observed behavior seems to contradict this rational approach to consumption in particular it is common for people to begin smoking cigarettes during their youth only to endogenously make a decision to quit at a future date to integrate this behavior with rationality modelers have proposed hidden costs multiple selves changing preferences or other strategies that limit the decision making ability of the youth in all of these cases for some consumers the decision to smoke is a mistake made during youth that has to be reversed at some cost as a middle aged adult this article aims to demonstrate that a lifetime path of consumption in which a person consumes a harmful and addictive good while young and quits at some later date is a path that is perfectly consistent with rational behavior it is not necessary to assume that mid life quitters are displaying irrational or time inconsistent behavior if all information regarding a good s harmful properties is revealed some consumers will still choose a path that requires quitting mid life this paper primarily examines the consumption of cigarettes but also includes analysis of a nonaddictive unhealthy good both of these harmful goods provide the consumer with immediate pleasure but at the cost of decreasing life expectancy background becker and murphy 1988 bm introduced the concept of rational addiction the idea that addicts are forward looking rational consumers present consumption choices reflect not only current utility considerations and budget constraints but also incorporate the anticipated impact of present consumption on future utility and budget constraints bm examine the behavior response of addicts to exogenous shocks changes from a steady state including the desire to quit originate only from exogenous shocks such as a change in the relative price of the good or a revelation about the detrimental health consequences of the addictive good that alters the consumer s utility derived from consumption the model offers no mechanism by which smokers may choose to alter behavior endogenously in contrast to bm s smokers many of today s smokers appear to quit in absence of an external shock anyone who began smoking after 1966 has been subjected to the legislated health warnings appearing on cigarette packages since that time 1 antismoking messages in radio and television advertisements during the 1950s and 1960s also helped to make the health consequences of smoking common knowledge

mutual fund volatility timing and management fees this paper shows that compensation incentives partly drive fund managers market volatility timing strategies larger incentive management fees lead to less counter cyclical or more pro cyclical volatility timing but fund styles or aggregate fund flows could also account for this relation therefore we control for them and find that the relation between fees and volatility timing still holds results show that less aggressive fund styles are associated with pro cyclical volatility timing and that volatility timing and flow timing are negatively related we also find that pro cyclical timing mostly improves funds average excess returns sharpe ratios and alphas

estimating the degree of interventionist policies in the run up to emu based on a theoretical monetary exchange rate model in continuous time this article establishes a sequential estimation framework which is capable of indicating central bank intervention in the run up to a currency union using daily pre european monetary union pre emu exchange rate data for the countries of the current euro zone we find mixed evidence of active pre emu intervention policies so called institutional frontloading strategies our estimation framework is highly relevant to economic and political agents operating in financial markets of the upcoming emu accession countries

a re examination of the monetary model of exchange market pressure canada 1963 1988 in re evaluating the performance of the girton and roper 1977 two country monetary model of exchange market pressure emp for canada estimates are provided for an extended specification that allows for unrestricted dynamics results show the hypothesized negative effect of domestic credit growth on emp to be supported throughout the relevance both of the dynamics and of the hypothesized unitary tradeoff between exchange rate and international reserve movements for bank of canada policy is demonstrated for the sequence of fixed and floating exchange rate regimes contained in the 1963 1 1988 1 sample

monetary and real shocks and the optimal target zone abstract an exchange rate target zone is analysed in a model where the economy is disturbed by shocks to money demand and goods demand the stabilising properties of a target zone are compared to those of fixed and flexible exchange rate regimes it is found that a target zone offers a compromise between these two extremes it is also shown that when there are shocks to both money and goods demand a target zone is better than either a fixed rate or a floating rate in the sense that it minimises the variance of output and prices

the pricing of call and put options on foreign exchange this paper derives pricing equations for european puts and calls on foreign exchange the call and put pricing formulas are unlike the black scholes equations for stock options in that there are two relevant interest rates interest rates are stochastic and boundary constraints differ in addition it is shown that both american call and put options have values larger than their european counterparts

monetary policy and foreign price disturbances under flexible exchange rates a stochastic approach the analysis of monetary policy under flexible exchange rates has received extensive treatment during recent years particular attention has been devoted to the role of exchange rate expectations with a general conclusion being that many of the propositions of the traditional static flemingmundell model see fleming 8 and mundell 19 require substantial modification once such expectations are taken into account see 5 21 24 with few exceptions the analysis has been carried out in a deterministic framework the usual assumption made is that any monetary expansion that is introduced is initially ex ante unanticipated but having taken place it is then ex post expected to be permanent this assumption underlies for example the recent contribution by dornbusch 5 and much of the subsequent work that stems from it l this assumption while very natural is also a polar one in practice agents in the economy may attempt to anticipate monetary policy and the policies themselves

does foreign exchange intervention matter the portfolio effect until recently there was an unusual degree of consensus among economists that intervention by central banks in the foreign exchange market did not offer an effective or lasting instrument for affecting the exchange rate at least not independently of monetary policy this consensus was largely shared among policymakers and participants in the financial markets as well the 1982 g 7 economic summit at versailles commissioned a study of intervention known as the jurgenson report which found that the effects were small and transitory at most we think that the time is ripe for new statistical testing of the question many policymakers and foreign exchange traders believe that the intervention operations that have taken place since the plaza agreement of september 1985 have had an effect especially when operations are coordinated moreover the theoretical case against the effectiveness of intervention is not as clear as a reading of the economics literature might suggest the academic literature is predicated on the distinction between intervention operations that are sterilized and those that are allowed to affect the money supply we study the intervention operations that actually took place between 1982 and 1988 regardless of whether they were sterilized however we do begin in section i with a review of the issues involved 2 there are two possible channels through which intervention whether sterilized or not can influence the foreign exchange rate the portfolio and the expectations channels intervention can even if sterilized influence exchange rates through the portfolio channel provided foreign and domestic bonds are considered imperfect substitutes in investors portfolios intervention operations that for example increase the current relative supply of mark to dollar assets which private investors are obliged to accept into their portfolios will force a decrease in the relative price of mark assets 3 intervention can also influence exchange rates regardless of whether foreign and domestic bonds are imperfect substitutes through the expectations channel the public information that central banks are intervening in support of a currency or are planning to intervene in the future may under certain conditions cause speculators to expect an increase in the price of that currency in the future speculators react to this information by buying the currency today bringing about the change in the exchange rate today in sections ii and iii we describe the econometric problems that arise in the standard portfolio balance estimation equation we derive an alternative portfolio balance dominguez kennedy school of government harvard university 79 j f kennedy street cambridge ma 02138 frankel department of economics university of california 787 evans hall berkeley ca 94720 we thank three anonymous referees for valuable comments and suggestions julia marsh and julia lowell for research assistance and franz scholl at the bundesbank jean pierre roth at the swiss national bank and officials at the u s treasury and the board of governors of the federal reserve system for making the daily intervention data available 1many of the econometric results finding little or no effect were reported in kenneth s rogoff 1984 and dale w henderson and stephanie sampson 1983 2for authoritative statements see henderson 1984 or maurice obstfeld 1990 3the exchange rate reaction to an increase in the relative supply of outside foreign assets may be reduced if there is an increase in their expected rate of return that induces a corresponding increase in demand

active pegging rational expectations and autonomy of monetary policy abstract a simple stochastic model of an open economy is used to analyze the effects of exchange rate policies and variability in the money supply process on monetary autonomy with deterministic exchange rate policies active pegging and assuming serially uncorrelated expectations monetary autonomy can be increased although not without limit

the duration of the smoking habit i introduction most smokers smoke out of habit once the habit is ended many of smoking s most harmful effects decline rather quickly preventing and ending cigarette addiction is therefore the straightest path toward preventing the health damage done by cigarette smoking consequently the related questions of why people start smoking and why they quit are central to formulating and evaluating effective antismoking policies duration or hazard models are designed to measure the probability of transition between states and are thus ideal for investigating the structural determinants of the transition between addiction and non addiction nevertheless most previous work in the economics literature uses the aggregate smoking participation rate defined as the percentage of people who currently smoke or an individual s probability of participation rather than a hazard rate to measure the attractiveness of habitual smoking this paper models the hazard rates of both starting and quitting the cigarette smoking habit the starting hazard rate is the probability that an individual will start smoking in a given time period conditional on being a nonsmoker until then the quitting hazard rate is the probability of quitting smoking in a given time period conditional on being a smoker since the starting date both of these rates should rise and fall in response to changes in the attractiveness of smoking the two rates will respond differently to different stimuli since the starting hazard reflects the point of view of nonsmokers and the quitting hazard reflects the point of view of smokers hazard or duration models possess several advantages over smoking participation models most obviously smoking participation rates cannot directly distinguish between increased starting rates and decreased quitting rates but the hazard models can also in a participation rate model it is difficult to control for the effect of the duration of the habit whereas duration models are designed specifically to allow for and measure the dependence of the hazard rate on duration another advantage is that the participation rate at any one time will oversample the number of long term smokers relative to those who had a short term habit whereas a duration model is designed to avoid this source of bias one drawback however is that because of their inherent panel nature the data requirements of duration models are somewhat more difficult to satisfy as shall be seen the only previous work in the economics literature that estimates the hazard rate of starting smoking is douglas and hariharan 1994 my paper improves upon douglas and hariharan in at least three important ways first it estimates the hazard rate of quitting smoking as well as that of starting second it takes into account variation in state level regulation third its time varying covariate model allows hazard rates to respond dynamically to changes in cigarette price regulation and information variables the use of time varying covariates is important because it brings the empirical model into much closer accord with theory the decision whether or not to start or quit smoking is an ongoing decision made one day at a time on the basis of current information the hazard of starting is greatest when the cost of the habit appears lowest and its benefit appears highest this comparison of cost and benefit changes through time as price information income and life cycle variables change while douglas and hariharan 1994 used price information from the potential smoker s most vulnerable age on the theory that its marginal effect is greatest at that time the model used in this paper allows each individual s hazard rate to respond to changes in price and public information as they occur the leading theoretical model of the decision to smoke is the rational addiction model of becker and murphy 1988 which assumes that consumers of addictive goods begin smoking only after fully weighing the costs and benefits of the habit

taylor rules and the canadian us equilibrium exchange rate abstract this paper identifies the canadian us equilibrium exchange rate based on a simple structural model of the real exchange rate in which monetary policy follows a taylor rule interest rate reaction function the exchange rate is explained by relative output and inflation as observable variables and by unobserved equilibrium rates as well as unobserved transitory components in output and the exchange rate using canadian data over 1974 2009 we jointly estimate the unobserved components and the structural parameters using the kalman filter and bayesian technique we find that canada s equilibrium exchange rate evolves smoothly and follows a trend depreciation the transitory component is found to be very persistent but much more volatile than the equilibrium rate resulting in few but prolonged periods of currency misalignments

a class of quadratic options for exchange rate stabilization abstract we propose the use of a new option which we call quadratic and that central banks could use to smooth exchange rate volatility through the hedging strategies of the issuers we derive analytic pricing and hedging formulas we suggest a criterion to derive the optimal for the central bank option parameters finally we perform several simulation exercises which show the effectiveness of using this option with or without conventional spot interventions

optimal and time consistent exchange rate management in an overlapping generations economy abstract this paper analyzes exchange rate management in a simple overlapping generations model this framework is used to evaluate alternative policies in terms of their implications for the welfare of individuals in the economy and for generating seigniorage when the chief concern is to provide a desirable store of value a policy of fixing the exchange rate does better when shocks are primarily of domestic origin while floating becomes more desirable when foreign shocks predominate the same is true when the government is concerned with maximizing total expected seigniorage although more intervention is typically desirable when generating seigniorage is the major objective when seigniorage concerns are paramount and when the monetary authority cannot establish a reputation for conducting monetary policy in a way that makes the currency a desirable store of value a national currency may not be viable in the absence of exchange controls such controls may be justified in this situation

does the choice of performance measure influence the evaluation of hedge funds abstract the sharpe ratio is adequate for evaluating investment funds when the returns of those funds are normally distributed and the investor intends to place all his risky assets into just one investment fund hedge fund returns differ significantly from a normal distribution for this reason other performance measures for hedge fund returns have been proposed in both the academic and practice oriented literature in conducting an empirical study based on return data of 2763 hedge funds we compare the sharpe ratio with 12 other performance measures despite significant deviations of hedge fund returns from a normal distribution our comparison of the sharpe ratio to the other performance measures results in virtually identical rank ordering across hedge funds

foreign exchange market efficiency tests implications of recent empirical findings abstract the recent empirical literature on the efficiency of the foreign exchange market has been characterized by strikingly contradictory conclusions drawn from similar empirical evidence these contradictions result because 1 different maintained hypotheses are held and 2 different criteria e g micro versus macroeconomic are used to judge the evidence in this survey we organize the empirical literature under several headings the presence of risk premiums empirical regularities in regression tests profitable trading rules and advanced econometric techniques in integrating this material we consider the implications of the current evidence for investors forecasters policy makers and theorists

dynamic exchange rate equilibria with uncertain government policy in this paper we link two exchange rate literatures by showing how threats of asset controls yields determinate exchange rates in general equilibrium models with otherwise perfect capital markets and by showing how for certain sequences of threats exchange rate determination may be well explained by monetary variables we find that in general there exists no natural exchange rate and market rates may be sensitive to changed perceptions about future exchange rate intervention

performance measurement with selectivity market and volatility timing the performance of portfolio managers depends on market timing volatility timing and security selection we develop holdings based performance measures that adjust for risk using stochastic discount factors display all three components in a consistent framework and avoid strong assumptions about managers behavior previous models leave out some of the components of performance and correcting for this we deliver better measures of selectivity sorting stocks held by funds on selectivity produces a quintile spread in four factor alphas greater than 2 5 per year before costs and more than 1 7 greater than found using the daniel grinblatt titman and wermers 1997 measure

informational efficiency and the open economy a troublesome feature of existing stochastic macroequilibrium models of the open economy is the nature of the informational assumptions usually made most of these models assume that full contemporaneous information on all relevant macrovariables is freely available to economic agents this is the assumption made for example in cox 7 driskill and mccafferty 10 driskill 8 and turnovsky 17 18 among others further when information gaps are introduced the lack of full current information refers to the inability of domestic agents to correctly identify permanent versus transitory components of movements in either the currently observed domestic money supply as in ueda 20 or the observable foreign price level 2 16 5 yet prevailing economic reality is characterized by the availability of differentiated current information to economic agents information or data on variables relevant to auction markets such as asset markets is far more easily and frequently available than information that relates to markets that are contractual in nature such as commodity markets a financial newspaper such as the wall street journal for example provides daily information on half a dozen foreign prime interest rates a multitude of u s