equilibrium and government commitment abstract how should a government use the power to commit to ensure a desirable equilibrium outcome in this paper i show a misleading aspect of what has become a standard approach to this question and i propose an alternative i show that the complete description of an optimal indeed of any policy scheme requires outlining the consequences of paths that are often neglected the specification of policy along those paths is crucial in determining which schemes implement a unique equilibrium and which ones leave room for multiple equilibria that depend on the expectations of the private sector

issue costs in the eurobond market the effects of market integration this study compares the issuance costs of eurobonds before and after the completion of the economic and monetary union emu in 2002 we find that the introduction of the euro has significantly reduced the issue cost of euro denominated bonds compared to bonds denominated in the legacy currencies the reduction in issue cost is not due to a decrease in underwriter compensation but rather to the elimination of underpricing the difference between the market price after trading commences and the offering price underwriter fee has declined substantially after the completion of the emu but this decline has been offset by an increase in underwriter spread the difference between the offering price and the guaranteed price to the issuer leaving total underwriter compensation unchanged the emu is also associated with significant reductions in bond maturity and syndicate size consistent with its expected effects on liquidity and issue costs in the eurobond market

pioneering price level targeting the swedish experience 1931 1937 in september 1931 sweden became the first country to make the stabilization of the domestic price level the official goal of its monetary policy actually the only country that so far has adopted such an explicit price level target starting from the issues and concepts familiar from research and policy experience of inflation targeting as contrasted to price level targeting this paper examines the evolution of the swedish price level targeting in the 1930s we bring out a number of similarities and differences between price stabilization in the 1930s and in the 1990s

the distributional impact of public services when needs differ this is the accepted version of a work that was accepted for publication in journal of public economics changes resulting from the publishing process such as peer review editing corrections structural formatting and other quality control mechanisms may not be reflected in this document changes may have been made to this work since it was submitted for publication a definitive version was subsequently published in journal of public economics 94 9 10 549 562 october 2010

the influence of household composition on household expenditure patterns theory and spanish evidence a concept of demographic separability is proposed that formalizes the notion that there are groups of goods adult goods that have little or no relationship to specific classes of household demographics the numbers or ages of children that there exist adult goods demographically separable from children is a necessary but not sufficient condition for the validity of rothbarth s method for measuring child costs we propose two different methods for testing demographic separability and present results from a 1981 survey of spain the econometric evidence is in fair agreement with the theoretical presuppositions

on measuring child costs with applications to poor countries the theoretical basis for measuring child costs is discussed and detailed consideration is given to two straightforward procedures for calculation engel s food share method and rothbarth s adult good method each of these methods embodies different definitions of child costs so that the same empirical evidence can generate quite different estimates depending on the method used it is shown that true costs are generally overstated by engel s method and understated by rothbarth s procedure although the latter unlike the former can provide a sensible starting point for cost measurement our estimates from sri lankan and indonesian data suggest that children cost their parents about 30 40 percent of what they spend on themselves

what do we learn about consumer demand patterns from micro data the aim of this paper is to assess the importance of using micro level data in the econometric analysis of consumer demand to do this we utilize a time series of repeated cross sections covering some 4 000 households in each of 15 years employing a number of different aggregation procedures we conclude that aggregate data alone are unlikely to produce reliable estimates of structural price and income coefficients however once certain aggregation factors as well as trend and seasonal components are included an aggregate model is not necessarily outperformed across all demand equations in terms of forecasting ability jel d12 c52 c31 the purpose of this paper is to develop a complete consumer demand system based on a time series of individual household data and to use it to measure the biases introduced into the study of consumer de mand behavior when aggregate data are used in place of the appropriate microeco nomic data we assess the suitability of ag gregate data through the impact on income and price elasticities and by evaluating the ability of both micro and aggregate based models to forecast aggregate consumer de mand the biases introduced by the use of aggregate data depend upon the way that household characteristics interact with in come and price effects and on departures of demand systems from linearity we explore the structure of microeconomic demand sys tems and the role of household characteris tics in the behavior of consumer demand both for the light this may shed on the pattern of future demands and for the im plications this behavior has for issues of aggregation consumer demand patterns typically found in micro data sets vary considerably across households with different household characteristics and with different levels of income we model this variability by making intercept and slope parameters in the budget share equations of our demand sys tem depend on household characteristics and by allowing for nonlinear total log expenditure terms in fact in theory consistent demand systems it is total ex penditure rather than disposable income that is allocated across goods we find that this general framework leads to a well specified data coherent demand system which is a quadratic extension of the popu lar almost ideal model of angus s deaton and john muellbauer 1980 the micro level estimates are shown to be sensitive to the treatment of endogeneity of total expen diture and to the specification of interaction terms with household characteristics in ad dition this specification is also shown to possess many attractive features for the evaluation of aggregate models

capital market imperfections and the theory of optimum currency areas this paper studies how within and cross country capital market imperfections affect the welfare effects of forming a currency union the analysis considers a bank only world where intermediaries compete in cournot fashion and monitoring and state verification are costly the first part determines the credit market equilibrium and the optimal number of banks prior to joining the union the second part discusses the benefits from joining a currency union a competition effect is identified and related to the added monitoring costs that banks may incur when operating outside their home country through an argument akin to the brander krugman reciprocal dumping model of bilateral trade however in our framework whether joining a union raises welfare of the home country is ambiguous it depends on the relative strength of investment creation and intermediation diversion effects

older people s participation in extra cost disability benefits the targeting of an uk extra cost disability benefit for older people attendance allowance is analyzed using longitudinal data from the british household panel survey first a binary model of benefit participation is used to investigate whether receipt is responsive to the onset of disability second matching estimators are used to evaluate the consequences of missed participation on later financial wellbeing results indicate that participation is highly responsive to the onset of disability although the chance of delays in receipt emerges personal characteristics unrelated to eligibility also appear to influence benefit receipt translating into sizeable differences in the amount of cash support received the comparison of recipients with observationally equivalent non recipients confirms that timely participation reduces disabled older people s financial strain

discretionary monetary policy and the zero lower bound on nominal interest rates abstract ignoring the existence of the zero lower bound on nominal interest rates one considerably understates the value of monetary commitment in new keynesian models a stochastic forward looking model with an occasionally binding lower bound calibrated to the u s economy suggests that low values for the natural rate of interest lead to sizeable output losses and deflation under discretionary monetary policy the fall in output and deflation are much larger than in the case with policy commitment and do not show up at all if the model abstracts from the existence of the lower bound the welfare losses of discretionary policy increase even further when inflation is partly determined by lagged inflation in the phillips curve these results emerge because private sector expectations and the discretionary policy response to these expectations reinforce each other and cause the lower bound to be reached much earlier than under commitment

household equivalence scales and interpersonal comparisons recent papers have used household equivalence scales to construct measures of welfare inequality this procedure rests on an often implicit value judgement namely that if after adjustment for demographic characteristics two households are on the same indifference curve they are equally well off that value judgement is not compelling and there are situations in which it is ethically repugnant this is particularly likely if tastes are functions of past experience and income

real implications of the zero bound on nominal interest rates if monetary policy succeeds in keeping average inflation very low nominal interest rates may occasionally be constrained by the zero lower bound the degree to which this constraint has real implications depends on the monetary policy feedback rule and the structure of price setting policy rules that make the price level stationary lead to small real distortions from the zero bound if policy imparts persistence into the inflation rate the real implications of the zero bound are large in the presence of backward looking price setting and small if prices are set to maximize profits

price level targeting vs inflation targeting a free lunch price level targeting without base drift and inflation targeting with base drift are compared under commitment and discretion with persistence in unemployment price level targeting is often said to imply more short run inflation variability and thereby more employment variability than inflation targeting counter to this conventional wisdom under discretion a price level target results in lower inflation variability than an inflation target if unemployment is at least moderately persistent a price level target also eliminates the inflation bias under discretion and as is well known reduces long term price variability society may be better off assigning a price level target to the central bank even if its preferences correspond to inflation targeting a price level target thus appears to have more advantages than commonly acknowledged

monetary union a welfare based approach abstract this article attempts to shed light on the consequences of the transition to emu for individual welfare following specific shocks to this end we develop a two country intertemporal general equilibrium model that extends the obstfeld and rogoff journal of political economy 103 3 1995 624 specification to nominal rigidities through price adjustment costs and pricing to market behavior we show that when facing a positive asymmetric permanent shock to either technology or government expenditures occurring in one country implementing a monetary union is beneficial to the households living in this economy conversely it is detrimental to foreigners further a sensitivity analysis shows that if the gains losses to implementing monetary union are qualitatively robust when facing changes in the degree of nominal rigidities and the elasticity of substitution between foreign and domestic goods they are quite sensitive to the degree of pricing to market in the economy

non linearities and equivalence scales this paper focuses on the estimation and testing of equivalence scales in the context of a demand system with nonline ar logarithmic expenditure effects in its budget share equations the authors show that such nonlinearity enables one to identify the scal es without demographic separability restrictions on preferences and to avoid false rejection of the hypothesis that the scales are independ ent of the base utility level the empirical analysis is based on micro data drawn from the u k family expenditure survey copyright 1993 by royal economic society

currency unions and the real exchange rate abstract when the transmission mechanisms are different across member states real exchange rate shocks affect currency unions aggregate inflation output and welfare at the regional level the impact of real exchange rate movements is larger in smaller countries

does self assessed health measure health despite concerns about reporting biases and interpretation self assessed health sah remains the measure of health most used by researchers in part reflecting its ease of collection and in part the observed correlation between sah and objective measures of health using a unique australian data set which consists of survey data linked to administrative individual medical records we present empirical evidence demonstrating that sah indeed predicts future health as measured by hospitalizations out of hospital medical services and prescription drugs our large sample size allows very disaggregate analysis and we find that sah predicts more serious chronic illnesses better than less serious illnesses finally we compare the predictive power of sah relative to administrative data and an extensive set of self reported health measures sah does not add to the predictive power of future utilization when the administrative data is included and improves prediction only marginally when the extensive survey

contemporaneous and intertemporal child costs equivalent expenditure vs equivalent income scales abstract parents may provide for their children by drawing on savings or borrowing as well as by reducing current consumption this means that child costs may be partly paid from reducing consumption in periods when the children themselves are not in the family static comparisons of consumption costs between households with and without children are therefore affected by the extent to which parents are willing and able to meet child costs through intertemporal transfers this paper analyses the implications of this argument for the estimation of adult equivalent scales and provides empirical illustrations using individual household data

revealed community equivalence scales abstract this paper estimates the equivalence scale revealed by discretionary community allocations of welfare benefits to poor households i apply the proposed approach to a subsidized rice program in indonesia in which villages designated program beneficiaries and estimate the equivalence scale implicit in the beneficiaries they selected i find that the revealed community equivalence scale for this program lies much closer to per capita expenditure than traditional demand based equivalence scales particularly in the poorest communities this suggests that per capita expenditure may be closer to how poor communities actually compare households when allocating aid than previously thought

price level versus inflation targeting abstract this paper shows that price level targeting outperforms inflation targeting in the standard new keynesian model under the assumption that the central bank is forced to operate in an environment characterized by discretion in the benchmark case with no persistence in the shocks the commitment solution can be fully replicated intuitively price level targeting introduces history dependence and a stationary level of prices both of which are prominent features of the commitment solution

currency areas international monetary regimes and the employment inflation tradeoff we show that the employment inflation tradeoff facing a central bank depends on the size of the economy for which it sets monetary policy for inflation averse central banks the tradeoff improves the smaller the relevant economy the tradeoff facing the region whose central bank controls the exchange rate in a managed exchange rate regime does not change moving to a symmetric flexible exchange rate regime instead the core region in an asymmetric regime faces a worse tradeoff than under flexible exchange rates equipped with these results we explore the issue of the optimal size of a currency area both in a two and in a three region world 1998 elsevier science b v

learnability and monetary policy a global perspective abstract the recent literature on monetary policy design has emphasized the importance of equilibrium determinacy and learnability in the choice of policy rules this paper contains an analysis of the learnability of the equilibrium in a class of simple micro founded models in which the policy authority uses a taylor type monetary policy rule unlike previous analyses the model economy is not linearized about a steady state instead a global perspective is adopted globally the nonlinear model economy can possess rational expectations equilibria other than the steady state consistent with the inflation target of the monetary authorities these include a second low inflation liquidity trap steady state periodic equilibria and sunspot equilibria the main results in the paper characterize the conditions under which these alternative equilibria maybe stable under adaptive learning even when the policy rule obeys the taylor principle the stability of multiple equilibria is associated with policy rules which are forecast based an important finding is that backward looking taylor type policy rules can guarantee that the unique learnable equilibrium is the steady state associated with the inflation target of the monetary authority

inflation stabilization and welfare the case of a distorted steady state this paper considers the appropriate stabilization objectives for monetary policy in a microfounded model with staggered price setting rotemberg and woodford 1997 and woodford 2002 have shown that under certain conditions a local approximation to the expected utility of the representative household in a model of this kind is related inversely to the expected discounted value of a conventional quadratic loss function in which each period s loss is a weighted average of squared deviations of inflation and an output gap measure from their optimal values zero however those derivations rely on an assumption of the existence of an output or employment subsidy that offsets the distortion due to the market power of monopolistically competitive price setters so that the steady state under a zero inflation policy involves an efficient level of output here we show how to dispense with this unappealing assumption so that a valid linear quadratic approximation to the optimal policy problem is possible even when the steady state is distorted to an arbitrary extent allowing for tax distortions as well as market power and when as a consequence it is necessary to take account of the effects of stabilization policy on the average level of output we again obtain a welfare theoretic loss function that involves both inflation and an appropriately defined output gap though the degree of distortion of the steady state affects both the weights on the two stabilization objectives and the definition of the welfare relevant output gap in the light of these results we reconsider the conditions under which complete price stability is optimal and find that they are more restrictive in the case of a distorted steady state we also consider the conditions under which pure randomization of monetary policy can be welfare improving and find that this is possible in the case of a sufficiently distorted steady state though the parameter values required are probably not empirically realistic

optimal monetary policy under commitment with a zero bound on nominal interest rates we determine optimal monetary policy under commitment in a forwardlooking new keynesian model when nominal interest rates are bounded below by zero the lower bound represents an occasionally binding constraint that causes the model and optimal policy to be nonlinear a calibration to the u s economy suggests that policy should reduce nominal interest rates more aggressively than suggested by a model without lower bound rational agents anticipate the possibility of reaching the lower bound in the future and this amplifies the effects of adverse shocks well before the bound is reached while the empirical magnitude of u s mark up shocks seems too small to entail zero nominal interest rates shocks affecting the natural real interest rate plausibly lead to a binding lower bound under optimal policy however this occurs quite infrequently and does not imply positive average inflation rates in equilibrium interestingly the presence of binding real rate shocks alters the policy response to non binding markup shocks

liquidity traps learning and stagnation we examine global economic dynamics under learning in a new keynesian model in which the interest rate rule is subject to the zero lower bound under normal monetary and fiscal policy the intended steady state is locally but not globally stable large pessimistic shocks to expectations can lead to deflationary spirals with falling prices and falling output to avoid this outcome we recommend augmenting normal policies with aggressive monetary and fiscal policy that guarantee a lower bound on inflation in contrast policies geared toward ensuring an output lower bound are insufficient for avoiding deflationary spirals

life cycle expenditure allocations and the consumption costs of children abstract in this paper we assess whether it is changing needs or intertemporal substitution that dominate household expenditure responses to the presence of children over the life cycle we construct lifetime expenditure paths for households with different demographic profiles and consider the shape of these paths and some possible implications for welfare measures simulated expenditure paths based on consistent single period and multi period models indicate that it is indeed changing needs that dominate such paths in periods when children are present in the household however allowing for intertemporal substitution is still shown to be important since it can introduce new information relevant to the calculation of household welfare

financial intermediation and delegated monitoring this paper develops a theory of financial intermediation based on minimizing the cost of monitoring information which is useful for resolving incentive problems between borrowers and lenders it presents a characterization of the costs of providing incentives for delegated monitoring by a financial intermediary diversification within an intermediary serves to reduce these costs even in a risk neutral economy the paper presents some more general analysis of the effect of diversification on resolving incentive problems in the environment assumed in the model debt contracts with costly bankruptcy are shown to be optimal the analysis has implications for the portfolio structure and capital structure of intermediaries

equivalence scales and the costs of disability abstract the impact of disability on household welfare is estimated by equivalence scales using data from the 1986 1987 fes disability survey three methods of identifying scales from cross section data are considered these imply a series of restrictions that are tested on quadratic logarithmic engel curves the results indicate that there are substantial consumption costs associated with physical disability

expectation traps and discretion abstract we develop a dynamic model with optimizing private agents and a benevolent optimizing monetary authority that cannot commit to future policies we characterize the set of sustainable equilibria and discuss the implications for institutional reform we show that there are equilibria in which the monetary authority pursues inflationary policies because that is what private agents expect we call such equilibria expectation traps alternative institutional arrangements for the conduct of monetary policy which impose limited forms of commitment on the policymaker can eliminate expectation traps journal of economic literatureclassification numbers e31 e42 e50 e51 e58

fiscal policy in an expectations driven liquidity trap we study the effects of fiscal policy interventions in a liquidity trap in a model with nominal rigidities and an interest rate rule in a liquidity trap caused by a self fulfilling state of low confidence higher government spending has deflationary effects that reduce the spending multiplier when the zero lower bound is binding instead cuts in marginal labor tax rates are inflationary and become more expansionary when the zero lower bound is binding these findings contradict popular views about the effects of fiscal policy in a liquidity trap

household equivalence scales and welfare comparisons abstract the ratio of cost functions of different households facing the same prices and attaining the same utility level is a true cost of demographic characteristics index this index is independent of a base level of income or utility ib if and only if it equals a ratio of household equivalence scales that are themselves ib applied cost index and equivalence scales specifications are usually ib this paper describes the general restrictions on cost functions and social welfare functions required for ib scales and for their use in welfare analysis

the taylor rule and optimal monetary policy where it denotes the fed s operating target for the federal funds rate pt is the inflation rate measured by the gdp deflator yt is the log of real gdp and y t is the log of potential output identified empirically with a linear trend the rule has since been subject to considerable attention both as an account of actual policy in the united states and elsewhere and as a prescription for desirable policy taylor argues for the rule s normative significance both on the basis of simulations and on the ground that it describes u s policy in a period in which monetary policy is widely judged to have been unusually successful taylor 1999 suggesting that the rule is worth adopting as a principle of behavior here i wish to consider to what extent this prescription resembles the sort of policy that economic theory would recommend i consider the question in the context of a simple but widely used optimizing model of the monetary transmission mechanism which allows one to reach clear conclusions about economic welfare the model is highly stylized but incorporates important features of more realistic models and allows me to make several points that are of more general validity out of concern for the robustness of the conclusions reached the analysis here addresses only broad qualitative features of the taylor rule and attempts to identify features of a desirable policy rule that are likely to hold under a variety of model specifications

inflation targeting a new framework for monetary policy he world s central bankers and their staffs meet regularly in venues from basle to washington to share ideas and discuss common problems perhaps these frequent meetings help explain why changes in the tactics and strategy of monetary policymaking such as the adoption of money growth targets in the 1970s the intensification of efforts to reduce inflation in the 1980s and the recent push for increased institutional independence for central banks tend to occur in many countries more or less simultaneously whatever their source major changes in the theory and practice of central banking are of great importance for both individual countries and the international economy in this article we discuss a new strategy for monetary policy known as inflation targeting which has sparked much interest and debate among central bankers and monetary economists in recent years this approach is characterized as the name suggests by the announcement of official target ranges for the inflation rate at one or more horizons and by explicit acknowledgment that low and stable inflation is the overriding goal of monetary policy other important features of inflation targeting include increased communication with the public about the plans and objectives of the monetary policymakers and in many cases increased accountability of the central bank

the perils of taylor rules abstract since john taylor s 1993 carnegie rochester conf ser publ policy39 195 214 seminal paper a large literature has argued that active interest rate feedback rules that is rules that respond to increases in inflation with a more than one for one increase in the nominal interest rate are stabilizing in this paper we argue that once the zero bound on nominal interest rates is taken into account active interest rate feedback rules can easily lead to unexpected consequences specifically we show that even if the steady state at which monetary policy is active is locally the unique equilibrium typically there exist an infinite number of equilibrium trajectories originating arbitrarily close to that steady state that converge to a liquidity trap that is a steady state in which the nominal interest rate is near zero and inflation is possibly negative journal of economic literature classification numbers e52 e31 e63

a century of us central banking goals frameworks accountability several key episodes in the 100 year history of the federal reserve have everal key episodes in the 100 year history of the federal reserve have been referred to in various contexts with the adjective great attached to been referred to in various contexts with the adjective great attached to them the great experiment of the federal reserve s founding the great them the great experiment of the federal reserve s founding the great depression the great infl ation and subsequent disinfl ation the great moderation depression the great infl ation and subsequent disinfl ation the great moderation and the recent great recession here i ll use this sequence of great episodes and the recent great recession here i ll use this sequence of great episodes to discuss the evolution over the past 100 years of three key aspects of federal to discuss the evolution over the past 100 years of three key aspects of federal reserve policymaking the goals of policy the policy framework and accountability reserve policymaking the goals of policy the policy framework and accountability and communication the changes over time in these three areas provide a useful and communication the changes over time in these three areas provide a useful perspective i believe on how the role and functioning of the federal reserve have perspective i believe on how the role and functioning of the federal reserve have changed since its founding in 1913 as well as some lessons for the present and for changed since its founding in 1913 as well as some lessons for the present and for the future the future

inflation targeting should it be modeled as an instrument rule or a targeting rule abstract the paper discusses how current inflation targeting should be modeled and argues that it is better represented as a commitment to a targeting rule a rule specifying operational objectives for monetary policy or a condition for the target variables than as a commitment to a simple instrument rule like a taylor rule

nonlinear adventures at the zero lower bound abstract in this paper we argue for the importance of explicitly considering nonlinearities in analyzing the behavior of the new keynesian model with a zero lower bound zlb of the nominal interest rate to show this we report how the decision rules and the equilibrium dynamics of the model are substantially affected by the nonlinear features brought about by the zlb we also illustrate a tension between the length of a spell at the zlb and the drop in consumption there

quantitative modelling of the eur chf exchange rate during the target zone regime of september 2011 to january 2015 krugman 1991 s target zone model for exchange rate dynamics has become the reference of a large part of this literature despite its simplicity and elegance empirical evidence has been lacking not least because it is difficult to capture the predicted non linear relationship between the observable exchange rate and the non observable fundamental value this is why we propose a different approach by inverting locally the relation between exchange rate and fundamental value we derive analytical expressions for the conditional volatility and the probability density as a function of the exchange rate this allows us to examine krugman s prediction directly from historical data and furthermore enables us to test the smooth pasting condition which is intimately related to the no arbitrage condition concretely we study the performance of the euro swiss franc exchange rate in the extraordinary period from september 6 2011 to january 15 2015 when the swiss national bank enforced a minimum exchange rate of 1 20 swiss francs per euro we show that the data are well explained by the theory and conclude that krugman s target zone model holds after all but apparently only under extreme and sustained pressure that pushes continuously the exchange rate very close to the boundary of the target zone

optimal monetary policy at the zero interest rate bound what should a central bank do when faced with a weak aggregate demand even after reducing the short term nominal interest rate to zero to address this question we solve a central bank s intertemporal loss minimization problem in which the non negativity constraint on nominal interest rates is explicitly considered we find that the optimal path is characterized by policy inertia in the sense that a zero interest rate policy should be continued for a while even after the natural rate of interest returns to a positive level by making such a commitment the central bank is able to achieve higher expected inflation lower long term nominal interest rates and a weaker domestic currency in the adverse periods when the natural rate of interest significantly deviates from a steady state level

the effect of the euro on foreign direct investment abstract in this paper the recent effect of the european monetary union on inward fdi flows is examined using a difference in differences approach the estimated results show that the introduction of the euro raised inward fdi flows by approximately 16 within the euro area by approximately 11 to non members and weakly by around 8 from non member countries into the euro area moreover the geographical effects of the euro are explored the results show partial agglomeration tendencies for the euro area there are also some indications of increased importance of vertical specialization in the sample

monetary policy interactions under managed exchange rates this paper studies a two country monetary system where one country sets its money stock but gives up control of the exchange rate and the other country gives up control of its own money stock but can set the exchange rate independently cournot nash equilibria under managed rates differ significantly from those under fixed or floating rates the country that controls the exchange rate can effectively offset inflationary shocks by changing the exchange rate at the expense of the foreign country and as a result can be better off than the foreign country this result provides an example of a successful disinflation through an exchange rate appreciation in a two country world and it indicates that managed exchange rate regimes tend to be unstable since both countries find it desirable to affect the exchange rate managed exchange rates however are a stable outcome when the center country is so much larger than its partner that changes in the real exchange rate do not affect its output and real income copyright 1989 by the london school of economics and political science

a general theory and some evidence of expectation traps in monetary policy i show that multiple equilibria are a general property of economies under full monetary policy discretion three simple conditions are sufficient to rule out generically a unique equilibrium in a static economy the key departure from barro and gordon 1983 is to consider bounded welfare costs of inflation i also show that in a two markov equilibrium economy the inflation response to certain perturbations is generically qualitatively different in each equilibrium finally i discuss some evidence on inflation dynamics that supports the hypothesis that u s monetary policy was caught in an expectation trap during the high inflation episode of the 1970s

the perils of nominal targets a monetary authority can be committed to pursuing an inflation price level or nominal gdp target yet systematically fail to achieve the prescribed goal constrained by the zero lower bound on the policy rate the monetary authority is unable to implement its objectives when private sector expectations stray far enough from the target low inflation expectations become self fulfilling resulting in an additional markov equilibrium in which the monetary authority falls short of the nominal target average output is below its efficient level and the policy rate is typically low introducing a stabilization goal for long term nominal rates can implement a unique markov equilibrium without fully compromising stabilization policy

mobile capital domestic institutions and electorally induced monetary and fiscal policy the literature on global integration and national policy autonomy often ignores a central result from open economy macroeconomics capital mobility constrains monetary policy when the exchange rate is fixed and fiscal policy when the exchange rate is flexible similarly examinations of the electoral determinants of monetary and fiscal policy typically ignore international pressures altogether we develop a formal model to analyze the interaction between fiscal and monetary policymakers under various exchange rate regimes and the degrees of central bank independence we test the model using data from oecd countries we find evidence that preelectoral monetary expansions occur only when the exchange rate is flexible and central bank independence is low preelectoral fiscal expansions occur when the exchange rate is fixed we then explore the implications of our model for arguments that emphasize the partisan sources of macroeconomic policy and for the conduct of fiscal policy after economic and monetary union in europe

optimal monetary policy and determinacy under active passive regimes abstract should one expect inflation to be stable when monetary policy is passive according to the workhorse model for monetary policy analysis the answer should be no if the passive spell is too long in this paper i develop a new keynesian model in which monetary policy is optimal subject to a loose commitment constraint i show that there is a threshold degree of commitment such that the equilibrium is locally unique when monetary policy switches between active and passive stances regardless of the length of the passive spell this result also holds for a version of the model where the passive spell is endogenous and due to a demand shock driving the economy to the zero lower bound

the deflation bias and committing to being irresponsible i model deflation at zero nominal interest rate in a microfounded general equilibrium model i show that one can analyze deflation as a credibility problem if three conditions are satisfied first the government s only policy instrument is increasing the money supply by open market operations in short term bonds second the economy is subject to large negative demand shocks third the government cannot commit to future policy i call the credibility problem that arises under these conditions the deflation bias i propose several policies to solve it they all involve printing money or issuing nominal debt in addition they require cutting taxes buying real assets such as stocks or purchasing foreign exchange the government credibly commits to being irresponsible by pursuing these policies it commits to higher money supply in the future so that the private sector expects inflation instead of deflation this is optimal since it curbs deflation and increases output by lowering the real rate of return

measurement of health state utilities for economic appraisal health status measurement for use in economic appraisal of health care programmes is reviewed in this paper with particular emphasis on utility measurement a framework for economic appraisal is presented displaying the various components that must be measured and showing how the three forms of analysis cost effectiveness analysis cost benefit analysis and cost utility analysis relate to the framework and to each other one of the components in the framework is health status it can be measured using ad hoc numeric scales willingness to pay receive or health state utilities the determination of health state utilities is reviewed covering the following issues alternative sources of utilities health state descriptions multi attribute utility approach determination of appropriate subjects utility aggregation and accuracy three measurement techniques for health state utilities are described in detail rating scale standard gamble and time trade off the use of these methods is described for both chronic and temporary health states and for both health states considered better than death and those considered worse than death

a unified approach to incorporating demographic or other effects into demand systems a general method of introducing demographic effects into any demand system using modifying functions is described which permits complicated interactions of demographic variables with prices and expeditures theorems give properties the modifying functions must have to ensure integrability of the resulting system demand equations of the new system are given explicitly as functions of the original demand equations and the modifying functions the procedure is interpreted as altering a households technology and is shown to encompass adult equivalent scales and related methods examples of modifying functions are derived and applications of the technique to uses other than demographic variation are considered excerpt

the introduction of the euro and its effects on portfolio decisions abstract examining investment behavior related to the euro introduction we address the relevance of different investment determinants with the advent of the currency union two potential sources of portfolio reallocation can be distinguished first the diminishment of exchange rate risk and transaction costs within the emu second the increase of correlation of emu returns so that diversification benefits decreased we test for structural breaks in the holdings of german investors and estimate a market model to account for the two effects a significant decrease in national and an increase in emu and rest of the world investments can be observed comparing the observed holdings with benchmark portfolios we find that investment home bias has diminished since the euro introduction

the state of new keynesian economics a partial assessment i have benefited from the financial support of the generalitat de catalunya agaur grant 2017sgr1393 and the ministerio de economia industria y competitividad grant eco2017 87827

currency unions and international integration this paper characterizes the integration patterns of international currency unions such as the cfa franc zone we empirically explore different features of currency unions and compare them to countries with sovereign monies by examining the criteria for mundellos concept of an optimum currency area we find that members of currency unions are more integrated than countries with their own currencies for instance we find that currency union members have more trade and less volatile real exchange rates than countries with their own monies business cycles are more highly synchronized across currency union countries than across countries with sovereign monies

an optimum currency area odyssey abstract the theory of optimum currency areas was conceived and developed in three highly influential papers written by mundell 1961 mckinnon 1963 and kenen 1969 those authors identified characteristics that potential members of a monetary union should ideally possess in order to make it feasible to surrender a nationally tailored monetary policy and the adjustment of an exchange rate of a national currency we trace the development of optimum currency area theory which after a flurry of research into the subject in the 1960s was relegated to intellectual purgatory for about 20 years we then discuss factors that led to a renewed interest into the subject beginning in the early 1990s milton friedman plays a pivotal role in our narrative friedman s work on monetary integration in the early 1950s presaged subsequent optimum currency area contributions mundell s classic formulation of an optimal currency area was aimed in part at refuting friedman s strong case for floating exchange rates and friedman s work on the role of monetary policy had the effect of helping to revive interest in optimum currency area analysis the paper concludes with a discussion of recent analytical work using new keynesian models which has the promise of fulfilling the unfinished agenda set out by the original contributors to the optimum currency area literature that is providing a consistent framework in which a country s characteristics can be used to determine its optimal exchange rate regime

the southern african development community suitable for a monetary union abstract this paper investigates whether a monetary union is desirable among the countries of the southern african development community sadc we employ a generalised auto regressive conditional heteroscedasticity garch model to consider the share of the variation in real exchange rates rers vis a vis south africa that can be explained by the divergence in monetary and fiscal policies the results show that monetary integration would substantially eliminate real exchange rate variation due to different monetary policies for some members the study concludes that a monetary union that embraces all sadc members would amass large costs relative to the benefits and hence would not be desirable

the us and the european montary system ems a stylised asymmetrical two country model numerical simulation methods were used to explore the consequences of asymmetrical behaviour in a two countary model the asymmetries are located in the asset and goods demand functions and in the parameters governing fosreign exchange market intervention in a stylized fashion these asymmetries reflect differences that might be characteriestic of differences between the usa and the european countries the ems the model is in continuous time with an overlapping wage contact set up underlying the domestic inflation process good demand functions which incorporate dependence on wealth and rational expectations shocks to the model reveal the effect of the asymmetries when compared to a fully symmetrical bases case

time consistent monetary policy with endogenous price rigidity abstract i characterize time consistent equilibrium in an economy with price rigidity and an optimizing monetary authority operating under discretion firms have the option to increase their frequency of price change at a cost in response to higher inflation previous studies which assume a constant degree of price rigidity across inflation regimes find two time consistent equilibria one with low inflation the other with high inflation in contrast when price rigidity is endogenous the high inflation equilibrium ceases to exist hence time consistent equilibrium is unique this result depends on two features of the analysis 1 a plausible quantitative specification of the fixed cost of price change and 2 the presence of an arbitrarily small cost of inflation that is independent of price rigidity

effective lower bound risk abstract even when the policy rate is currently not constrained by its effective lower bound elb the possibility that the policy rate will become constrained in the future lowers today s inflation by creating tail risk in future inflation and thus reducing expected inflation in an empirically rich model calibrated to match key features of the u s economy we find that the tail risk induced by the elb causes inflation to undershoot the target rate of 2 by as much as 50 basis points at the economy s risky steady state our model suggests that achieving the inflation target may be more difficult now than before the great recession if the likely decline in long run neutral rates has led households and firms to revise up their estimate of the frequency of future elb events