the predictive content of the output gap for inflation resolving in sample and out of sample evidence this paper evaluates potential explanations for the sometimes poor forecasting performance of the phillips curve one explanation is that out of sample metrics are noisy or equivalently have relatively low power another potential explanation is instability in the coefficients of the model to assess these forces this paper compares sample forecasting results to results from bootstrap simulations of models that either assume stability or allow breaks in the coefficients of the model this analysis indicates that a significant portion of the weakness of the out of sample evidence is attributable to power limitations but instabilities in the coefficients on the output gap also play a role

output dynamics in real business cycles models the time series literature reports two stylized facts about output dynamics in the united states gnp growth is positively autocorrelated and gnp appears to have an important trend reverting component this paper investigates whether current real business cycle rbc models are consistent with these stylized facts many rbc models have weak internal propagation mechanisms and must rely on external sources of dynamics to replicate both facts models that incorporate labor adjustment costs are partially successful they endogenously generate positive autocorrelation in output growth but they need implausibly large transitory shocks to match the trend reverting component in output

nominal income targeting in an open economy optimizing model abstract this paper presents simulation results regarding the performance of nominal income targeting a monetary policy rule that sets interest rates in response to deviations of nominal gdp growth from a target path the macroeconomic model is one in which agents solve dynamic optimization problems with rational expectations but in an environment with slow price adjustments in the present version consumption choices reflect habit formation and the economy is open to international flows of goods and securities when calibrated to quarterly us data the model s results suggest that nominal income targeting performs well in relation to inflation targeting and taylor rules

structural evolution of the postwar u s economy we consider a time varying parameter vector autoregressive model with stochastic volatility and mixture innovations to study the empirical relevance of the lucas critique for the postwar u s economy the model allows blocks of parameters to change at endogenously estimated points of time contrary to the lucas critique there are large changes at certain points of time in the parameters associated with monetary policy that do not correspond to changes in reduced form parameters for inflation or the unemployment rate however the structure of the u s economy has evolved considerably over the postwar period with an apparent reduction in the late 1980s in the impact of monetary policy shocks on inflation though not on the unemployment rate related we find changes in the phillips curve tradeoff between inflation and cyclical unemployment measured as the deviation from the time varying steady state unemployment rate implied by the model in the 1970s and especially since the mid 1990s

assessing nominal income rules for monetary policy with model and data uncertainty nominal income rules for monetary policy have long been debated but two issues are of particular recent interest first there are questions about the performance of such rules over a range of plausible empirical models especially models with and without explicit rational inflation expectations second there are questions about the performance of these rules in real time using the type of data that is actually available contemporaneously to policy makers rather than final revised data this paper determines optimal monetary policy rules in the presence of such model uncertainty and real time data uncertainty and finds only a limited role for nominal output growth

a theory of interlinked rural transactions this paper argues that the interlinking of labor output and credit contracts often observed in rural economies can be regarded as an attempt to improve allocative efficiency in the face of moral hazard it advances an economic explanation of the phenomenon which is rooted in the view that prevalent modes of transaction of which interlinked contracts are an example are shaped by technological considerations interlinking is shown to be an efficient economic response to unequally distributed information arising from the uncertainty which characterizes subsistence agriculture all pareto efficient allocations require a combination of wage cum output sharing with consumption credit contracts the analytical framework set up to demonstrate the results is used to examine the response of the contractual parameters to changes in i the returns to alternative occupations available to tenant laborers ii the cost of credit to the village economy and iii the riskiness of cultivation the analysis concludes that public policy to alleviate rural poverty must recognize the relationships between technological considerations and modes of transaction in the absence of a complete set of markets

dynamic inconsistencies counterfactual implications of a class of rational expectations models a number of recent papers have developed dynamic macroeconomic models that incorporate rational expectations and optimizing foundations while the theoretical motivation behind these models is sound the dynamic implications of many of the specifications that assume rational expectations and optimizing behavior can be seriously at odds with the data for both inflation and real side variables exhibit gradual and hump shaped responses to real and monetary shocks for models that are intended for monetary policy analysis these dynamic shortcomings should be considered quite serious when monetary policy has only short run effects on real variables the inability to approximately capture the short run responses of inflation or real variables to policy shocks makes a model unsuitable for policy analysis this paper identifies a simple feature common to many dynamic specifications for prices and real variables that causes the problem the paper also discusses several potential solutions to the problem including alterations to the expectations assumption to the order of differencing implicit in the model and to the underlying behavioral assumptions this abstract was borrowed from another version of this item

deposit insurance reform what are the issues and what needs to be fixed abstract the current problems in the commercial banking industry have led to widespread calls for reform of the deposit insurance contract on the grounds that it promotes moral hazard we review the empirical evidence for the significance of moral hazard as an important cause of the present crisis we then evaluate various reform proposals grouped into two broad classes proposals that seek to impose greater discipline on bank stockholders and proposals to increase the disciplinary role of bank debtholders finally we identify some issues that have received inadequate attention in the literature on bank regulation

privacy and time consistent optimal labor income taxation abstract incomplete information is a commitment device for time consistency problems in the context of time consistent optimal labor income taxation privacy can lead to a pareto superior outcome and increases the effectiveness of public education as a second best policy

interest rate volatility and monetary policy in october 1979 the federal reserve shifted from an interest rate oriented operating procedure to a reserves oriented procedure it is argued in this paper that part of the very large increase in interest rate volatility which resulted from the policy switch may have been due to shifts in the parameters of the money demand equation shifts due to the adoption of a reserve aggregates operating procedure this result is derived by comparing rational expectations equilibria in a simple theoretical model under alternative policy rules this allows the variance of interest rates to be explicitly expressed as a function of the policy rule this abstract was borrowed from another version of this item

monetary policy regime shifts new evidence from time varying interest rate rules i introduction interest rate policies are complex decisions they rely on a multitude of indicators and models and are by nature associated to events not always captured by relatively simple econometric tools nonetheless there is now a widespread consensus that the class of simple policy rules examined by recent microfounded models of the economy generates stabilization properties that are very close to those of optimal feedback rules woodford 2003 feedback rules nowadays are customary tools for monetary policy analysis furthermore rule based policymaking is generally accepted as the reference framework of monetary policy strategies bank of england 1999 european central bank 2004 monetary policy reaction functions summarize the importance that policymakers attach to policy objectives as well as their views on the structure of the economy traditionally those functions are estimated as constant parameters policy rules this is a plausible simplification but a number of reasons suggest that rules should allow for instability and parameter variation over time constant parameter reaction functions might blur the role played by various real world factors 1 model uncertainty 2 conflicting objectives 3 shifting preferences on policymakers choices and 4 nonlinearities in particular reduced form policy models that do not allow for shifts and asymmetries in behavioral relationships could produce misleading results dynamic stochastic general equilibrium dsge models represent one potentially promising way of overcoming these problems this increasingly popular approach is based on microfounded descriptions of the economy recent studies also provide novel techniques to estimate and evaluate linearized dsge models using bayesian methods del negro et al 2007 the bayesian framework represents a natural setup to account for model and parameter uncertainty however the dsge approach imposes a large number of restrictions on the data in the specific context of interest rate rules its ability to generate qualitative and robust assessments on monetary policy conduct appears problematic this article provides some new evidence on interest rate policies in five large economies united states united kingdom germany france and italy through the implementation of a time varying parameters approach tvp henceforth we estimate policy rules as summarized by simple reaction functions defined in terms of expected inflation and output gaps in contrast with most existing analyses we employ a tvp methodology based on the kalman filter algorithm to estimate our instrument rules in practice we allow the policy rules coefficients to vary over time what we obtain are estimates of the state vector for each observation in our sample these estimates can then describe the evolution of monetary policy over time moreover we evaluate the conditional variance of interest rates implied by our tvp methodology a host of factors may cause shifts in the estimated parameters of monetary policy reaction functions some of them may be due to institutional reforms like the introduction of inflation targets or the move to an exchange rate peg or a fixed exchange rate in estimating reaction functions defined in terms of final policy objectives one aims at capturing the relative emphasis placed by policymakers on the attainment of output and inflation targets over time such emphasis might evolve therefore one needs to model the observer s view on the likelihood that these shifts are smooth transitions or abrupt regime changes by allowing the weights of the policy rule to vary only gradually we are able to identify relevant shifts in policy conduct regardless of their exact configuration as argued at length in the next section our approach is better suited than conventional fixed parameter techniques to deal with lucas critique and more in general with the issue of structural change

the wealth effects of premium subsidies on moral hazard in insurance markets abstract insurance premium subsidies are present in many insurance markets the swiss government for example paid out chf 4 26 billion or 0 72 of the swiss gdp for health insurance premium subsidies in 2011 analyses of premium subsidies have often highlighted that the increased insurance demand due to premium subsidies increases the effects of moral hazard in the market other consequences of premium subsidies however have mostly been neglected by the literature we show in our theoretical model that the wealth effects of premium subsidies decrease the sensitivity of the insured towards the monetary consequences of losses this leads to less prevention efforts by the insured and thus increases moral hazard in the market the effect is preserved if the subsidy is financed through proportional taxation using two alternative models we show that providing state dependent subsidies can either increase or reverse this effect depending on which state subsidies are paid we argue that whether demand effects or wealth effects of premium subsidies will dominate the insured s behavior depends on the market structure

regime shifts and the stability of backward looking phillips curves in open economies abstract we assess the stability of open economy backward looking phillips curves estimated over two different exchange rate regimes we calibrate a new keynesian monetary policy model and employ it for producing artificial data a monetary policy break replicating the move from a target zone regime to a free floating regime implemented in sweden in 1992 is modeled we employ two different plausibly calibrated taylor rules to describe the swedish monetary policy conduct and fit a reduced form phillips curve to the artificial data while not rejecting the statistical relevance of the lucas critique we find that its economic importance does not seem to be overwhelming

inflation targeting as a monetary policy rule the purpose of the paper is to survey and discuss in ation targeting in the context of monetary policy rules the paper provides a general conceptual discussion of monetary policy rules attempts to clarify the essential characteristics of in ation targeting compares in ation targeting to other monetary policy rules and draws some conclusions for the monetary policy of the european system of central banks jel classi cation e42 e52

habit formation in consumption and its implications for monetary policy models this paper explores a monetary policy model with habit formation for consumers in which consumers utility depends in part on current consumption relative to past consumption the empirical tests developed in the paper show that one can reject the hypothesis of no habit formation with tremendous condence largely because the habit formation model captures the gradual hump shaped response of real spending to various shocks the paper then embeds the habit consumption specication in a monetary policy model and nds that the responses of both spending and inflation to monetary policy actions are signicantly improved by this modication jel d12 e52 e43

inflation forecast targeting implementing and monitoring inflation targets abstract inflation targeting is shown to imply inflation forecast targeting the central bank s inflation forecast becomes an explicit intermediate target inflation forecast targeting simplifies both implementation and monitoring of monetary policy the weight on output stabilization determines how quickly the inflation forecast is adjusted towards the inflation target money growth or exchange rate targeting is generally inferior than inflation targeting and leads to higher inflation variability commitment to target rules may be better than commitment to instrument rules

dynamic is curves with and without money an international comparison abstract when money is added to a dynamic is model evidence from six countries indicates that money growth usually helps predict the gdp gap and that the predictive power of a short term real interest is much weaker than previous work suggests thus for dynamic is models such as that used by rudebusch g d svensson l e o 1999 policy rules and inflation targeting in taylor j b ed monetary policy rules university of chicago press chicago pp 203 246 2002 eurosystem monetary targeting lessons from us data european economic review 46 417 442 the omission of money appears to come at a high cost

the un importance of forward looking behavior in price specifications the seminal work of edmund s phelps 1978 john b taylor 1980 and guillermo a calvo 1983 developed forward looking models of price determination that imparted inertia to the price level these models incorporate expectations of future prices and excess demand by imposing constraints typically lag lead symmetry constraints that force future variables to enter the specification in this paper the author tests the empirical significance of future prices in specifications like those of taylor he finds that expectations of future prices are empirically unimportant in explaining price and inflation behavior however the dynamics of a model that includes a purely backward looking inflation specification differ substantially and not altogether pleasingly from those with a forward looking specification copyright 1997 by ohio state university press

moral hazard and optimal commodity taxation abstract this paper demonstrates that in an economy with moral hazard and more than one commodity competitive equilibrium is not constrained efficient to correct the market failure differential commodity taxation is necessary a general optimal tax formula is derived and special cases of is discussed

inflation targeting some extensions previous analyses of the implementation of inflation targeting are extended to monetary policy responses to different shocks consequences of model uncertainty and effects of interest rate smoothing and stabilization model uncertainty output stabilization and interest rate stabilization or smoothing all call for a more gradual adjustment of the conditional inflation forecast toward the inflation target the conditional inflation forecast is the natural intermediate target during inflation targeting the optimal way of reacting to shocks is hence to check how they affect the inflation forecast and then take the appropriate action jel classification e42 e52 e58

testing for the lucas critique a quantitative investigation this thesis contains four essays which studies the macroeconomic effects of fiscal and monetary policy quantitatively the first essay investigates whether swedish postwar business cycles have been generated by domestic or foreign shocks and finds that they are about equally important in the second essay the effects of government budget deficits on interest rates in sweden are studied in a small open economy framework the empirical results which have high power due to very large swings in deficits and interest rates provide support that larger deficits produce higher interest rates and thus give support against the ricardian view the third essay seeks to identify optimal social insurance and redistribution levels in sweden and the u s with respect to temporary and permanent idiosyncratic productivity risks the results indicate that sweden should reduce the social security level while the u s should approximately maintain the current level in the last essay the small sample properties of a well known statistical test for the lucas critique the super exogeneity test is studied in a general equilibrium environment the results indicate that the super exogeneity test do not have sufficient power in small samples

monetary policy and the stability of macroeconomic relationships summary estimates of the effect of different international monetary regimes on the parameters of the phillips curve the keynesian consumption function and other reduced form macroeconomic relationships are given the estimates provide a quantitative assessment of the importance of the lucas critique for such regime shifts the estimates are calculated by stochastically simulating an estimated multicountry economic model with rational expectations under a fixed exchange rate regime and a flexible exchange rate regime in both regimes interest rates are the primary instrument of monetary policy noticeable shifts occur in most of the macroeconomic relationships especially in the consumption function and the phillips curve and these shifts have simple economic interpretations based on the changes in the variance and the serial correlation of income and prices in the two regimes however in most cases the shifts are not large quantitatively at least as implemented here this type of regime shift does not seem to generate much instability in the conventional macroeconomic relationships several possible reasons for this finding are discussed in the paper in this paper i plan to follow in a tradition pioneered by a w phillips almost 40 years ago phillips 1954 evaluated monetary and fiscal policy by examining the operating properties of simple policy rules in a fully specified economic model he did this by applying control theory ideas from the engineering literature by examining the performance of the model economy under different types of policy rules for example proportional derivative and integral rules he attempted to determine which policy rule would work well and which would not work well in practice following in the phillips tradition does not mean that i will use the same theoretical models econometric methods or computational techniques that phillips used to do so would in my view pass by fundamental developments in dynamic economic theory econometrics and solution procedures that have been achieved since the time that phillips wrote phillip s 1954 analysis was based on keynesian islm multiplier accelerator models that were popular in the early 1950s the policy evaluation i describe in this lecture differs from phillips s policy evaluation in several ways first it makes use of a dynamic rational expectations model with forward looking behaviour in consumption investment wage setting and interest rates second the model is international and exchange rate determination reflects the current high degree of international capital mobility which did not exist when phillips wrote third the model is empirically estimated most of phillips s work was based on simulation models with calibrated parameters fourth the simulations are done stochastically with an empirically

grade selection under uncertainty least cost last and other anomalies abstract grade selection rules for heterogeneous resource deposits with increasing marginal extraction costs are derived it is shown that contrary to the conventional wisdom it can be optimal to extract the least cost deposits last there are a number of rules that are compatible with dynamic profit maximization under certainty nevertheless none explains empirical regularities in actual extraction patterns when uncertainty about future price is introduced however the theoretical model conforms closely not only to observed grade selection patterns but also to observed mineral industry price paths

spectral welfare cost functions if preferences are not time separable economic agents care not only about the magnitude of fluctuations in consumption but also about the persistence and other temporal characteristics of those fluctuations this paper extends and develops the theory of spectral utility functions which measure utility frequency by frequency to illustrate the interaction between consumption volatility and time non separable preferences to highlight the economic implications of the interaction spectral welfare cost functions are developed to provide a quantitative measure of the importance to economic agents of the temporal delivery of consumption volatility

new keynesian economics and the phillips curve models with sticky prices are an important part of new keynesian economics the author shows that several of the new keynesian models imply a formulation that is similar to the expectations augmented phillips curve of milton friedman and edmund phelps he then presents new estimates of the new keynesian phillips curve the author uses two proxies for price expectations survey based measures and an econometric based measure originally developed by bennett mccallum 1976 overall the results are consistent with the model but the survey based results are more precise suggesting that the surveys may be better measures of actual expectations copyright 1995 by ohio state university press

forward looking behavior and optimal discretionary monetary policy abstract this paper derives a closed form solution for the optimal discretionary monetary policy in a model that allows for varying degrees of forward looking behavior we show that forward looking behavior can either attenuate or magnify the optimal policy response to inflation and the output gap depending on which part of the model economy is affected by expectations

assessing the lucas critique in monetary policy models empirical estimates of monetary policy rules suggest that the behavior of u s monetary policymakers changed during the past few decades however for that same time period statistical analyses of lagged representations of the economy such as vars often have not rejected the null of structural stability these two sets of empirical results appear to contradict the lucas critique this paper reconciles these results with the lucas critique by showing that the apparent policy invariance of reduced forms is consistent with the magnitude of historical policy shifts and the relative insensitivity of the reduced forms of plausible forward looking macroeconomic specifications to policy shifts

monetary policy trade offs and the correlation between nominal interest rates and real output the authors present a structural model of the u s economy that combines their price contracting specification with a term structure relationship an aggregate demand curve and a monetary policy reaction function the model matches important features of postwar data well and provides a structural explanation of the correlation between real output and the short term nominal rate of interest the authors perform a battery of monetary policy experiments that show that as viewed through the lens of this model monetary policy has struck a good balance recently among competing monetary policy objectives copyright 1995 by american economic association

double moral hazard and resale price maintenance incentives for resale price maintenance rpm are studied in a wholesaler retailer relationship in which both firms make a nonprice choice subject to moral hazard the best attainable contract has vertical externalities in both nonprice choices and the choice of consumers price if delegated to the retailer rpm controls the latter externality but interacts with the other externalities as well as a consequence either minimum or maximum vertical price fixing can be optimal in spite of a successive monopoly specification similar incentives exist for writing other variables into contract such as the capital input of the retailer

government relief for risk associated with government action a significant source of risk arises from uncertainty concerning future government policy government action tax reform deregulation judicial decisions budgetary shifts produces gains and losses for those who invested under preexisting rules the effects of government relief compensation grandfathering phase ins on ex ante incentives and risk bearing are examined using a model in which private insurance is available it is demonstrated that government relief is inefficient even when private insurance is subject to moral hazard because relief shields individuals from some of the effects of their actions i introduction a significant source of risk arises from uncertainty concerning future government action government action produces gains and losses for those who invested under preexisting rules government policy with regard to these effects transition policy varies widely full compensation for takings of real property in many jurisdictions partial relief through grandfathering and phase ins for tax reform and deregulation in some instances but not others and no relief for most budgetary shifts and

a macro finance model of the term structure monetary policy and the economy this paper develops and estimates a macro finance model that combines a canonical affine no arbitrage finance specification of the term structure with standard macroeconomic aggregate relationships for output and inflation from this new empirical formulation we obtain several interesting results 1 the latent term structure factors from finance no arbitrage models appear to have important macroeconomic and monetary policy underpinnings 2 there is no evidence of monetary policy inertia or a slow partial adjustment of the policy interest rate by the federal reserve and 3 both forward looking and backward looking elements play important roles in macroeconomic dynamics

flexible inflation targeting and financial stability is it enough to stabilize inflation and output abstract we investigate empirically whether a central bank can promote financial stability by stabilizing inflation and output and whether additional stabilization of asset prices and credit growth would enhance financial stability in particular we employ an econometric model of the norwegian economy to investigate the performance of simple interest rate rules that allow a response to asset prices and credit growth in addition to inflation and output we find that output stabilization tends to improve financial stability additional stabilization of house prices equity prices and or credit growth enhances stability in both inflation and output but has mixed effects on financial stability in general financial stability as measured by e g asset price volatility improves while financial stability measured by indicators that depend directly on interest rates deteriorates mainly because of higher interest rate volatility owing to a more active monetary policy

the role of the state in financial markets this paper reexamines the role of the state in financial markets and identifies seven major market failures that provide a potential rationale for government intervention in practice government interventions in capital markets even in industrial countries have been pervasive the paper provides a taxonomy of those interventions with respect to both the objectives they serve and the instruments they employ there is a role for the government in financial markets but the success of government interventions has been mixed it is important that interventions be well designed the paper sets out principles for government regulatory interventions and applies them to prudential regulation it then examines three other areas of intervention directed credit finanical repression and competition policy and identifies circumstances in which some amount of financial repression may actually be beneficial

term structure evidence on interest rate smoothing and monetary policy inertia abstract numerous studies have used quarterly data to estimate monetary policy rules or reaction functions that appear to exhibit a very slow partial adjustment of the policy interest rate the conventional wisdom asserts that this gradual adjustment reflects a policy inertia or interest rate smoothing behavior by central banks however such quarterly monetary policy inertia would imply a large amount of forecastable variation in interest rates at horizons of more than 3 months which is contradicted by evidence from the term structure of interest rates the illusion of monetary policy inertia evident in the estimated policy rules likely reflects the persistent shocks that central banks face

peer monitoring and credit markets a major problem for institutional lenders is ensuring that borrowers exercise prudence in the use of the funds so that the likelihood of repayment is enhanced one partial solution is peer monitoring having neighbors who are in a good position to monitor the borrower be required to pay a penalty if the borrower goes bankrupt peer monitoring is largely responsible for the successful financial performance of the grameen bank of bangladesh and of similar group lending programs elsewhere but peer monitoring has a cost it transfers risk from the bank which is in a better position to bear risk to the cosigner in a simple model of peer monitoring in a competitive credit market this article demonstrates that the transfer of risk leads to an improvement in borrowers welfare

eurosystem monetary targeting lessons from u s data abstract using a small empirical model of inflation output and money estimated on u s data we compare the relative performance of monetary targeting and inflation targeting the results show monetary targeting to be quite inefficient yielding both higher inflation and output variability this is true even with a nonstochastic money demand formulation our results are also robust to using a p model of inflation therefore in these popular frameworks there is no support for the prominent role given to money growth in the eurosystem s monetary policy strategy

a happy half way house medium term inflation targeting in new zealand abstract the 2002 policy targets agreement pta between the government and central bank of new zealand asks the central bank to target inflation over the medium term rather than over an annual target delegating such a medium term objective to the central bank shifts inflation targeting towards a halfway house between inflation targeting and price level targeting we show empirically that this helps time consistent policy approximate the first best commitment policy even when the government asks the central bank to weight output stabilisation differently to society we estimate the new zealand economy with a small open economy dsge model and show that the happiest halfway house is located around a two year averaging horizon at most which leads to mild improvements in monetary policy efficiency

has euro area inflation persistence changed over time this paper analyzes the stability over time of the econometric process for euro area inflation since 1970 focusing in particular on the behavior of the so called persistence parameter the sum of the coefficients on the lagged dependent variables perhaps surprisingly in light of the lucas critique our principal finding is that there appears to be relatively little instability in the parameters of the euro area inflation process full sample estimates of the persistence parameter are generally close to 1 and we fail to reject the hypothesis that this parameter has been stable over time we discuss how these results provide some indirect evidence against rational expectations models with strong forward looking elements such as the new keynesian phillips curve

the impact of a product harm crisis on marketing effectiveness product harm crises are among a firm s worst nightmares a firm may experience i a loss in baseline sales ii a reduced own effectiveness for its marketing instruments iii an increased cross sensitivity to rival firms marketing mix activities and iv a decreased cross impact of its marketing mix instruments on the sales of competing unaffected brands we find that this quadruple jeopardy materialized in a case study of an australian product harm crisis faced by kraft peanut butter we arrive at this conclusion by using a time varying error correction model that quantifies the consequences of this crisis on base sales and on own and cross brand short and long term effectiveness the proposed modeling approach allows managers to make more informed decisions on how to regain the brands pre crisis performance levels

is the fed too timid monetary policy in an uncertain world estimates of the taylor rule using historical data from the past decade or two suggest that monetary policy in the u s can be characterized as having reacted in a moderate fashion to output and in

the lucas critique and the stability of empirical models this paper re considers the empirical relevance of the lucas critique using a dsge sticky price model in which a weak central bank response to inflation generates equilibrium indeterminacy the model is calibrated on the magnitude of the historical shift in the federal reserve s policy rule and is capable of generating the decline in the volatility of inflation and real activity observed in u s data using monte carlo simulations and a backward looking model of aggregate supply and demand we show that shifts in the policy rule induce breaks in both the reduced form coefficients and the reduced form error variances the statistics of popular parameter stability tests are shown to have low power if such heteroskedasticity is neglected in contrast when the instability of the reduced form error variances is accounted for the lucas critique is found to be empirically relevant for both artificial and actual data

sharecropping and the interlinking of agrarian markets one of the often noted features of less developed agrarian economies is the existence of interlinkages among the land labor credit and product markets the landlord is often the supplier of credit he frequently purchases and markets the output of the tenant farmers and often sells raw materials and even consumption goods to his tenant farmers how can this phenomenon be explained what are the welfare consequences of attempts to restrict these practices which often seem to constitute restraints on free trade these are the questions to which this paper is addressed a general set of arguments applicable to both competitive and noncompetitive environments are presented to situations where all the terms of the contract are determined in an optimal way as well as to situations where many of the terms are specified institutionally section i examines interlinked credit and tenancy contracts section ii examines interlinked marketing and tenancy contracts section iii points out the possible interlinking between labor contracts and consumption goods markets and section iv presents the different equilibrium frameworks discussed in the paper such as monopoly monopsony competition and equilibria with surplus labor

optimal monetary policy using an unrestricted var this paper proposes a simple benchmark for monetary policy assuming the true model of the economy is unknown it is based on an unrestricted vector autoregression var the key result is that instead of deriving optimal policy using the original var equations as the constraint when no restriction is placed on the correlation structure of the var disturbances the constraint should be formed from a transformation of the var this method is applied to the usa 1964 2009 significant welfare gains are found compared with actual policy and using a taylor rule incorporating a zero interest rate lower bound lowers output and inflation

expectation horizon and the phillips curve the solution to an empirical puzzle estimates of the slope of the phillips curve reported in the literature cover a range from roughly 0 6 to zero depending on specification forward looking specifications favored by theory produce the smallest slope estimates this paper addresses this puzzle by studying the bivariate process of inflation and unemployment in a fairly general unobserved components framework allowing for stochastic trends and related cycles analysis reveals that the slope of the implied phillips curve will depend critically on the horizon of the forward looking inflation expectation provided the cyclical component of unemployment is highly persistent empirical analysis results show that is the case suggesting that the choice of expectation horizon generally set at one quarter in the new keynesian literature may play an important role in this debate copyright 2007 john wiley sons ltd

bayesian counterfactual analysis of the sources of the great moderation we use counterfactual experiments to investigate the sources of the large volatility reduction in us real gdp growth in the 1980s contrary to an existing literature that conducts counterfactual experiments based on classical estimation and point estimates we consider bayesian analysis that provides a straightforward measure of estimation uncertainty for the counterfactual quantity of interest using blanchard and quah s 1989 structural var model of output growth and the unemployment rate we find strong statistical support for the idea that a counterfactual change in the size of structural shocks alone with no corresponding change in the propagation of these shocks would have produced the same overall volatility reduction as what actually occurred looking deeper we find evidence that a counterfactual change in the size of aggregate supply shocks alone would have generated a larger volatility reduction than a counterfactual change in the size of aggregate demand shocks alone we show that these results are consistent with a standard monetary var for which counterfactual analysis also suggests the importance of shocks in generating the volatility reduction but with the counterfactual change in monetary shocks alone generating a small reduction in volatility copyright 2007 john wiley sons ltd

do measures of monetary policy in a var make sense no in many vector autoregressions vars monetary policy shocks are identified with the least squares residuals from a regression of the federal funds rate on an assortment of variables such regressions appear to be structurally fragile and are at odds with other evidence on the nature of the u s federal reserve s reaction function furthermore the residuals from these regressions show little correlation across various vars or with funds rate shocks that are derived from forward looking financial markets my results provide a sharp critique of current monetary vars

a time varying natural rate of interest for the euro area abstract we estimate a time varying natural rate of interest tvnri for a synthetic euro area over the period 1979q1 2004q4 using a small macroeconomic model broadly following a methodology developed by laubach and williams 2003 measuring the natural rate of interest the review of economics and statistics 85 4 1063 1070 for the united states the kalman filter simultaneously estimates the output gap and the natural rate of interest our identifying assumptions include a close relationship between the tvnri and the low frequency fluctuations of potential output growth the difference between the real rate of interest and its estimated natural level offers valuable insights into the monetary policy stance over the last two decades and a half

recent changes in macro policy and its effects some time series evidence has the macroeconomic policy regime changed in the united states in the last few years if so has this change had an effect on macroeconomic relationships and in particular on the relationship between inflation and unemployment these two questions have been on the minds of most macroeconomists since the october 1979 switch from interest rates to reserves as an intermediate target for the federal reserve and the explicit endorsement of monetarism by the reagan administration in early 1981 the questions are important not only for predicting the course of the economy in the future but also for assessing the practical significance of the lucas critique according to this critique a change in policy regime should cause changes in the way the economy operates comparing economic relations before and after a change in regime should provide a test of the critique the approach in many recent studies has been to assume that the answer to the first question is yes that there has been a significant change in the macroeconomic policy regime and to look for changes in the phillips curve as a test of the lucas critique thus far the results have been mixed otto eckstein 1983 steven englander and cornelis los 1983 and george perry 1983 conclude that there has been no significant change in the phillips curve relationship phillip cagan and william fellner 1983 and wayne vroman 1983 find some evidence of a change wage inflation has come down more quickly especially in 1982 and early 1983 than would be predicted from a phillips curve however the assumption that there has been a regime change has received little empirical attention the october 1979 switch from interest rate targetting to reserve targetting at the fed is usually taken as prima facie evidence of a significant change in policy regime but such changes in operating procedures per se do not necessarily entail a change in policy regime relevant for macroeconomic purposes if they did then the renewed emphasis on interest rates rather than reserves starting in late 1982 should be cited as evidence of a return to the old regime a view which few researchers have taken in fact studies have shown that either interest rates or reserves can be used as intermediate targets for controlling the money supply and ultimately aggregate demand the choice between the two depends on whether shocks to the money markets are from the demand side or the supply side the issue of importance for assessing whether a regime change has taken place is how much the fed reacts by adjusting the money supply appropriately defined in response to conditions in the economy the procedure it uses to bring about this response is irrelevant 2 implicit in a macroeconomic policy regime is a rule relating the money supply to economic con 404 woodrow wilson school princeton university princeton nj 08544 this research was supported by a grant from the national science foundation at the national bureau of economic research and conducted in part at the federal reserve bank of philadelphia i am grateful to steve fries for research assistance and to steven englander and comelis los for comments on an earlier draft see robert lucas 1976 william fellner s 1978 credibility hypothesis is similar to the lucas critique in this context and has been tested in similar ways 2some have argued that for political reasons by focusing on reserves the fed would be able to let interest rates go higher than under interest rate targetting with reserve targetting fed officials could shift the blame for high interest rates elsewhere

in praise of frank ramsey s contribution to the theory of taxation frank ramsey s brilliant 1927 paper modestly entitled a contribution to the theory of taxation is a landmark in the economics of public finance nearly a half century later through the work of diamond and mirrlees 1971 and mirrlees 1971 his paper can be thought of as launching the field of optimal taxation and revolutionising public finance ramsey f p 1927 a contribution to the theory of taxation economic journal vol 37 145 pp 47 61

accounting for a shift in term structure behavior with no arbitrage and macro finance models this paper examines a shift in the dynamics of the term structure of interest rates in the u s during the mid 1980s we document this shift using standard interest rate regressions and using dynamic a ne no arbitrage models estimated for the pre and post shift subsamples the term structure shift largely appears to be the result of changes in the pricing of risk associated with a level factor using a macro nance model we suggest a link between this shift in term structure behavior and changes in the dynamics and risk pricing of the federal reserve s in ation target as perceived by investors

reaching inflation stability inflation volatility has significantly declined over the last 20 years in the u s to find out why i follow a structural approach i estimate a complete new keynesian model which imposes cross equation restrictions on the time series of inflation the output gap and the interest rate i perform counterfactual analysis with two commonly used measures of inflation consumer price index cpi and gross domestic product deflator gdpd while the change in the propagation mechanism of the economy induced most of the cpi volatility drop it played a smaller role in the reduction of gdpd volatility our maximum likelihood estimates imply that the most important factor behind the drop in inflation volatility was the more forward looking price setting behavior of the 1980s and 1990s