private bills a theoretical and empirical study of lobbying interest groups lobby over a variety of issues includingprivate bills there are two striking facts about privatebills introduced in the u s congress first several scandalshave involved congressmen who were being bribed to introduce aprivate bill second the number of private bills introducedhas drastically changed over time a theoretical model and aneconometric model are developed to explain these phenomena

tracking the new economy using growth theory to detect changes in trend productivity abstract the acceleration of productivity after 1995 prompted a debate over whether the economy s underlying growth rate would remain high in this paper we draw on growth theory to identify variables other than productivity namely consumption and labor compensation to help estimate trend productivity growth we treat that trend as a common factor with two regimes high and low growth our analysis picks up striking evidence of a return in 1997 to the high growth regime nearly 25 years after a switch from high to low growth we find that both the common factor and regime switching aspects of the model are important for identifying changes in trend productivity and also show that the trend breaks are more difficult to detect with per capita as opposed to per hour based data because of persistent labor supply shifts finally we argue that our methodology is effective in detecting changes in trend in real time in the case of the 1990s the methodology would have signaled the regime switch by 1999 or within roughly six quarters of when it occurred according to the full sample

macroeconomic volatility and external imbalances abstract does macroeconomic volatility uncertainty affects accumulation of net foreign assets in oecd economies over the period 1970 2012 changes in country specific aggregate volatility are after controlling for a wide array of factors significantly positively associated with net foreign asset position a standard open economy model with time varying macroeconomic uncertainty can quantitatively account for this relationship the key mechanism is precautionary motive more uncertainty induces residents to save more and higher savings are in part channeled into foreign assets data and theory suggest that volatility is an important determinant of the medium long run evolution of external imbalances in developed countries

a new perspective on the new rule of the current account abstract in an influential series of contributions kraay and ventura 2000 2003 offer a new rule for the current account in response to a temporary income shock the change in the current account is equal to the change in saving times the ratio of net foreign assets to wealth we analyze the impact of a temporary income shock on the current account in the context of a two country dynamic general equilibrium model of portfolio choice and show that the new rule does not hold we also show that the cross section evidence reported by kraay and ventura in favor of the new rule is a feature implied by the steady state of the model that is conceptually distinct from the new rule we argue that the new rule could only hold in a model with one way capital flows only inflows or outflows but not both a feature that is strongly counterfactual

home bias in global bond and equity markets the role of real exchange rate volatility abstract this paper focuses on the role of real exchange rate volatility as a driver of portfolio home bias and in particular as an explanation for differences in home bias across financial assets we present a markowitz type portfolio selection model in which real exchange rate volatility induces a bias towards domestic financial assets as well as a stronger home bias for assets with low local currency return volatility we find empirical support in favour of this hypothesis for a broad set of industrialized and emerging market countries not only is real exchange rate volatility an important factor behind bilateral portfolio home bias but we find that a reduction of monthly real exchange rate volatility from its sample mean to zero reduces bond home bias by up to 60 percentage points while it reduces equity home bias by only 20 percentage points

can information heterogeneity explain the exchange rate determination puzzle empirical evidence shows that most exchange rate volatility at short to medium horizons is related to order flow and not to macroeconomic variables we introduce symmetric information dispersion about future macroeconomic fundamentals in a dynamic rational expectations model in order to explain these stylized facts consistent with the evidence the model implies that a observed fundamentals account for little of exchange rate volatility in the short to medium run b over long horizons the exchange rate is closely related to observed fundamentals c exchange rate changes are a weak predictor of future fundamentals and d the exchange rate is closely related to order flow

rational asset price movements without news this paper argues that an important part of movements in asset prices may be caused by neither external news nor irrationality but by the revelation of information by the trading process itself two models are developed that illustrate this general idea one model is based on investor uncertainty about the quality of other investors information the other is based on dispersion of information and small costs to trading the analysis is used to suggest a possible rational explanation of the october 1987 crash copyright 1993 by american economic association

news noise and fluctuations an empirical exploration a common view of the business cycle gives a central role to anticipations consumers and firms continuously receive information about the future which is sometimes news and sometimes just noise based on this information consumers and firms choose spending and because of nominal rigidities spending affects output in the short run if ex post the information turns out to be news the economy adjusts gradually to a new level of activity if it turns out to be just noise the economy returns to its initial state therefore the dynamics of news and noise generate both short run and long run changes in aggregate activity this view appears to capture many of the aspects often ascribed to fluctuations the role of animal spirits in affecting demand spirits coming here from a rational reaction to information about the future the role of demand in affecting output in the short run together with the notion that in the long run output follows a natural path determined by fundamentals in this paper we examine whether this view is consistent with the data we reach three main conclusions the first two methodological the third substantive structural vars typically cannot recover news and noise shocks the reason is straightforward if agents face a signal extraction problem and are unable to separate news from noise then the econometrician faced with either the same data as the agents or a subset of these data cannot do it either while structural estimation methods cannot recover the actual time series for news and noise shocks either they can recover underlying structural parameters and thus the relative role and dynamic effects of news and noise shocks estimation of both a simple model and then of a more elaborate dsge model suggest that agents indeed solve such a signal extraction problem and that noise shocks play an important role in determining short run dynamics recent efforts to estimate business cycle models in which expectations about the future play an important role include christiano et al 2010 and schmitt grohe and uribe 2012 those papers follow the approach of jaimovich and rebelo 2009 and model news as perfectly anticipated productivity changes that will occur at

country portfolio dynamics this paper presents a general approximation method for characterizing timevarying equilibrium portfolios in a two country dynamic general equilibrium model the method can be easily adapted to most dynamic general equilibrium models it applies to environments in which markets are complete or incomplete and it can be used for models of any dimension moreover the approximation provides simple easily interpretable closed form solutions for the dynamics of equilibrium portfolios

fickle capital flows and retrenchment evidence from bilateral banking data abstract we empirically examine the response of cross border capital flows to economic uncertainty using bilateral banking flow data we show that while banks reduce their exposure to a foreign country when it becomes more risky they tend to increase their exposure to their home country in bad times a retrenchment to further understand this puzzle we examine how the differential response to foreign and domestic uncertainty is affected by country specific characteristics bilateral characteristics and crises our analysis suggests that most of the current theories based on either information asymmetries between foreign and domestic investors or institutional risk cannot explain bilateral data well on the other hand our results show that global crises have an asymmetric impact on the risk attitudes of banking institutions towards country specific uncertainty global crises make investors more risk averse towards foreign uncertainty but have no effect on the responsiveness to domestic uncertainty

the determinants of cross border equity flows abstract we explore a new panel data set on bilateral gross cross border equity flows between 14 countries 1989 1996 we show that a gravity model explains international transactions in financial assets at least as well as goods trade transactions gross transaction flows depend on market size in source and destination country as well as trading costs in which both information and the transaction technology play a role distance proxies some information costs and other variables explicitly represent information transmission an information asymmetry between domestic and foreign investors and the efficiency of transactions the geography of information is the main determinant of the pattern of international transactions while there is weak support in our data for the diversification motive once we control for the informational friction we broaden the scope of our results by presenting some evidence linking the results on equity transactions to equity holdings

bureaucratic discretion or congressional control regulatory policymaking by the federal trade commission this paper extends stigler and peltzman s approach to regulation by incorporating a legislature the model yields comparative statics results and hence testable implications the paper then tests between two opposing approaches about regulatory agency behavior the first assumes agencies operate independently of the legislature and hence exercise discretion the second assumes that congress controls agency decisions the recent behavior of the federal trade commission provides the empirical setting substantial evidence is found for the specific predictions of the model including the hypothesis of systematic congressional influence over ftc decisions

solving dsge portfolio choice models with dispersed private information abstract noisy rational expectations models in which agents have dispersed private information and extract information from an endogenous asset price are widely used in finance however these linear partial equilibrium models do not fit well in modern macroeconomics that is based on non linear dynamic general equilibrium models we develop a method for solving a dsge model with portfolio choice and dispersed private information we combine and extend existing local approximation methods applied to public information dsge settings with methods for solving noisy rational expectations models in finance with dispersed private information

money for nothing politicians rent extraction and political extortion introduction the model 1 background the economic theory of regulation 2 rent extraction the theory of political extortion demonstrations 3 observing extortion the practice of rent extraction 4 validating the model empirical tests of rent extraction 5 contracting for rent preservation the durability problem extensions 6 extraction and optimal taxation excises earmarked taxes and government user charges 7 costs and benefits of interest group organization 8 improving the model worthy yet unanswered questions notes references index

international capital flows under dispersed private information abstract it is well established that private information is critical to our understanding of asset prices in this paper we argue that it also affects international capital flows and use a simple two country dsge model to illustrate its impact we show that private information i increases the volatility of both net and gross capital flows ii leads to a high correlation between capital inflows and outflows iii leads to a disconnect of capital flows from observed macro fundamentals and iv implies that capital flows contain information about the future macro fundamentals we also show that dispersed information affects capital flows both through asset prices and directly so that the impact on flows is not just the mirror image of the impact on prices

equilibrium political budget cycles political business cycle theories generally rely on nominal rigidities and voter myopia this paper offers an equilibrium theory that preserves some basic insights from earlier models though with significant refinements the political budget cycle emphasized here is in fiscal policy rather than output and inflation it arises via a multidimensional signal process one can consider the welfare implications of proposals to mitigate the cycle and the effects of altering the electoral structure copyright 1990 by american economic association

explaining saving investment correlations national saving and investment rates are highly positively correlated in virtually all countries this is puzzling as it apparently implies a low degree of international capital mobility this paper shows that the observed positive correlation between national saving and investment rates arises naturally within a quantitatively restricted equilibrium model with perfect mobility of financial and physical capital the model is consistent with the fact that saving investment correlations are larger for larger countries but are still substantial for small countries further the model is consistent with the finding that current account deficits tend to be associated with investment booms copyright 1993 by american economic association

can news be a major source of aggregate fluctuations a bayesian dsge approach we examine whether the news shocks as explored in beaudry and portier 2004 can be a major source of aggregate fluctuations for this purpose we extend a dynamic stochastic general equilibrium model a la christiano eichenbaum and evans 2005 by allowing news shocks on the total factor productivity and estimate the model using bayesian methods estimation results on the japanese and u s economies show that 1 the news shocks play an important role in business cycles 2 a news shock with a longer forecast horizon has larger effects on nominal variables and 3 the overall effect of the total factor productivity on hours worked becomes ambiguous in the presence of news shocks

international capital flows external assets and output volatility abstract cross sectional evidence for 119 developing emerging and developed countries shows over the last three decades that countries with an on average higher volatility of output growth experience more procyclical capital outflows over the business cycle than those countries with the same growth rate but a more stable output path this stylized pattern shows up in addition to the recently established fact that countries with higher macroeconomic uncertainty tend to accumulate higher external asset positions to explain this finding we present an open economy real business cycle model with stochastic growth rates in which higher uncertainty of the expected income stream increases the precautionary savings of households we show that the combination of income risk and the precautionary savings motive leads to both more procyclical capital outflows in the shorter run and a higher long run external asset position

the expectations driven us current account during the 1990s and 2000s survey expectations of long run output growth for the u s relative to the rest of the world were highly correlated with the u s current account and thus with global imbalances we show that this finding is to a large extent predicted by a two region stochastic growth model simulated using expected trend growth based on surveys in line with the intertemporal approach to the current account a major part of the buildup and subsequent reversal of the u s current account de cit appears to be consistent with an optimal response of households and firms to changing growth prospects this article is protected by copyright all rights reserved

on the consequences of demographic change for rates of returns to capital and the distribution of wealth and welfare in the industrialized world the population is aging over time reducing the fraction of the population in working age consequently labor is expected to be scarce relative to capital with an ensuing decline in the real return on capital this paper uses demographic projections together with a large scale multi country overlapping generations model with uninsurable idiosyncratic uncertainty to quantify the distributional and welfare consequences of these changes in factor prices induced by the demographic transition in our model capital can freely flow between different regions in the oecd the u s the eu and the rest of the oecd thus international capital flows may in principle mitigate the decline in rates of returns one would expect in the u s if it were a closed economy we find exactly the opposite in the u s as an open economy rates of return are predicted to decline by 86 basis points between 2005 and 2080 if the u s were a closed economy this decline would amount to only 78 basis points this result is due to the fact that other regions in the oecd will age even more rapidly therefore the u s is importing the more severe aging problem from these regions especially europe a similar conclusion is reached if we let capital flow freely between the oecd and the rest of the world row while row currently has a younger population structure it is predicted to age even more severely in the next decades giving rise to an even more pronounced decline in world rates of return to capital in order to evaluate the welfare consequences of the demographic transition we ask the following hypothetical question suppose a household economically born in 2005 would live through the economic transition with changing factor prices induced by the demographic change but keeping her own survival probabilities constant at their 2005 values how would its welfare have changed relative to a situation without a demographic transition we find that households experience significant welfare losses due to the demographic transition in the order of 2 5 of consumption depending on their initial productivity level and the design of the pension system these losses are mainly due to the fact that lower future returns to capital make it harder for households to save for retirement on the other hand if the oecd suddenly opens up to row in 2005 and row has higher returns to capital before the world capital market integration then these losses are reduced to 1 5 2 5

profitable informed trading in a simple general equilibrium model of asset pricing we present a simple general equilibrium model of asset pricing in which profitable informed trading can occur without any noise added to the model we use an equilibrium concept similar to rational expectations equilibrium but which explicitly allows for the possibility of adverse selection we show that models of profitable informed trading must restrict the portfolio choices of uninformed traders in particular they cannot buy the market portfolio in this model profitable informed trading lowers the welfare of all agents when compared across steady states journal of economic literature classification numbers g14 d50 d60 d82

international equity flows and returns a quantitative equilibrium approach this paper models trading by foreign and domestic investors in developed country equity markets the key assumptions are that i both the foreign and domestic investor populations contain investors of different sophistication and ii investor sophistication matters for performance in both public equity and private off market investments a quantitative model with these assumptions delivers a unified explanation for three stylized facts about us investors international equity trades that have been documented in the literature i trading by us investors occurs in bursts of simultaneous buying and selling ii americans build and unwind foreign equity positions gradually and iii us investors increase their market share in a country when stock prices there have recently been rising

campaign contributions as investments the u s house of representatives 1980 1986 this paper treats the market for special interest campaign contributions and political favors as a simple asset market the model yields a simple equilibrium relationship among three variables the total amount of investor contributions a candidate receives the monetary value of the favors he has promised and his probability of winning using data on open seat races for the u s house of representatives i confront the model with a series of tests despite the starkness of the model the results of these tests are highly supportive

what can survey forecasts tell us about information rigidities a lot we derive common and conflicting predictions from models in which agents face information constraints and then assess their validity using surveys of consumers firms central bankers and professional forecasters we document that mean forecasts fail to completely adjust on impact to shocks leading to statistically and economically significant deviations from the null of full information the dynamics of forecast errors after shocks are consistent with the predictions of models with information rigidities the conditional responses of forecast errors and disagreement among agents can also be used to differentiate between some of the most prominent models of information rigidities

consumer misperceptions uncertain fundamentals and the business cycle abstract this paper estimates the importance of shocks to consumer misperceptions noise shocks for u s business cycle fluctuations i embed imperfect information as in lorenzoni 2009 into a smets and wouters 2007 type dsge model agents only observe aggregate productivity and a signal about the permanent component contaminated with noise based on this information agents form beliefs about the temporary and the permanent component of productivity shocks to the signal noise shocks trigger aggregate fluctuations unrelated to changes in productivity bayesian estimation shows that noise shocks explain up to 14 percent of output and up to 25 percent of consumption fluctuations nominal rigidities and the specification of the monetary policy rule are crucial for the importance of noise shocks these features help to resolve conflicting results in the previous literature

information immobility and the home bias puzzle many argue that home bias arises because home investors can predict home asset payoffs more accurately than foreigners can but why does global information access not eliminate this asymmetry we model investors endowed with a small home information advantage who choose what information to learn before they invest surprisingly even when home investors can learn what foreigners know they choose not to investors profit more from knowing information others do not know learning amplifies information asymmetry the model matches patterns of local and industry bias foreign investments portfolio outperformance and asset prices finally we propose new avenues for empirical research

globalization and the increasing correlation between capital inflows and outflows abstract the correlation between capital inflows and outflows has increased substantially over time in a sample of 127 advanced and developing countries we provide evidence that this is a result of an increase in financial globalization stock of external assets and liabilities this dominates the effect of an increase in trade globalization exports plus imports which reduces the correlation between capital inflows and outflows in the context of a two country model with 8 shocks we show that the theoretical impact of financial and trade globalization on the correlation between capital inflows and outflows is consistent with the data

a structural decomposition of the u s trade balance productivity demographics and fiscal policy abstract the us external deficits have been the most striking manifestation of global imbalances this paper investigates the contribution of productivity growth demographics and fiscal policy in accounting for the evolution of the us external imbalances against industrialized countries during the last three decades productivity growth plays a dominant role demographics explain a non negligible and nearly permanent component of the us trade deficit furthermore the international demographic transition is crucial for large us external imbalances to be consistent with the persistent decline of world real interest rates observed in the data fiscal policy is of minor importance

inflation interest rates and the balance of payments during a financial reform the case of argentina abstract in order to evaluate the impact of recent financial reforms on the argentine economy this paper presents the results of estimating a small monthly structural model of the argentine economy which emphasizes the linkages between the financial system inflation and the balance of payments the results are used to examine the portfolio interest rate elasticities of both the financial and non financial sectors the determinants of the real levels of and spread between the loan and deposit interest rates and the responsiveness of inflation and the balance of payments to various policy measures

a quantitative assessment of the decline in the u s current account low frequency changes in the u s current account can be understood in terms of the influence of differences in productivity growth rates across time and across countries using standard growth theory in particular the secular decline is primarily driven by the increase in the u s tfp growth rate relative to its trading partners differences in population growth rates or fiscal policy have no significant effects on the low frequency changes in the u s current account

a scapegoat model of exchange rate fluctuations while empirical evidence finds only a weak relationship between nominal exchange rates and macroeconomic fundamentals forex markets participants often attribute exchange rate movements to a macroeconomic variable the variables that matter however appear to change over time and some variable is typically taken as a scapegoat for example the current dollar weakness appears to be caused almost exclusively by the large current account deficit while its previous strength was explained mainly by growth differentials in this paper we propose an explanation of this phenomenon in a simple monetary model of the exchange rate with noisy rational expectations where investors have heterogeneous information on some structural parameter of the economy in this context there may be rational confusion about the true source of exchange rate fluctuations so that if an unobservable variable affects the exchange rate investors may attribute this movement to some current macroeconomic fundamental we show that this effect applies only to variables with large imbalances the model thus implies that the impact of macroeconomic variables on the exchange rate changes over time this abstract was borrowed from another version of this item

reserve requirements and capital flows in latin america abstract the experience of a number of central banks in emerging economies indicates that capital flows can pose a dilemma for example raising policy rates can attract more capital inflows by raising deposit rates it has been suggested however that raising reserve requirements instead of the policy rate can address this dilemma as deposit rates will not necessarily increase even if lending rates rise to investigate this possibility this paper examines how banks adjust loan and deposit rates in response to changes in reserve requirements we use data on 97 banks from five latin american countries over the period 2000 14 our results indicate that higher reserve requirements are associated with lower deposit rates whereas loan rates remain unchanged during normal times and increase during periods of large capital inflows reserve requirements may therefore be a way to mitigate the dilemma posed by capital inflows in some latin american economies

news driven business cycles insights and challenges there is a widespread belief that changes in expectations may be an important independent driver of economic fluctuations the news view of business cycles offers a formalization of this perspective in this paper we discuss mechanisms by which changes in agents information due to the arrival of news can cause business cycle fluctuations driven by expectational change and we review the empirical evidence aimed at evaluating their relevance in particular we highlight how the literature on news and business cycles offers a coherent way of thinking about aggregate fluctuations while at the same time we emphasize the many challenges that must be addressed before a proper assessment of the role of news in business cycles can be established jel d83 d84 e13 e32 o33

international capital flows abstract the surge in international asset trade since the early 1990s has lead to renewed interest in models with international portfolio choice we develop the implications of portfolio choice for both gross and net international capital flows in the context of a simple two country dynamic stochastic general equilibrium dsge model we focus on the time variation in portfolio allocation following shocks and resulting capital flows endogenous time variation in expected returns and risk which are the key determinants of portfolio choice affect capital flows in often subtle ways the model is consistent with a broad range of empirical evidence an additional contribution of the paper is to overcome the technical difficulty of solving dsge models with portfolio choice by developing a broadly applicable solution method

an exploration into pigou s theory of cycles abstract this paper explores a theory of business cycles in which recessions and booms arise due to difficulties encountered by agents in properly forecasting the economy s future needs in terms of capital the idea has a long history in the macroeconomic literature as reflected by the work of pigou industrial fluctuation macmillan london 1926 the contribution of this paper is twofold first we illustrate the type of general equilibrium structure that can give rise to such phenomena second we examine the extent to which such a model can explain the observed pattern of u s recessions frequency depth without relying on technological regress we argue that such a model offer a framework for understanding elements of both the recent u s recession and of the asia downturns of the late 1990s

models of financially repressed developing economies abstract the past decade has witnessed an explosion of research on financial sector models of financially repressed developing economies for the most part financial repression is interpreted to be the technique of holding interest rates particularly deposit rates of interest below their free market equilibrium levels the recent spate of activity in this field was produced by the simultaneous publication in 1973 of books by mckinnon and shaw both authors demonstrate how economic theory can be applied to the analysis of the effects of financial conditions on investment and the real rate of economic growth since 1973 models of financially repressed developing economies have been formalized mathematically extended to open economies in order to analyse exchange rate policies and tested empirically this paper presents a critical survey of the major contributions to the literature in this field since 1973

home biased expectations and macroeconomic imbalances in a monetary union abstract under monetary union economic dynamics may diverge across countries due to regional inflation differentials and a pro cyclical real interest rate channel yet stability is generally ensured through endogenous adjustment of the real exchange rate the speed of adjustment depends inter alia on the way agents form expectations we propose a model in which agents expectations are largely based on domestic variables and less so on foreign variables we show that such home bias in expectations strengthens the real interest rate channel and causes country specific shocks to generate larger and more prolonged macroeconomic imbalances

a model of competitive stock trading volume a model of competitive stock trading is developed in which investors are heterogeneous in their information and private investment opportunities and rationally trade for both informational and noninformational motives i examine the link between the nature of heterogeneity among investors and the behavior of trading volume and its relation to price dynamics it is found that volume is positively correlated with absolute changes in prices and dividends i show that informational trading and noninformational trading lead to different dynamic relations between trading volume and stock returns

incumbent behavior vote seeking tax setting and yardstick competition this paper develops a model of the political economy of tax setting in a multijurisdictional world where voters choices and incumbent behavior are determined simultaneously voters are assumed to make comparisons between jurisdictions to overcome political agency problems this forces incumbents into a yardstick competition in which they care about what other incumbents are doing we provide a theoretical framework and empirical evidence using u s state data from 1960 to 1988 the results are encouraging to the view that vote seeking and tax setting are tied together through the nexus of yardstick competition

national and international aspects of financial policies in ldcs a prologue after a period of animated controversy between keynesians advocating policies of low interest rates and monetary expansion and monetarists who insisted on the importance of the distinction between nominal and real interest rates economists have now almost reached a consensus on the role of money in the development process this consensus has arisen because it was increasingly felt that what was called for was not new concepts so much as new ways of looking at them in ldcs money s role need be neither denigrated nor exaggerated money s traditional functions as a medium of exchange and a store of value remain important in ldcs but its function as a conduit of resources from savers to investors is more central to an inderstanding of its contributions to development coats and khatkhate 1980 p 3 the body of the consensus derives from the framework set up by mckinnon and shaw fleshed out by the earlier work of goldsmith and patrick goldsmith 1969 patrick 1966 and extended by the theoretical and empirical output of a large number of younger economists fry 1981 this analysis attached central importance to financial policies of higher real interest rates which were supposed to encourage the build up of real money balances increased financial intermediation and unification of financial markets eventually such a policy would lead to the efficient utilization of resources and particularly of scarce capital this new paradigm has contributed to an improved understanding and perception of the economies of ldcs their problems and how these problems are accentuated by distortions arising from interventionist policies for a while it was believed that the programme contained the secret of how to reconcile stabilization objectives with those of development roe 1982 however the accumulation of empirical evidence on several developing countries where the prescribed set of policies was adopted has raised doubts about the validity of this conclusion in the presence of distortions in the financial markets it is no doubt a sensible policy to raise real interest rates the problematic issue is how far to go raising real interest rates without any regard for the rates of return on investment may run counter to the requirements of development to argue that once funds are generated through the accumulation of real balances investment can take care of itself ignores the very dynamics of development thus the hiatus between stabilization and development has not really been bridged this is evident from the recent concern with supply side policies rather than demand management policies a dichotomy which parallels the distinction between the stabilization and development problems it is this dual distinction which provides the theme of this special issue of world development

learning and shifts in long run productivity growth abstract an extensive literature has analyzed the macroeconomic effects of shocks to the level of aggregate productivity however there has been little corresponding research on sustained shifts in the growth rate of productivity in this paper we examine the effects of shocks to productivity growth in a dynamic general equilibrium model where agents do not directly observe whether shocks are transitory or persistent we show that an estimated kalman filter model using real time data describes economists long run productivity growth forecasts in the united states extremely well and that filtering has profound implications for the macroeconomic effects of shifts in productivity growth

global imbalances globalization demography and sustainability if you sum up the current account deficits of all nations that are running deficits in the world economy the u s deficit accounts for about 70 percent of the total in any country s national accounts it will hold true as an identity that the current account deficit the excess of payments m to the rest of the world for goods services investment income and unilateral transfers over receipts x from the rest of the world for similar items exactly equals apart from measurement errors which may be substantial the excess of aggregate expenditure e for goods and services over national output y which in turn equals the excess of investment i over savings both public t g and private s in symbols

risk versus ambiguity and international security design abstract we study portfolio allocation and characterize contracts issued by firms in the international financial market when investors exhibit ambiguity aversion and perceive ambiguity in assets issued in foreign locations increases in the variance of their risky production process cause firms to issue assets with a higher variable payment equity hikes in investors perceived ambiguity have the opposite effect and lead to less risk sharing entrepreneurs from capital scarce countries finance themselves relatively more through debt than equity they are thus exposed to higher volatility per unit of consumption the expected returns on capital invested in capital scarce countries may also be lower such results do not hold in the absence of ambiguity that is when investors only perceive risk new facts uncovered from cross country firm level data are consistent with our model

market liquidity hedging and crashes in the absence of significant news hedging strategies were blamed for the stock market crash of october 1987 but traditional models cannot explain how a relatively small amount of selling could cause so large a price drop the authors develop a rational expectations model in which prices play an important role in shaping expectations markets are much less liquid in their model than in traditional models discontinuities or crashes can occur even with relatively little hedging the model is consistent with theories as disparate as keynes beauty contest insights and thom s catastrophe analysis and suggests means to reduce volatility copyright 1990 by american economic association

stock market wealth and consumption this paper explores the link between changes in the aggregate value of corporate stock and changes in consumer spending it presents data on the distribution of corporate stock ownership based on the 1998 survey of consumer finances it also uses time series evidence on the comovement of stock market wealth and various categories of consumer spending to calibrate the wealth effect it concludes that in the year after a change in stock market values consumer spending is likely to rise by between one and two cents for each dollar increase in the value of corporate stock

service induced campaign contributions and the electoral equilibrium candidates for office are modeled as promising services such as support for legislation and intervention in the bureaucracy to interest groups in exchange for campaign contributions an electoral equilibrium is characterized in which candidates choose service contribution offers and interest groups choose whether to contribute the model provides several explanations of congressional incumbents success in over 90 percent of their reelection contests a recognition advantage a high personal valuation of the office a lower cost of providing services and policy alignment with high demand interest groups the model yields predictions that are consistent with empirical findings on the relation between campaign contributions and election outcomes

emerging market business cycles learning about the trend abstract emerging market business cycles feature a higher variability of consumption relative to output and a strongly countercyclical trade balance an equilibrium business cycle model in which agents learn to distinguish between the permanent and transitory components of total factor productivity shocks using the kalman filter accounts for these features calibrated to mexico the model accounts for the behavior of consumption and the trade balance for a wide range of variability and persistence of permanent shocks relative to transitory shocks estimation for mexico and canada suggests more severe informational frictions in emerging markets than in developed economies