a method for solving general equilibrium models with incomplete markets and many financial assets abstract this paper presents a numerical method for solving stochastic general equilibrium models with dynamic portfolio choice the method can be applied to models with heterogeneous agents time varying investment opportunity sets and incomplete asset markets we illustrate the method using a two country model with production we check the accuracy of our method by comparing the numerical solution to a complete markets version of the model against its known analytic properties we then apply the method to an incomplete markets version where no analytic solution is available in all versions the standard accuracy tests confirm the effectiveness of our method

calculating and using second order accurate solutions of discrete time dynamic equilibrium models we describe an algorithm for calculating second order approximations to the solutions to nonlinear stochastic rational expectations models the paper also explains methods for using such an approximate solution to generate forecasts simulated time paths for the model and evaluations of expected welfare differences across different versions of a model the paper gives conditions for local validity of the approximation that allow for disturbance distributions with unbounded support and allow for non stationarity of the solution process

the economics of investor protection isds versus national treatment abstract investor state dispute settlements isds are supposed to protect foreign investors against domestic policies causing unjustified harm this paper scrutinizes the effects of isds and national treatment provisions in a two period model where foreign investment is subject to a hold up problem it shows that isds may increase welfare but comes with additional regulatory distortions in the first period a national treatment provision avoids these regulatory distortions but implies entry distortions because it makes the hold up problem also apply to domestic firms if the domestic regulatory framework applies to many domestic firms a national treatment provision welfare dominates isds

capital flows in the euro area and target2 balances abstract this paper explores how the uneven recourse by national banking systems in the euro area to the ecb s unconventional refinancing operations that led to the accumulation of large target2 balances at the ncbs has contributed to the evolution of aggregate economic activity in important member states of the euro area for the period between 2008 and 2014 we estimate a panel var model and identify the structural shocks by means of sign restrictions our results suggest that the build up of target2 balances was driven mainly by capital flow shocks while being barely responsive to other aggregate shocks furthermore on the basis of counterfactual experiments we find that the ability to build up sizeable target2 liabilities has contributed substantially to avoiding deeper recessions in the distressed euro area member countries like spain italy ireland and portugal while to a smaller extent depressing aggregate economic activity in core member states such as germany the netherlands and finland

how debt markets have malfunctioned in the crisis the financial crisis that began in 2007 is especially a crisis in debt markets a full understanding of what happened in the financial crisis requires investigation into the plumbing of debt markets during a financial crisis when funds often cannot be raised easily or quickly the fundamental values for certain assets can become separated for a time from market prices with consequences that can echo into the real economy this article will explain in concrete ways how debt markets can malfunction with deleterious consequences for the real economy after a quick overview of debt markets i discuss three areas that are crucial in all debt markets decisions risk capital and risk aversion repo financing and haircuts and counterparty risk in each of these areas feedback effects can arise so that less liquidity and a higher cost for finance can reinforce each other in a contagious spiral i will document the remarkable rise in the premium that investors placed on liquidity during the crisis next i will show how these issues caused debt markets to break down indeed fundamental values and market values seemed to diverge across several markets and products that were far removed from the toxic subprime mortgage assets at the root of the crisis finally i will discuss briefly four steps that the federal reserve took to ease the crisis and how each was geared to a specific systemic fault that arose during the crisis

detecting imbalances in house prices what goes up must come down i suggest a toolkit of four bubble detection methods that can be used to monitor developments in house prices these methods are applied to us finnish and norwegian data for the united states all measures unanimously suggest a bubble in the early to mid 2000s whereas current us house prices are found to be aligned with economic fundamentals one of the measures indicates imbalances in finland while there are no signs of a bubble in norway i find that large parts of the us house price bubble can be explained by the sharp increase in capital inflows and the extension of loans to the subprime mortgage market

global imbalances and financial fragility the united states is currently engulfed in the most severe financial crisis since the great depression the crisis was triggered by the crash in the real estate bubble and amplified by the extreme concentration of risk in a highly leveraged financial sector conventional wisdom is that both the bubble and the risk concentration were the result of mistakes in regulatory policy an expansionary monetary policy during the boom period of the bubble and failure to reign in the practices of unscrupulous lenders in this paper we argue that while correct in some dimensions this story misses two key structural factors behind the securitization process that supported the real estate boom and the corresponding lever age first over the last decade the us has experienced large and sustained capital inflows from foreigners seeking us assets to store value caballero emmanuel farhi and pierre olivier gourinchas 2008 second especially after the nasdaq tech bubble and bust excess world savings have looked predominantly for safe debt investments this should not be surprising because a large amount of the capital flow into the us has been from foreign central banks and governments that are not expert investors and are merely looking for a store of value krishnamurthy and annette vissing jorgenson 2008 in this paper we develop a stylized model that captures the essence of this environment the model accounts for three facts observed during the boom and bust phases of the current crisis first during a period of good shocks which we interpret as the period up to the end

withering government spending multipliers the empirical literature has documented a weakening of the consumption and output responses to an increase in government spending during the last thirty years we show that a new keynesian model in which real government spending is observed with measurement errors can account for the reduction in the size of government spending multipliers the model implies consistent with empirical evidence presented by ilzeki et al 2009 that the evolution of monetary policy and greater globalization increasing international trade and decreasing capital controls are key factors in this development

external balances trade and financial conditions abstract i present a new model for the u s external position that accounts for the accumulation of international debt over the past 60 years the model is based on the present value restriction that links a country s external position to future trade flows and financial conditions in the absence of arbitrage opportunities and ponzi schemes it features the role played by the stochastic discount factor the trade and valuation adjustment channels and provides a decomposition of the u s external position into secular and cyclical components the model shows that shocks operating via the valuation channel are the dominant drivers of cyclical dynamics accounting for approximately 80 of the variance over the 60 year sample this channel works primarily via capital gains and losses on u s foreign assets and is closely tied to the international value of the u s dollar in contrast there is no evidence that valuation channel adjustments contribute to the secular dynamics but differences between the average returns on foreign assets and liabilities raise the steady state debt to gdp ratio from approximately 12 to 15 the long term deterioration in the u s position represents a move towards the steady state before the early 1990s and a move away from the steady state thereafter i quantify the expected improvement in future u s trade balances needed to justify this as a sustainable path and show that they are very different from its actual behavior during the last 60 years i also study the behavior of the u s position during the 2007 2008 financial crisis

a public good approach to credit ratings from concept to reality abstract from the onset of the 2008 2009 financial crisis to the subsequent european sovereign debt crisis credit rating agencies have been assigned considerable blame reforming the credit rating industry has hence become an important policy issue in addition to the regulatory efforts in the context of accepting the for profit business model of ratings there is a growing realization that credit ratings bear the characteristics of a public good financial market participants need reliable transparent and independent assessment of credit risks credit ratings are therefore better viewed as an infrastructure matter however the proposed regulations seem to have missed this point this paper introduces a new approach to credit ratings undertaken by the risk management institute at the national university of singapore that is predicated on the provision of credit ratings as a public good with a public good alternative in place the currently predominant for profit business model may be counterbalanced

large investors regulatory taking and investor state dispute settlement abstract this paper offers an economic analysis of an international investor state dispute settlement regime isds in markets with large investors it identifies a reason for strategic overinvestment by the domestic industry leading to permissive regulation in the absence of isds an ideal investor state dispute settlement arrangement efficiency oriented transaction cost free with untouchable fully reliable and unbiased judges has positive and negative effects in this framework it generates an equal level playing field for domestic and foreign investors but it magnifies an existing overinvestment problem and may reduce world welfare the results explain anecdotal evidence according to which isds that protects foreign investors is liked by the domestic industry and disliked by other interest groups in the host country

current account balance and dollar standard exploring the linkages abstract this paper examines whether the international role of the dollar as main global reserve currency has contributed to persistent current account imbalances to this end we analyse how central banks accumulation of reserve assets affects the current account balance of both reserve accumulating and reserve providing countries based on a simple portfolio balance model we show theoretically that the global demand for reserve assets by central banks may lower the current account balance of the reserve issuing country our panel data analysis over the period 1970 2009 confirms this hypothesis any dollar of provided reserve assets decreases the us current account by more than one dollar on average the demand for dollar reserves has lowered the us current account by 1 2 percentage points relative to gdp the flip side of this effect is a higher current account balance in reserve accumulating countries these novel findings show that the worldwide demand for international reserves has contributed to the buildup of global imbalances

the contribution of wealth concentration to the subprime crisis a quantitative estimation the crisis that broke out in mid 2007 was caused by the fact that the cdo market had grown to a size sufficient to wreak general havoc when it suddenly collapsed several authors have argued that economic inequality was important to the growth of this market this paper attempts to strengthen this argument by concentrating attention on global wealth concentration after summarising recent evidence on the negative impact of investor demand on us bond yields in the pre crisis period new evidence regarding the specific contribution of high net worth individuals to this negative impact is presented the paper then goes on to show how after having helped to caused a yield problem in the major us debt markets high net worth individuals via hedge funds continued to be a major source of the pressure on us banks to resolve this yield problem through the mass production of cdos

waiting for change adjustment and reform in cuba abstract buffeted by the collapse of trading relations with the former socialist bloc and the continuing us embargo cuba has attempted to adjust to external crisis via tighter rationing to curtail demand and traditional planning and sectoral strategies to expand the supply of tradables this overall program has failed and cuba has recently begun timid steps toward a more market oriented approach we argue that the centerpiece of a new strategy should be a rapid privatization which can be designed to absorb the monetary overhang widely distribute assets and control and protect the social safety net that has characterized the cuban economy

self enforcing trade agreements evidence from time varying trade policy the bagwell and staiger 1990 theory of cooperative trade agreements predicts new tariffs i increase with imports ii increase with the inverse of the sum of the import demand and export supply elasticities and iii decrease with the variance of imports the authors find us import policy during 1997 2006 to be consistent with this theory a one standard deviation increase in import growth the inverse of the sum of the import demand and export supply elasticity and the standard deviation of import growth changes the probability that the us imposes an antidumping tariff by 35 percent by 88 percent and by 76 percent respectively

monetary policy in open economies abstract the recent literature on monetary policy in open economies has produced a strong presumption in favor of activistic policy and flexible exchange rates we argue that this result may owe much to the combination of two commonly made assumptions that nominal goods prices are rigid and that the monetary authorities have a lot of information about the economy when the source of nominal rigidity is found in wages and monetary policy is conducted according to less information demanding rules such as a standard interest rate rule policies that stabilize the money supply or the nominal exchange rate may perform better

price stability in open economies this paper studies the conditions under which price stability is the optimal policy in a two country open economy model with imperfect competition and price stickiness special conditions on the levels of country specific distortionary taxation and the intratemporal and intertemporal elasticities of substitution need to be satisfied these restrictions apply to both cooperative and non cooperative settings most importantly we show that cooperative and non cooperative solutions do not coincide despite market completeness and producer currency pricing in this framework our analysis suggests a role for international policy coordination

natural gas overview for world economy from primary supply to final demand via global supply chains abstract as the world is smoothing the transition towards a low carbon energy structure natural gas has occupied a critical position in global energy supply also globalization has catalyzed ever increasing indirect energy flows in international trade in order to present a comprehensive overview of natural gas use in globalized economy this paper applies the systems multi regional input output mrio analysis to track natural gas use from primary suppliers to final consumers via the links by producers in the world economy supported by typical statistics for the year of 2011 natural gas embodied in international trade is revealed amounting to 2722 1 bcm in magnitude up to 90 of total gas extraction for energy use indicating the intensive relocation of gas use by trade 83 of traded embodied natural gas is associated with intermediate trade mainly from leading primary suppliers including russia usa and western asia to dominant final consumers like usa eu27 and east asia significant differences are found between direct and embodied natural gas flows consumption based resource efficiency can break the illusion of efficiency improvements and trade imbalance in terms of gas use can be opposite to the trade imbalance in conventional monetary terms this paper has constructed a comprehensive analytical framework to trace natural gas flows in globalized economy for the first time aiming to provide new insights for policy making

exchange rate regimes and asset prices abstract we study the implications of alternative exchange rate regimes for asset prices in a portfolio balance model motivated by the recent us china experience we establish that asset price responses to various shocks differ across a flexible regime and a unilateral peg but the differences for most shocks tend to be rather small moreover while both monetary and public debt expansions have inflationary effects on equity prices the latter s impact is stronger under a flexible exchange rate regime these two findings suggest that a flexible usd rimni rate would not have limited the recent asset price inflation in the us

financial integration and the wealth effect of exchange rate fluctuations abstract recent years have witnessed a large increase in international financial integration in the form of largely offsetting cross holdings across countries we assess how such financial leverage affects the international transmission of monetary shocks and find that it leads to sizable welfare differentials that far exceed the impact due to nominal rigidities we document the relevance of the exact nature of holdings with bond holdings associated with larger effects than equity holdings the impact of financial leverage on welfare is also sensitive to the extent of exchange rate pass through and the substitutability between goods produced in different countries

cuban planning in the mid 1980s centralization decentralization and participation abstract the paper examines the cuban planning system in the light of economic reforms in other state socialist countries investigating the advisability and feasibility of market type reforms in the current cuban context the cuban system remains highly centralized in spite of recent attempts to introduce more popular participation and make greater use of economic levers in the planning process but basic trends in and challenges facing the cuban economy in the 1980s may be strengthening the case for greater economic decentralization and expansion of markets

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

new directions for stochastic open economy models the paper develops a simple stochastic new open economy macroeconomic model based on sticky nominal wages explicit solution of the wage setting problem under uncertainty allows one to analyze the effects of the monetary regime on welfare expected output and the expected terms of trade despite the potential interplay between imperfections due to sticky wages and monopoly the optimal monetary policy rule has a closed form solution to motivate our model we show that observed correlations between terms of trade and exchange rates are more consistent with our traditional assumptions about nominal rigidities than with a popular alternative based on local currency pricing 2000 elsevier science b v all rights reserved

the us treasury floating rate note puzzle is there a premium for mark to market stability abstract we find that treasury floating rate notes frns trade at a significant premium relative to the prices of treasury bills and notes this premium is directly related to the near constant nature of frn prices and is correlated with measures reflecting investor demand for safe assets money market funds are often the primary investors in frns and the frn premium is related to flows into funds with fixed net asset values but not to flows into funds with variable net asset values these results provide strong evidence that the frn premium represents a convenience yield for the mark to market stability feature of frns

a two period model with portfolio choice understanding results from different solution methods using a stylized two period model we compare portfolio solutions from two local solution approaches the approach of judd and guu 2001 and the approach of devereux and sutherland 2010 2011 with the true nonlinear portfolio solution

short run independence of monetary policy under pegged exchange rates and effects of money on exchange rates and interest rates this paper examines the effects of money supply changes on exchange rates interest rates and production in an optimizing two country model in which some sectors of the economy have predetermined nominal prices in the short run and other sectors have flexible prices money supply shocks have liquidity effects both within and across countries and induce a cross country real interest differential the model predicts that liquidity effects are highly nonlinear and are not likely to be captured well empirically by linear models particularly those involving only a single country a striking implication of the model is that countries have a significant degree of short run independence of monetary policy even under pegged exchange rates copyright 1997 by ohio state university press

composition and growth effects of the current account a synthesized portfolio view abstract this paper analyzes a useful accounting framework that breaks down the current account to two components a composition effect and a growth effect we show that past empirical evidence which strongly supports the growth effect as the main driver of current account dynamics is misconceived the remarkable empirical success of the growth effect is driven by the dominance of the cross sectional variation which under conditions met by the data is generated by an accounting approximation in contrast to previous findings that the portfolio share of net foreign assets to total assets is constant in a country both our theoretical and empirical results support a highly persistent process or a unit root process with some countries displaying a trend finally we reestablish the composition effect as the quantitatively dominant driving force of current account dynamics in the past data

a theory of managed trade this paper proposes a theory that predicts low levels of protection during periods of normal trade volume coupled with episodes of special protection when trade volumes surge this dynamic pattern of protection emerges from a model in which countries choose levels of protection in a repeated game facing volatile trade swings high trade volume leads to a greater incentive to defect unilaterally from cooperative tariff levels therefore as the volume of trade expands the level of protection must rise in a cooperative equilibrium to mitigate the rising trade volume and hold the incentive to defect in check copyright 1990 by american economic association

do the ecb and the fed really need to cooperate optimal monetary policy in a two country world abstract a two country model with monopolistic competition and price stickiness is employed to investigate the implications for macroeconomic stability and the welfare properties of three international policy arrangements a cooperative b non cooperative and c monetary union i characterize the conditions under which there is scope for policy cooperation and quantify the costs of non cooperation and monetary union the non cooperative equilibrium may be suboptimal because of terms of trade spillover effects while monetary union may be suboptimal because of the sluggishness of relative prices both the costs of policy competition and of a monetary union are sensitive to the values assumed for the intertemporal and international demand elasticity and the degree of openness of the economy independently of the calibration scenario adopted the ecb has little to gain by coordinating with the fed

valuation effects and the dynamics of net external assets abstract valuation effects can imply that the traditional current account is an inaccurate measure of the change in the net foreign asset nfa position this paper uses new developments in the analysis of portfolio choice in general equilibrium to investigate valuation effects in a two country model broadly speaking the valuation effects in the model correspond to those observed in the data but there is a key distinction between unanticipated and anticipated valuation effects unanticipated effects can be large dominating the movement in nfa but anticipated effects arise only at higher orders of approximation and are small for reasonable parameterizations

interest rate co movements global factors and the long end of the term spread the decoupling of us short and long interest rates has been a distinctive feature of the 2000s we employ recent advances in panel econometrics to document this disconnect for industrial countries and link it to a global latent factor in long term rates we investigate whether international forces such as global inflation global output or the global savings glut may be behind this global latent factor the savings glut is the most likely contender suggesting that reserve accumulation and a search for yield from emerging markets has lowered long rates internationally driving a wedge between domestic short and long rates

on the benefits of a monetary union does it pay to be bigger this paper revisits the question of the appropriate domain of a currency area using a new keynesian open economy model in which the world is split into two areas each framed as a continuum of small open regions we show that the adoption of a common currency like the euro can be beneficial for the members of the monetary union since the spill over effects generated by the inflationary policies of the small open economies are likely to outweigh the costs of not tailoring monetary policy to country specific shocks we also show that while the enlargement of the monetary union to another group of small open economies can bring about welfare gains for all countries involved monetary integration of two large economies such as the euro area and the u s will not these findings can help to rationalize the process of the creation and enlargement of multi country currency areas like the eurozone

capital flows consumption booms and asset bubbles a behavioural alternative to the savings glut hypothesis bernanke 2005 hypothesized that a global savings glut was causing large trade imbalances however we show that the global savings rates did not show a robust upward trend during the relevant period moreover if there had been a global savings glut there should have been a large investment boom in the countries that imported capital instead those countries experienced consumption booms national asset bubbles explain the international imbalances the bubbles raised consumption resulting in large trade deficits in a sample of 18 oecd countries plus china movements in home prices alone explain half of the variation in trade deficits

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

capital inflows and the u s housing boom we estimate an open economy vector autoregressive var model to study the effect of capital inflow shocks on the u s housing market we look at different external shocks that generate capital inflows to the u s in particular saving glut shocks and foreign monetary policy expansions the shocks are identified with theoretically robust sign restrictions derived from an open economy dynamic stochastic general equilibrium dsge model our findings suggest that capital inflows that result from saving glut shocks have a positive and persistent effect on real house prices and real residential investment

subprime borrowers securitization and the transmission of business cycles a growing literature i e jaffee lynch richardson and van nieuwerburgh 2009 acharya and schnabl 2009 argues that securitization improves financial stability if the securitized assets are held by capital market participants rather than financial intermediaries i construct a quantitative macroeconomic model with a novel specification for mortgage backed securities mbs to evaluate this claim my findings suggest that the existence of the securitization market stabilizes the economy under the condition that financial intermediaries do not engage in the acquisition of securitized assets in the presence of large negative housing preference shocks the drop in output in the first year after the shock is halved if subprime mbs are purchased by non financial agents rather than held by banks less

what makes us government bonds safe assets us government bonds are considered to be the world s safe store of value especially during periods of economic turmoil such as the events of 2008 but what makes us government bonds safe assets we highlight coordination among investors and build a model in which two countries with heterogeneous sizes issue bonds that may be chosen as safe asset our model illustrates the benefit of a large absolute debt size as safe asset investors have nowhere else to go in equilibrium and the large country s bonds are chosen as the safe asset moreover the effect becomes stronger in crisis periods

financial integration and liquidity crises this paper analyzes the effects of financial integration on the stability of the banking system financial integration allows banks in different regions to smooth local liquidity shocks by borrowing and lending on a world interbank market we show under which conditions financial integration induces banks to reduce their liquidity holdings and to shift their portfolios toward more profitable but less liquid investments integration helps reallocate liquidity when different banks are hit by uncorrelated shocks however when a correlated systemic shock hits the total liquid resources in the banking system are lower than in autarky therefore financial integration leads to more stable interbank interest rates in normal times but to larger interest rate spikes in crises these results hold in a setup in which financial integration is welfare improving from an ex ante point of view we also look at the model s implications for financial regulation and show that in a second best world financial integrati

a model of the international monetary system we propose a simple model of the international monetary system we study the world supply and demand for reserve assets denominated in different currencies under a variety of scenarios a hegemon vs a multipolar world abundant vs scarce reserve assets a gold exchange standard vs a floating rate system we rationalize the triffin dilemma which posits the fundamental instability of the system as well as the common prediction regarding the natural and beneficial emergence of a multipolar world the nurkse warning that a multipolar world is more unstable than a hegemon world and the keynesian argument that a scarcity of reserve assets under a gold standard or at the zero lower bound is recessionary our analysis is both positive and normative

computing second order accurate solutions for rational expectation models using linear solution methods this paper shows how to compute a second order accurate solution of a non linear rational expectation model using algorithms developed for the solution of linear rational expectation models the result is a state space representation for the realized values of the variables of the model this statespace representation can easily be used to compute impulse responses as well as conditional and unconditional forecasts

the role of dispute settlement procedures in international trade agreements although disputes are typically treated as synonymous with concerns about enforcement in economic models of trade agreements in reality most wto disputes seem to concern the interpretation of vague provisions or instances where the agreement is silent and some have suggested that the wto s dispute settlement body dsb could usefully grant exceptions to rigid contractual obligations these activist dsb roles could help complete an incomplete contract but how activist should the dsb be should dsb rulings set precedent we address these questions by characterizing the optimal choice of contract form and dsb mandate under various contracting conditions jel codes d02 d78 d86 f13 k12 k33

the shortage of safe assets in the us investment portfolio some international evidence this paper develops a bayesian global var gvar model to track the international transmission dynamics of two stylized shocks namely a supply and demand shock to us based safe assets our main findings can be summarized as follows first we find that positive supply sided shocks lead to pronounced increases in economic activity which spills over to foreign countries the impact of supply sided shocks can also be seen for other quantities of interest most notably equity prices and exchange rates in europe second a demand sided shock leads to an appreciation of the us dollar and generally lower yields on us securities forcing investors to shift their portfolios towards foreign fixed income securities this yields sizable positive effects on us output equity prices and a general decrease in financial market volatility

global primary energy use associated with production consumption and international trade presented in this study is a comprehensive analysis for energy use of different economic entities in global supply chains including the exploiter producer consumer intermediate trader and final trader the systems input output analysis method is adopted to trace the direct and indirect energy use associated with both intermediate production and final consumption activities in the economic system in the world economy 15 of the energy use embodied in trade turns out to be induced by final consumption and 85 is attributed to intermediate production different trading patterns for different economies are identified with the separation between energy trade for intermediate production and that for final consumption for japan with a production oriented trading pattern intermediate trade should be a top priority in local trade structure adjustment while final trade needs more attention for the government in the united states as the country is in a consumption oriented trade pattern this analysis aims to provide an in depth insight into energy sustainability as well as a sound scientific reference for policy making at the regional national and global scale

exchange rate systems and macroeconomic stability abstract we examine macroeconomic stability and the properties of the international transmission of business cycles under three exchange rate systems a flexible a unilateral peg ems and a single currency emu the subjects of study are germany and france in france macroeconomic volatility under emu is comparable to that under a flexible exchange rate system but considerably lower than that under ems in germany output volatility is significantly higher under ems relative to the flexible regime and increases even further under emu inflation though becomes more stable emu also induces a strong negative international transmission of country specific supply shocks and amplifies their role this fact may complicate ecb policymaking

financial intermediation international risk sharing and reserve currencies abstract i model the equilibrium risk sharing between countries with varying financial development the most financially developed country takes greater risks because its financial intermediaries deal with funding problems better in good times the more financially developed country consumes more and runs a trade deficit financed by the higher financial income that it earns as compensation for taking greater risk during global crises it suffers heavier losses its currency emerges as the reserve currency because it appreciates during crises thus providing a good hedge i provide evidence that financial net worth plays a crucial role in understanding this asymmetric risk sharing jel e44 f14 f32 g01 g15 g21

reserve accumulation and financial crises from individual protection to systemic risk abstract this paper provides a new perspective on the relationship between countries international reserve holdings and financial crises while the local view holds that reserves may prevent domestic crises it overlooks that the accumulation of reserves relaxes the financing constraint of the reserve currency country and may cause a financial crisis in the centre which is transmitted globally according to this global view reserve accumulation might destabilize the international financial system since the crisis affects all countries alike the accumulation of reserves imposes a negative externality on non accumulating countries we integrate this idea in a theoretical model of the optimal amount of reserves and illustrate the gap between local and global optimality the consideration of systemic risk lowers the demand for reserves moreover if a supranational authority determines the optimal level of reserves it internalizes the negative externality and accumulates fewer reserves a macroprudential tax on reserve hoardings might implement the socially optimal solution our calibration analysis shows that these considerations are economically significant they lower the optimal amount of reserves in the benchmark case by 45

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

the need for international policy coordination what s old what s new what s yet to come the first generation of policy coordination models was introduced some 25 years ago it provided a rationale for policy coordination but the gains from coordination were generally thought to be small now a new generation of policy coordination models is emerging incorporating monopolistic competition and nominal inertia here we examine macroeconomic interdependence and the scope for policy coordination in a tractable second generation model with two countries and multiple sectors initial calibration of the model suggests that second generation models may have more scope for policy coordination than did the first d 2004 elsevier b v all rights reserved

asymmetric information in securitization an empirical assessment abstract asymmetric information in securitization deals is analyzed based on a unique dataset comprising a million mortgages both securitized and not and using a methodology previously applied to insurance data that looks at the correlation between risk transfer and default probability the main finding is that for given observable characteristics securitized mortgages have a lower default probability than non securitized ones we show that this finding is consistent with banks caring about their reputation for not selling lemons

why did the equity home bias fall during the financial panic of 2008 investors tend to put most of their wealth in local stocks theories of portfolio choice and uncertainty aversion jointly predict that this home bias should increase during a financial crisis yet using a sample of 45 countries i document that the equity home bias fell during the financial panic of 2008 exploiting bilateral stock holdings i find that investors actively increased their home bias but large valuation changes subsumed these trades across countries the change in home bias is consistent with partial portfolio rebalancing and increased information asymmetries during the crisis

theoretical foundations of negotiations and cost sharing in transfrontier pollution problems the negotiations model is described by a dynamic process bearing on a multilateral externality that converges to an individually rational pareto optimum the process embodies a cost sharing rule for pollutant abatement in the countries involved derived from a sharing rule of the surplus that is also shown to have strategic stability in the game theoretic sense of an imputation in the core of some cooperative game associated with the negotiation process the connections are explored between this cost sharing rule and the free rider problem in public goods theory

the external wealth of nations measures of foreign assets and liabilities for industrial and developing countries abstract although capital flows are closely monitored surprisingly little is known about the accumulated stocks of foreign assets and liabilities held by various countries especially in the developing world this paper constructs estimates of foreign assets and liabilities and their equity and debt subcomponents for a sample of 67 industrial and developing countries it characterizes the stylized facts of international balance sheets and asks whether there are trends in net foreign asset positions and shifts in debt equity ratios over time finally it explores the sensitivity of estimated stock positions to the treatment of valuation effects not captured in balance of payments data

financial stability energy consumption and environmental quality evidence from south asian economies abstract a few studies are found on the relationship between financial instability energy consumption and environmental quality in energy economics literature the current study is an endeavor to fill this gap by investigating the relationship between financial stability economic growth energy consumption and carbon dioxide co 2 emissions in south asian countries over the period 1980 2012 using a multivariate framework bounds test for cointegration and granger causality approach are employed for the empirical analysis estimated results suggest that all variables are non stationary and cointegrated the results show that financial stability improves environmental quality while the increase in economic growth energy consumption and population density are detrimental for environment quality in the long run the results also support the environmental kuznets curve ekc hypothesis which assumes an inverted u shaped path between income and environmental quality moreover the study found the evidence of unidirectional causality running from financial stability to co 2 emissions in two countries i e pakistan and sri lanka the findings of this study open up new insight for policy makers to design a comprehensive financial economic and energy supply policies to minimize the detrimental impact of environmental pollution

public debt structure and liquidity provision abstract this study examines the optimal public debt structure when governments can issue multiple assets the state s fiscal capacity is uncertain public debt has a liquidity purpose for domestic investors and public debt markets are open to foreign investors the optimal policy is to tranch the risky fiscal capacity and then to issue state contingent assets that pay only when the need for aggregate liquidity in the economy is high in this way governments can minimize wasted liquidity of public assets unused returns on public assets not required by domestic investors this minimizes the cost of liquidity hoarding for the domestic private sector which increases investment and welfare in the economy this study also provides a framework to analyze relevant comparative statics regarding the ownership of state contingent public assets in particular the model assesses the effects of changes in the domestic liquidity needs the state s fiscal capacity and the foreign willingness to pay for public debt on the ownership of state contingent public assets

savings asset scarcity and monetary policy abstract this paper analyzes optimal monetary policy regarding asset markets in a model where money and savings are essential and asset markets matter the model is able to explain why different regimes for the correlation of real interest rates and stock price dividend ratios exist and offers two explanations why the correlation vanished after 2007 a decrease in inflation or changes in the supply of risky and safe assets the results on optimal policy show that away from the friedman rule fiscal policy can improve welfare by increasing the amount of outstanding government debt if the fiscal authority is not willing or able to increase debt the monetary authority can improve welfare of current generations by reacting procyclically to asset return shocks

the problem of balance in the peripheral socialist economy a conceptual note abstract the structure of the peripheral socialist economy is fundamentally distinct from the classical socialist economy upon which the planning literature has been based essentially this derives from the fact that the constraint on growth is foreign exchange and not the supply of labour or wage goods as such in consequence the possibilities for accumulation depend on international rent and depression of popular consumption does not in fact contribute much to the rate of growth three different sectors of the peripheral socialist economy can be identified and related to problems of accumulation and planning

trade disputes and settlement we develop a model of trade agreements with renegotiation and imperfectly verifiable information in equilibrium trade disputes can occur and can be resolved in a variety of ways governments may settle early or trigger a court ruling and in the latter case they may implement the ruling or reach a post ruling settlement the model yields predictions on how the dispute outcome depends on the contracting environment and how it correlates with the optimal contract form we find support for a key prediction of our model using data on the outcomes of actual trade disputes in the general agreement on tariffs and trade world trade organization

wage rigidity and monetary union we compare monetary union to flexible exchange rates in an asymmetric threecountry model with active monetary policy unlike the traditional oca literature we find that countries with a high degree of nominal wage rigidity benefit from monetary union specially when they join other similarly rigid countries countries with relatively more flexible wages tend to be worse off in unions with countries that have more rigid wages we examine france germany and the uk and find that the welfare implications of alternative monetary arrangements depend more on the degree of wage asymmetry than on other types of asymmetries in shocks monetary policy etc and that higher degree of wage flexibility in the uk relative to france and germany would make its participation in emu costly

patterns of cuban development the first twenty five years abstract this paper interprets the post 1959 evolution of cuban economic policymaking and performance as a function of the shifting and interacting domestic and foreign sources of surplus accumulation policy choices previously seen as strictly subjective such as the use of moral incentives in the late 1960s are attributed objective components the tensions between decentralization and centralization market and plan private and public agriculture and industry efficiency and equity are discussed in relation to domestic surplus generation the role of soviet aid commodity prices trading patterns and debt repayment are treated in analyzing foreign influences on surplus generation

country portfolios in open economy macro models this paper develops a simple approximation method for computing equilibrium portfolios in dynamic general equilibrium open economy macro models the method is widely applicable simple to implement and gives analytical solutions for equilibrium portfolio positions in any combination or types of asset it can be used in models with any number of assets whether markets are complete or incomplete and can be applied to stochastic dynamic general equilibrium models of any dimension so long as the model is amenable to a solution using standard approximation methods we first illustrate the approach using a simple two asset endowment economy model and then show how the results extend to the case of any number of assets and general economic structure

the role of national debts in the determination of the yen dollar exchange rate an intertemporal optimization model is developed to examine the determinants of the long run nominal yen dollar exchange rate in the presence of national debts the model is tested empirically using data from japan and the usa the proposed theoretical specification is well supported by the data and shows that relative national debts as well as monetary and financial factors may play a significant role in the determination of the long run nominal exchange rate between the yen and the dollar

why does capital flow to rich states abstract the magnitude and the direction of net international capital flows do not fit neoclassical models the fifty u s states comprise an integrated capital market with very low barriers to cap

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

international agreements economic sovereignty and exit abstract we develop a model in which realisations of an ex ante uncertain domestic policy environment can make it attractive to a sovereign nation to renege on an international agreement we show in a fairly general setting in which the likelihood of exit is affected by the degree of cooperation that the possibility of exit reduces the optimal degree of initial cooperation full cooperation will never be optimal and the optimal degree of cooperation will never be such as to squeeze out any possibility of exit however an increase in global uncertainty may imply an increase in cooperation when exit risks are already large to begin with

time varying risk aversion abstract exploiting portfolio data and repeated surveys of an italian bank s clients we test whether investors risk aversion increases following the 2008 crisis we find that after the crisis both qualitative and quantitative measures of risk aversion increase substantially and that affected individuals divest more stock we investigate four explanations changes in wealth expected income perceived probabilities and emotion based changes of the utility function our data are inconsistent with the first two channels while they suggest that fear is a potential mechanism underlying financial decisions whether by increasing the curvature of the utility function or the salience of negative outcomes