banking in computable general equilibrium economies abstract in this paper we develop a computable general equilibrium economy that models the banking sector explicitly banks intermediate between households and between the household sector and the government sector households borrow from banks to finance their purchases of houses and they lend to banks to save for retirement banks pool households savings and they purchase interest bearing government debt and non interest bearing reserves we use this structure to answer two sets of questions one normative in nature that evaluates the welfare costs of alternative monetary and tax policies and one positive in nature that studies the real effects of following a procyclical interest rate policy rule

occupational choice and the process of development this paper models economic development as a process of institutional transformation by focusing on the interplay between agents occupational decisions and the distribution of wealth because of capital market imperfections poor agents choose working for a wage over self employment and wealthy agents become entrepreneurs who monitor workers only with sufficient inequality however will there be employment contracts otherwise there is either subsistence or self employment thus in static equilibrium the occupational structure depends on distribution since the latter is itself endogenous we demonstrate the robustness of this result by extending the model dynamically and studying examples in which initial wealth distributions have long run effects in one case the economy develops either widespread cottage industry self employment or factory production employment contracts depending on the initial distribution in the other example it develops into prosperity or stagnation

natural resources curse or blessing are natural resources a curse or a blessing the empirical evidence suggests that either outcome is possible this paper surveys a variety of hypotheses and supporting evidence for why some countries benefit and others lose from the presence of natural resources these include that a resource bonanza induces appreciation of the real exchange rate deindustrialization and bad growth prospects and that these adverse effects are more severe in volatile countries with bad institutions and lack of rule of law corruption presidential democracies and underdeveloped financial systems another hypothesis is that a resource boom reinforces rent grabbing and civil conflict especially if institutions are bad induces corruption especially in nondemocratic countries and keeps in place bad policies finally resource rich developing economies seem unable to successfully convert their depleting exhaustible resources into other productive assets the survey also offers some welfare based fiscal rules for harnessing resource windfalls in developed and developing economies

supply side interventions and redistribution we evaluate the eect on welfare of shifting the burden of capi tal income taxes to labor taxes in a dynamic equilibrium model with heterogeneous agents and constant tax rates we calibrate and simu late the economy we nd that lowering capital taxes has two eects i it increases e ciency in terms of aggregate production and ii it redistributes wealth in favor of those agents with a low wage wealth ratio when the parameters of the model are calibrated to match the distribution of income in terms of the wage wealth ratio the redis tributive eect dominates and agents with a high wage wealth ratio would experience a large loss in utility if capital income taxes were eliminated

determinants of the equilibrium real exchange rate n b professor neary was based at university college dublin and queen s university ontario canada when this article was first published the full text of this article is not available in ora at this time citation neary j p 1988 determinants of the equilibrium real exchange rate american economic review 78 1 210 215

public versus private investment in human capital endogenous growth and income inequality in this paper we present an overlapping generations model with heterogeneous agents in which human capital investment through formal schooling is the engine of growth we use simple functional forms for preferences technologies and income distribution to highlight the distinction between economies with public education and those with private education we find that income inequality declines more quickly under public education on the other hand private education yields greater per capita incomes unless the initial income inequality is sufficiently high we also find that societies will choose public education if a majority of agents have incomes below average

consequences of lower oil prices and stranded assets for russia s sustainable fiscal stance abstract despite substantial oil and gas revenue russia s fiscal stance is unsustainable under our benchmark assumptions the permanent income rule requires a permanent tightening of the fiscal stance by 4 6 points of gdp delaying it by a decade implies that the fiscal stance needs to be tightened by a further 0 9 point this benchmark optimal policy ensures that depletion of oil and gas wealth is matched by an equal increase in above ground financial wealth its merits are highlighted by comparing it with the tougher alternative of the bird in hand rule and with projecting the current fiscal stance if oil and gas revenue rises by a half due to higher prices or more discoveries the fiscal stance needs to be tightened by only 3 2 points of gdp however if a large chunk of oil and gas has to be kept in the soil to meet international agreements to keep global warming below 2 c the permanent transfer drops to 2 0 of gdp and the fiscal stance needs to be tightened by 5 5 points of gdp

tariffs capital controls and equilibrium real exchange rates a general equilibrium intertemporal model with optimizing consumers and producers is developed to analyse how the equilibrium real exchange rate rer reacts to changes in the degree of restrictions to intra and intertemporal trade in particular the effects of changes in the level of import tariffs and of changes in taxes on foreign borrowing on the path of equilibrium rers are investigated in the case of import tariffs both temporary and anticipated changes are considered it is shown that in this intertemporal framework equilibrium real exchange rates can exhibit interesting and convoluted behaviour in particular results that contradict the traditional wisdom can be obtained a number of extensions are also discussed tarifs douaniers controles sur les flux de capitaux et taux de change reels d equilibre l auteur developpe un moddle d equilibre general inter temporel dans lequel consom mateurs et producteurs optimisent pour analyser les reactions du taux de change reel d equilibre aux changements dans le degre de restriction du commerce intra et inter temporel en particulier l auteur analyse les effets de changements dans le niveau des tarifs douaniers sur les importations et des taxes sur les emprunts a l etranger sur le sentier d equilibre du taux de change reel dans le cas des tarifs a l importation l auteur examine a la fois les changements temporaires et anticipes on montre que dans ce cadre intertemporel le comportement des taux de change reels d equilibre est interessant et contournm les resultats obtenus contredisent ceux suggeres par la sagesse conventionnelle l auteur discute aussi un certain nombre d extensions de ces resultats

aggregation and aggregation we discuss economic aggregation and political aggregation in the context of a simple dynamic version of the canonical political economy model the meltzer richard model consumers differ both in labor productivity and initial asset wealth and there is no physical capital under commitment over future tax policy and for economic preferences that imply aggregation in assets and productivity the induced policy preferences for individuals do not depend on any distributional characteristics other than means they imply time inconsistency with taxes changing between the first and the second periods and staying constant thereafter political aggregation in the form of a median voter theorem applies only in special cases jel d72 d78 e61 h23

tariffs real exchange rates and the trade balance in a two country world abstract an intertemporal model of a two country world in which optimizing agents consume three goods importables exportables and nontradables is developed to investigate a tariffs effects on real interest rates real exchange rates and the trade balance real interest rates and real exchange rates are shown to move asymmetrically across countries in response to a temporary tariff we also show that in contrast to the findings of two tradable good models a temporary tariff may actually worsen the trade balance of both deficit and surplus countries even when there are no cross country differences in tastes

intergenerational redistribution with short lived governments we study the politics of intergenerational redistribution in an overlapping generations model with short lived governments the successive governments who care about the welfare of the currently living generations and possibly about campaign contributions are unable to pre commit the future course of redistributive taxation in a stationary politico economic equilibrium the intergenerational transfer in each period depends on the current value of the state variable and all expectations about future political outcomes are fulfilled we find that there exist multiple stationary equilibria in many political settings steady state welfare is often lower than it would be in the absence of redistributive politics

reward structures and the allocation of talent as relative rewards that different professions receive are a key factor in the allocation of talent what determines the reward structure of a society is an important question this paper develops an equilibrium model of the allocation of talent between productive and unproductive activities such as rent seeking the existence of rent seeking creates a negative externality on productive agents and implies that relative rewards are endogenously determined the same externality can also lead to the existence of multiple equilibria each with different reward structures in a dynamic setting allocations of past generations as well as expectations of future allocations influence current rewards and the society may get trapped in a rent seeking steady state equilibrium the paper also discusses how the non pecuniary reward structure can be influenced by equilibrium selection and a historical example that suggests the presence of a causal link from the allocation of talent to non pecuniary rewards

a political economy theory of partial decentralization we revisit the classic problem of tax competition in the context of federal nations and derive a positive theory of partial decentralization a capital poor median voter chooses to use redistributive capital taxes to provide public goods the expectation of high capital taxes however results in a small capital stock which lowers returns to redistribution the median voter therefore wants to commit to a lower level of capital taxes she does so by setting a partial degree of decentralization in the constitution the equilibrium degree of decentralization balances the positive effect of tax competition on capital taxes with the loss in redistribution that results we show that the degree of decentralization is nonmonotonic in inequality increasing in the redistributive efficiency of public good provision and decreasing in capital productivity when public goods are heterogeneous in their capacity to transfer funds all voters agree that goods with high redistributive capacity should be decentralized

does inequality drive the dutch disease theory and evidence in this paper we show that the dutch disease can arise solely from inequality in the distribution of natural resource rents given two otherwise identical countries that differ only in the ownership shares of the natural resource rents the country with the less equal distribution will have less production of manufacturing goods and less development of learning by doing in this sector as opposed to conventional models where income distribution has no effect on economic outcomes an unequal distribution of the resource wealth can generate the dutch disease dynamics even in countries with an initial comparative advantage in manufacturing we also provide a range of empirical tests of our model including both difference and system gmm estimators in a dynamic panel to disentangle the effects of inequality and institutional quality we purge our inequality measure of any linear or higher order correlations with institutional quality and repeat our system and difference gmm estimations our empirical analysis supports the hypothesis that inequality indeed plays a significant role in whether being resource rich is a blessing or a curse for a country the more unequal is the distribution of natural resource rents the stronger is the disease

credit constraints entrepreneurial talent and economic development in this paper we formalize the view that economic development requires high rates of productive entrepreneurship and this requires an efficient matching between entrepreneurial talent and production technologies we first explore the role of financial development in promoting such efficient allocation of talent which results in higher production job creation and social mobility we then show how different levels of financial development may endogenously arise in a setting in which financial constraints depend on individual incentives to misbehave these incentives depend on how many jobs are available and this in turn depends on the level of financial development such complementarity between labor market and financial market development may generate highly divergent development paths even for countries with very similar initial conditions

trends in european real exchange rates we study a newly created panel data set of relative prices for a large number of consumer goods among 31 european countries over a 15 year period the data set includes eurozone members both before and after the inception of the euro floating exchange rate countries of western europe and emerging market economies of eastern and southern europe we find that there is a substantial and continuing deviation from purchasing power parity ppp at all levels of aggregation both for traded and non traded goods even among eurozone members real exchange rates rer exhibit two clear properties in the sample a they are closely tied to gross domestic product gdp per capita relative to the european average at all levels of aggregation and for both cross country time series variation b they are highly positively correlated with variation in the relative price of non traded goods we then construct a simple two sector endowment economy model of real exchange rate determination which exhibits these two properties calibrated to match the data simulating the model using the historical relative gdp per capita for each country we find that for most countries there is a close fit between the actual and simulated real exchange rate in terms of policy relevance the model can offer suggestions of the degree to which real exchange rates in europe both in and out of the eurozone have been overvalued by approximately 15 in greece and portugal and 6 in italy and spain martin berka and michael b devereux

commodity currencies and equity flows abstract this paper analyzes the relationship among the prices of natural resources returns on equity and nominal exchange rates of the developed countries where primary commodities are an important share of exports australia canada and new zealand it is found that the portfolio rebalancing motive of hau and rey hau h rey h 2006 exchange rates equity prices and capital flows review of financial studies 19 1 273 317 is weaker for these countries one possible explanation of this finding is that commodity prices due to their flexibility play a special role in the transmission of shocks by linking equity markets across countries and reducing the need for portfolio rebalancing

response of the equilibrium real exchange rate to real disturbances in developing countries abstract using a simple dependent economy framework this paper outlines the links between the equilibrium real exchange rate and some of its fundamental exogenous determinants mainly terms of trade movements and commercial policy changes drawing on existing studies of trade flows in developing countries it is possible to derive plausible quantitative ranges for the response of the equilibrium real exchange rate to both external and policy induced shocks the results should be particularly relevant in designing real exchange rate targets and rules that allow for movements in the equilibrium real exchange rate in response to various shocks

the relative price of nontraded goods and sectoral total factor productivity an empirical investigation this paper examines the relationship between the relative price of nontraded goods and sectoral total factor productivities tfps in the context of the balassa samuelson model with perfect capita

politico economic equilibrium and economic growth abstract we propose a notion of dynamic politico economic equilibrium which builds on two key assumptions policies are determined sequentially and agents are fully rational in their roles as both consumers and voters we examine a simple model of endogenous growth and infinitely lived agents where taxes on income are endogenous and where growth critically depends on the initial distribution of asset holdings we relate our equilibrium definition and results to existing literature on time consistency and on political economy and growth we show that our equilibria are time consistent and we argue that the choice of equilibrium concept might have important quantitative implications

explaining service price differences in international comparisons this paper reexamines observed international differences in the price of services and the positive correlation of these with per capita gdp differences using a general trade model with a nontraced sector the authors find that differences in countries factor endowments populations trade policies and trade balances will have ambiguous and sometimes opposite effects on their service prices and real incomes estimating the service price equation using recent data suggests that larger endowments of agricultural land minerals and capital larger trade deficits and higher prices for tradables increase service prices conversely larger populations and labor forces reduce service prices copyright 1991 by american economic association

redistributive taxation in a simple perfect foresight model abstract we investigate the redistributive potential of capital taxation in an intertemporal maximizing model of capital formation first even unanticipated redistributive capital taxation is severely limited in its effectiveness since it depresses wages second under any convergent redistributive tax policy which maximizes a paretian social objective the capital income tax will converge to zero independent of the factor supply elasticities these results are independent of workers holdings of capital

structure induced equilibria and perfect foresight expectations this paper extends the work on structure induced equilibria by explicitly considering voters expectations the standard assumption of myopic expectations is contrasted with the alternative assumption of perfect foresight expectations in the institutional setting examined perfect foresight means voters know how the outcome on the first issue in a sequence of two issues conditions majority rule outcomes on the second issue if voters act on this knowledge when voting on the first issue then several important results follow first voters may possess multipeaked preferences defined over the first issue with a majority cycle resulting so that there is no equilibrium to the whole sequence of elections second even if cycling does not result the exact location of the equilibrium involves a broader conspiracy than previously thought a conspiracy of not only preferences and institutional structure but also voters expectations as conditioned by that structure

political equilibrium income distribution and growth this paper analyzes the impact of income distribution on growth when investment in human capital is the source of growth and individuals vote over the degree of redistribution in the economy the model has three main features first very different patterns of income distribution are conducive to high growth at different levels of per capita income second growth is associated with an externality whereby investment in human capital by one group increases the productivity of other groups thus potentially enabling them to invest in human capital third the initial pattern of income distribution and the resulting political equilibrium are crucial in determining whether the transmission of this externality is promoted in which case growth is enhanced or prevented in which case growth is stopped using a non overlapping generations model with voting i derive several empirical implications in particular the model implies an inverted u relation between levels of inequality and levels of income in cross sections but not necessarily in time series a result that seems consistent with a number of empirical studies

the real exchange rate under various systems of international capital taxation international organizations such as the organization for economic co operation and development oecd and the european community ec have promoted to varying degrees the liberalization of capital movements among their member countries the code of liberalization of capital movements an agreement drawn in 1982 by the oecd sets different degrees of capital liberalization among its member countries depending on the nature of capital transactions e g direct or portfolio investment the treaty of rome 1957 recommended among other things the liberalization of capital movements among the ec countries chapter iv articles 67 72 by and large capital movements in the ec have been liberalized since 1990 the remaining restrictions in the capital markets of some member countries such as greece ireland portugal and spain were to be eliminated by the end of 1992 2 these developments in the world capital markets have prompted a renewed interest among trade theorists regarding the response of key economic variables e g national income employment and welfare to the liberalization of capital movements with capital becoming more mobile internationally capital flows in a country depend among other things on the domestic and the foreign capital tax rate and on the prevailing system of taxing net repatriated capital earnings in the capital exporting countries frequently capitalexporting countries tax the net repatriated capital earnings according to a system i of tax credits under which tax payments by foreign capital invested in a capital importing country are credited toward its tax liability to the source capital exporting country 3 ii of tax deductions under which

mean reversion in long horizon real exchange rates evidence from latin america abstract this paper examines mean reversion in real effective exchange rates in six leading latin american economies during the xxth century using a new data set a unit root approach is complemented by an error correction model including key fundamentals such as terms of trade trade openness and relative productivities unit root testing shows a very slow process of reversion if any to a constant mean in the original series rejecting the strict ppp hypothesis however mean reversion is found after allowing for trends and structural breaks with a half life average of 1 years for the six countries we also found reversion to a conditional mean defined by the co integrating relationship with an average half life of 2 years our estimates although lower than the 3 5 year range that motivated the rogoff s puzzle still indicate the presence of important obstacles to the adjustment process that need further investigation

reducing government debt in the presence of inequality abstract what are the welfare effects of government debt in particular what are the welfare consequences of government debt reductions we answer these questions with the help of an incomplete markets economy with production households are subject to uninsurable income shocks we make several contributions first by targeting the skewed wealth and earnings distribution of the us economy in our calibration we identify inequality as the major driver of the welfare effects of public debt gdp changes second we show that in order to fully gauge the welfare consequences and the political feasibility of government debt changes it is crucial to consider the transitional dynamics between stationary equilibria our results therefore have important implications for the design of debt reduction policies since the skewed wealth distribution generates a large fraction of borrowing constrained households a public debt reduction should be non linear such that the tax burden is postponed into the future

commercial policy the terms of trade and the real exchange rate revisited abstract we estimate the effects of commercial policy and changes in the external terms of trade on the real exchange rate for four latin american economies using data on internal relative prices we find that the greater the elasticity of the non traded price level with respect to the price of importables the larger is the real exchange rate effect of import restrictions but the smaller is the real exchange rate effect of changes in the external terms of trade

what is challenging renewable energy entrepreneurs in developing countries this paper cumulates the findings from a review of the challenges faced by renewable energy entrepreneurs in developing countries to date research that could facilitate the success of renewable energy entrepreneurs in the world s developing regions has been fragmented across two main bodies of literature management specifically entrepreneurship and renewable energy by conducting a qualitative review of the extant literature i propose that the findings from both bodies of research may be distilled to six 6 key challenges inadequate access to institutional finance the price of renewable energy technologies rets the lack of skilled labour underdeveloped physical infrastructure and logistics power dominance of incumbents inadequate government or policy support through this research i not only advance a unified conceptualisation of the challenges faced by renewable energy entrepreneurs in developing countries but also highlight a number of the revealed opportunities for future research

shadow economies size causes and consequences using various methods the size of the shadow economy in 76 developing transition and oecd countries is estimated average size varies from 12 percent of gdp for oecd countries to 23 percent for transition countries and 39 percent for developing countries increasing taxation and social security contributions combined with rising state regulations are driving forces for the increase of the shadow economy especially in oecd countries according to some findings corruption has a positive impact on the size of the shadow economy and a growing shadow economy has a negative effect on official gdp growth

financial globalization inequality and the rising public debt abstract during the last three decades government debt has increased in most developed countries during the same period we have also observed a significant liberalization of international financial markets we propose a multicountry model with incomplete markets and show that governments may choose higher levels of debt when financial markets become internationally integrated we also show that public debt increases with the volatility of uninsurable income idiosyncratic risk to the extent that the increase in income inequality observed in some industrialized countries has been associated with higher idiosyncratic risk the paper suggests another potential mechanism for the rise in public debt jel d31 e62 f65 h63

education democracy and growth abstract this note presents a model of endogenous growth where redistribution determined by a political equilibrium is in the form of public education it is shown that there need not be a negative relationship between growth and redistribution as public education increases the level of human capital in the conomy and at the same time tends to produce a more even income distribution

optimal fiscal and monetary policy in an economy without capital abstract this paper is concerned with the structure and time consistency of optimal fiscal and monetary policy in an economy without capital in a dynamic context optimal taxation means distributing tax distortions over time in a welfare maximizing way for a barter economy our main finding is that with debt commitments of sufficiently rich maturity structure an optimal policy if one exists is time consistent in a monetary economy the idea of optimal taxation must be broadened to include an inflation tax and we find that time consistency does not carry over an optimal inflation tax requires commitment by rules in a sense that has no counterpart in the dynamic theory of ordinary excise taxes the reason time consistency fails in a monetary economy is that nominal assets should from a welfare maximizing point of view always be taxed away via an immediate inflation in a kind of capital levy this emerges as a new possibility when money is introduced into an economy without capital

a formalisation and test of the factor productivity explanation of international differences in service prices this paper extends and integrates previous models of the determinants of international differences in the prices of services relative to tradable commodities the authors provide a model capable of identifying the effects of differences in total factor productivity on service price differences separately from the effects of factor endowment differences they propose a method for measuring these factor productivity difference effects and apply this to a sample of sixty countries in 1980 the authors results provide support both for the endowment difference and productivity difference explanations suggesting that in this context at least the two hypotheses are complements rather than competitors copyright 1996 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

on exchange rates nominal and real abstract the paper first develops an australian commodity currency exchange rate model which is extended to deal with real exchange rates as well the nominal and real exchange rate versions are then tested on swiss data for the post bretton woods period while the model tracks the swiss franc nominal exchange rate vis a vis the dollar and the major european currencies very well swiss ppp real exchange rates are found to be heavily contaminated with measurement error as that error explains the large co movements in nominal and ppp real exchange rates those co movements are largely irrelevant to the ppp debate

foreign aid economic structure and dependence abstract an inflow of foreign capital leads to structural changes in the economy by lowering the relative price of tradable to non tradable goods it induces a decline of the relative share of tradables in the country s production the effect on consumption shares is less obvious since price and income effects may tend to be offsetting the existence of foreign aid also establishes a dependence of the economy on the outside world estimates of the degree of such dependence through the use of national accounts aggregates would be biased by the afore mentioned effect on relative prices hence specifically estimates of time tends based on the use of current prices may lead to different conclusions from those which employ constant prices for comparison the inferences of this paper are derived in a simple two sector small country model the concreteness and probable relevance of the main propositions are then demonstrated by empirical illustrations

do relative prices of non traded goods determine long run real exchange rates in this paper the long run assumptions of so called equilibrium models of real exchange rates are investigated the assumption of purchasing power parity for tradable goods common to this class of models implies that the real exchange rate is a function of the relative prices of nontraded goods in the two countries while purchasing power parity for tradable goods is not directly testable exploitation of wholesale and consumer prices allows for direct estimation of the reduced form cointegration tests are performed for twenty one bilateral relationships while much of the evidence is consistent with the predictions of equilibrium models results are far from conclusive

terms of trade and real exchange rates the canadian evidence abstract this paper presents empirical evidence linking the canada us real exchange rate with the terms of trade using recently developed econometric methods for nondashstationary data we find that the real exchange rate is cointegrated with terms of trade variables and that causality runs from the terms of trade to the exchange rate we then construct a simple exchange rate equation that satisfies several specification tests and performs better than a random walk in post sample forecasting experiments the results suggest that much of the variation in the real exchange rate is attributable to movements in the terms of trade and that the influence of monetary factors is secondary

enterprise inequality and economic development we characterize an equilibrium development process driven by the interaction of the distribution of wealth with credit constraints and the distribution of entrepreneurial skills when efficient entrepreneurs are relatively abundant a traditional development process emerges in which the evolution of macroeconomic variables accord with empirical regularities and income inequality traces out a kuznets curve if instead efficient entrepreneurs are relatively scarce the model generates long run distributional cycles driven by the endogenous interaction between credit constraints entrepreneurial efficiency and equilibrium wages

why higher takeover premia protect minority shareholders posttakeover moral hazard by the acquirer and free riding by the target shareholders lead the former to acquire as few sharcs as necessary to gain control as moral hazard is most severe under such low ownership concentration inefficiencies arise in successful takeovers moreover share supply is shown to be upward sloping rules promoting ownership concentration limit both agency costs and the occurrence of takeovers furthermore higher takeover premia induced by competition translate into higher ownership concen tration and are thus beneficial finally one share one vote and simple majority are generally not optimal and socially optimal rules need not emerge through private contracting

on the impact of volatility on the real exchange rate terms of trade nexus revisiting commodity currencies abstract the aim of this paper is to study the relationship between terms of trade and real exchange rates in commodity producing countries on both the short and the long run we investigate potential non linearity in the real exchange rate terms of trade nexus according to the level of volatility in commodity and financial markets to this end we consider a panel of 68 commodity exporters split in sub samples of advanced intermediate and low income countries we first show that there is a long run relationship between real exchange rates and terms of trade taking also into account productivity and net foreign assets then we run panel smooth transition regressions to estimate the adjustment process of the real effective exchange rate to its equilibrium value depending on different proxies of volatility our results show that only advanced oil exporters currencies are sensitive to changes in terms of trade in the short run especially when volatility is high on commodity markets

consumption and real exchange rates in dynamic economies with non traded goods abstract we examine the possibility that non traded goods may account for several striking features of international macroeconomic data large persistent deviations from purchasing power parity small correlations of aggregate consumption fluctuations across countries and substantial international real interest rate differentials a dynamic exchange economy is used to show that non traded goods in principle can account for each of these phenomena in the theory there is a close relation between fluctuations in consumption ratios and those in bilateral real exchange rates but we find little evidence for this relation in time series data for eight oecd countries

income and wealth heterogeneity in the macroeconomy how do movements in the distribution of income and wealth affect the macroeconomy we analyze this question using a calibrated version of the stochastic growth model with partially uninsurable idiosyncratic risk and movements in aggregate productivity our main finding is that in the stationary stochastic equilibrium the behavior of the macroeconomic aggregates can be almost perfectly described using only the mean of the wealth distribution this result is robust to substantial changes in both parameter values and model specification our benchmark model whose only difference from the representative agent framework is the existence of uninsurable idiosyncratic risk displays far less cross sectional dispersion and skewness in wealth than u s data however an extension that relies on a small amount of heterogeneity in thrift does succeed in replicating the key features of the wealth data furthermore this extension features aggregate time series that depart significantly from permanent income behavior

on the optimal taxation of capital income abstract we show that in models in which labor services are supplied jointly with human capital the chamley and judd result on zero capital income taxation in the limit extends to labor taxes as long as accumulation technologies are constant returns to scale moreover for a class of widely used preferences consumption taxes are zero in the limit as well however we show by the construction of two examples that these results no longer hold for certains types of restrictions on tax rates or if there are profits generated journal of economic literatureclassification numbers e62 h21

production subsidies and redistribution abstract who gains from stimulating output we explore a dynamic model with production subsidies where the population is heterogeneous in one dimension wealth there are two channels through which production subsidies redistribute resources across the population first poorer agents gain from a rise in wages since to the extent there is an operative wealth effect in labor supply they work harder second because a current output boost will raise consumption today relative to the future thus lowering real interest rates poor agents gain in relative terms since their income is based less on interest income we examine optimal redistribution from the perspective of an arbitrary consumer in the population we show that if this consumer has commitment at time zero to set all present and future subsidy rates and for a class of preferences that admits aggregation in wealth then output stimulation and hence redistribution will only occur at time zero after that subsidies are zero a byproduct of our analysis of this environment is a median voter theorem with direct voting over subsidy sequences at time zero the sequence preferred by the median wealth consumer is the unique outcome we also study lack of commitment since interest rate manipulation is associated with time inconsistency we analyze this case formally by looking at the markov perfect time consistent equilibrium in a game between successive identical decision makers e g the median agent here subsidies persist they are constant over time and are more distortionary than under commitment moreover whereas under commitment asset inequality changes initially in favor of the consumer who decides on policy it does not under lack of commitment

equilibrium welfare and government policy with quasi geometric discounting abstract we consider a representative agent equilibrium model where the consumer has quasi geometric discounting and cannot commit to future actions we restrict attention to a parametric class for preferences and technology and solve for time consistent competitive equilibria globally and explicitly we then characterize the welfare properties of competitive equilibria and compare them to that of a planning problem the planner is a consumer representative who without commitment but in a time consistent way maximizes his or her present value utility subject to resource constraints the competitive equilibrium results in strictly higher welfare than the planning problem whenever the discounting is not geometric journal of economic literature classification numbers e21 e61 e91

cointegration analysis with structural breaks and deterministic trends an application to the canadian dollar this article applies recent developments in cointegration analysis with structural breaks and deterministic trends to analyse the relationship between the real canada us exchange rate and commodity prices previous empirical studies disagree on whether these variables are cointegrated the root of disagreement could be in the handling of deterministic trends and potential structural breaks i find that even after controlling for these matters the question of whether the real exchange rate and commodity prices are cointegrated for canada remains unresolved

consumption savings decisions with quasi geometric discounting we study the consumption savings problem of an infinitely lived rational consumer who has time inconsistent preferences in the form of quasi geometric discounting the consumer operates a weakly concave production function and must simply divide current resources into current consumption and savings there is no uncertainty a solution to the consumer s problem is a subgame perfect equilibrium of a dynamic game between the consumer s successive selves we show that this game has a continuum of equilibria in stationary markov strategies not only is the stationary point of the consumer s asset holdings indeterminate but each stationary point has a continuum of dynamic paths converging to it the savings policy rules underlying these dynamic paths are step functions

public debt in economies with heterogeneous agents abstract we study public debt in competitive equilibria in which a government chooses transfers and taxes optimally and in addition decides how thoroughly to enforce debt contracts if the government enforces perfectly asset inequality is determined in an optimum competitive equilibrium but the level of government debt is not welfare increases if private debt contracts are not enforced borrowing frictions let the government gather monopoly rents that come from issuing public debt without facing competing private borrowers regardless of whether the government chooses to enforce private debt contracts the level of initial government debt does not affect an optimal allocation

nobody s business but my own self employment and small enterprise in economic development abstract in most poor countries small firms and self employment are the dominant forms of business enterprise even in the manufacturing sector for rich countries in contrast self employed people account for very small shares of manufacturing employment and output this paper builds on lucas 1978 on the size distribution of business firms bell journal of economics 9 2 508 523 to ask whether structural changes of this kind are driven by productivity differences a model calibrated to japanese time series data is shown to mimic key features of cross country and time series data the results support the idea that changes in aggregate productivity account for much of the cross country variation in establishment size and self employment rates

globalisation and factor returns in competitive markets abstract the standard competitive trade model extended to include many goods and factors is used to analyze the effect of goods and factor market integration on average international disparities in the real returns of internationally immobile factors it is shown that goods market integration decreases international real return differentials for all factors we derive sufficient conditions for this result to hold for the subgroup of internationally immobile factors as well while there is a presumption for similar results to hold with international factor market integration we show that this is true for international migration but in general not for international investment

structural adjustment and peasant agriculture in bolivia abstract this article examines how small farmers and their subsistence economy have fared under the policy reforms implemented since 1985 in bolivia the main post reform obstacles to increases in small farmer productivity and income are identified the analysis focuses on the comparison of incen tives and policies before and after the introduction of the new economic policy of 1985

immigration and real wages this paper derives conditions under which immigration may raise nominal and real wages in a small open economy the mechanism for such a paradoxical outcome is a demand induced increase in the prices of labour intensive non traded goods

on the size of u s government political economy in the neoclassical growth model we study a dynamic version of meltzer and richard s median voter model of the size of government taxes are proportional to total income and they are redistributed as equal lump sum transfers voting takes place periodically over time and each consumer votes for the tax rate that maximizes his equilibrium utility we calibrate the model to u s data key elements in the calibration are the income and wealth distribution and the parameters governing the leisure and consumption choices the total size of transfers predicted by our political economy model is quite close to the size of transfers in the data

barriers to investment in polarized societies i present a tractable dynamic model of political economy where disagreements about the composition of public spending result in implementation of short sighted policies the relative price of investment to consumption is excessively large in equilibrium due to over taxation investment rates are too low which slows down growth along the transition in the long run this results in output consumption and welfare being inefficiently low the larger is the degree of polarization the greater is the inefficiency political stability mitigates the effects of polarization by making the incumbent internalize the dynamic inefficiencies introduced by the choice of growth retarding policies

the determination of the real exchange rate the productivity approach abstract this paper explains deviations of exchange rates from purchasing power parity with the differences between countries of the relative growth rates of labor productivity between traded and nontraded sectors two cases are considered germany and japan versus their respective major trading partners the results show that the time series methodology yields a more favorable confirmation of the productivity differential model than the cross section regressions in the literature

how to spend it resource wealth and the distribution of resource rents natural resource revenues differ from other government revenues both in their time profile and in their political and legal status they are volatile and exhaustible and belong to all citizens of the country in which they are located this paper discusses the theory of natural resource revenues and examines expenditure practices in a range of resource rich countries it considers both the distributional impact and the efficiency of expenditure policies focusing on the extent to which they succeed in providing all citizens with their share of the benefits due to natural resources

median voter equilibria in the neoclassical growth model under aggregation we study a dynamic version of meltzer and richard s median voter model where agents differ in wealth taxes are proportional to income and are redistributed as equal lump sum transfers voting occurs every period and each consumer votes for the tax that maximizes his welfare we characterize time consistent markov perfect equilibria twofold first restricting utility classes we show that the economy s aggregate state is mean and median wealth second we derive the median voter s first order condition interpreting it as a tradeoff between distortions and net wealth transfers our method for solving the steady state relies on a polynomial expansion around the steady state

what is middle class about the middle classes around the world we expect a lot from the middle classes jim frederick writing in time magazine in 2002 stated china s burgeoning middle class holds the key to the future of the country in a more academic vein easterly 2001 concludes based on a comparison of a large number of countries that countries that have a larger middle class tend to grow faster at least if they are not too ethnically diverse in another article birdsall graham and pettinato 2000 rue the shrinking of the middle class the backbone of both the market economy and of democracy in most advanced societies in the face of burgeoning globalization the economic historian david landes writing about the wealth and poverty of nations 1998 explains england s early ascendancy in terms of the great english middle class of the eighteenth and nineteenth centuries of course there is nothing new about this faith in the middle class it follows a long line of theorizing going back at least to max weber 1905 at least three distinct arguments are traditionally made in one new entrepreneurs armed with a capacity and a tolerance for delayed gratification emerge from the middle class and create employment and productivity growth for the rest of society for a formalization of this argument see acemoglu and zilibotti 1997 in a second perhaps more conventional view the middle class is primarily a source of vital inputs for the entrepreneurial class it is their middle class values their emphasis on the accumulation of human capital and savings that makes them central to the process of capitalist accumulation for example doepke and zilibotti 2005 2007 the third view a staple of the business press emphasizes the middle class consumer the consumer who is willing to pay a little extra for quality in this view the middle class demand for quality consumer goods feeds investment in production and marketing which in turn raises income levels for everyone murphy shleifer and vishny 1989 1 this essay asks what we should make of these arguments in the context of today s developing countries starting from data on patterns of consumption and investment by the middle class we look for what is distinct about the global middle class especially when compared to the global poor defined as those whose per capita daily consumption valued at purchasing power parity exchange rates is below 2 a day who were the subject of a previous essay in this journal banerjee and duflo 2007b in particular is there anything special about the way the middle class spend their money earn their incomes or bring up their children

purchasing power parity and real factors it is acknowledged that purchasing power parity ppp fails in empirical tests the position adopted is that real factors are an omitted variable from the ppp relationship and are the cause of divergences from ppp the real exchange rate as being determined by supply and demand shift factors as in stockman 1987 and neary 1988 is modelled we then empirically estimate a real exchange rate equation and use the fitted value as a generated regressor in tests of ppp it is demonstrated that when changes in the real exchange rate are incorporated into the ppp relationship ppp improves

does euro or dollar pegging impact the real exchange rate the case of oil and commodity currencies the aim of this paper is to investigate the equilibrium exchange rates for commodity and oil currencies as well as the discrepancies of their observed exchange rates to these equilibriums to this end first we estimate a long term relationship between the real effective exchange rate and economic fundamentals including the commodity terms of trade the estimation relies on panel cointegration techniques and covers annual data from 1980 to 2007 our results show that real exchange rates co move with commodity prices in the long run and respond to oil price somewhat less than to commodity prices second we assess the degree of misalignment of these currencies as the gap between their observed exchange rate and the estimated equilibrium exchange rate we show that these misalignments are not significantly related to the exchange rate regimes adopted by the countries either pegged or floating however for pegged currencies the size of misalignments significantly depends on the anchor currency either the euro or the dollar a comparison of misalignments of pegged commodity and oil currencies across different periods confirms these results during periods of dollar euro overvaluation currencies pegged to the dollar euro tend to be overvalued the reverse being true when the dollar euro is undervalued consequently pegged currencies are often driven away from their equilibria by wild fluctuations in the key currencies on which they are anchored

on the efficiency and equity trade off abstract the concept of policy measures that create a potential pareto improvement has dominated normative economics the use of this concept in welfare economics relies on the availability of discriminatory lump sum transfers in such a way that the implementation of the efficient policy measure leads to a pareto movement in the economy however most studies of efficient policies preclude by assumption the existence of lump sum taxation this paper proposes in economies amenable to gorman aggregation one simple methodology to rank alternative allocations in terms of their distributional implications in a world with no lump sum transfers this methodology is simple because it is independent of the distribution of characteristics in the economy then for a specific policy measure it can be easily identified whether it implies an equity efficiency trade off the method is illustrated by analyzing the effects on inequality of the elimination of capital taxation the reduction of the inflation tax and the liberalization of capital movements in a small open economy

macro policy responses to natural resource windfalls and the crash in commodity prices policy prescriptions for managing natural resource windfalls are based on the permanent income hypothesis none of the windfall is invested at home and saving in an intergenerational swf is dictated by smoothing consumption across different generations furthermore with dutch disease effects the optimal response is to intertemporally smooth the real exchange rate smooth public and private consumption and limit sharp fluctuations in the intersectoral allocation of production factors we show that these prescriptions need to be modified for the following reasons first to cope with volatile commodity prices precautionary buffers should be put in a stabilisation fund second with imperfect access to capital markets the windfall must be used to curb capital scarcity invest domestically and bring consumption forward third with real wage rigidity consumption must also be brought forward to mitigate transient unemployment fourth the real exchange rate has to temporarily appreciate to signal the need to invest in the domestic economy to gradually improve the ability to absorb the extra spending from the windfall fifth with finite lives the timing of handing back the windfall to the private sector matters and consumption and the real exchange rate will be volatile finally with nominal wage rigidity we show that a taylor rule is a better short run response to a crash in commodity prices than a nominal exchange rate peg

vested interests in a positive theory of stagnation and growth we study a positive theory of stagnation and growth aimed at understanding the large variations in growth outcomes across actual economies the theory points to the fundamental role played by vested interests in determining policies which are key to the growth process some agents seek to prevent the adoption of new technologies we develop a model of technology adoption and show how technological innovation may sow the seeds of its own destruction in particular we find that the equilibrium is characterized by a long cycle of stagnation and growth over this cycle incumbents are phased out of the economy will new innovation occur in formalizing our theory we make a methodological contribution by characterizing dynamic voting equilibria when voters must forecast the effects of different current policies on future prices and policy outcomes

the risk free rate in heterogeneous agent incomplete insurance economies abstract why has the average real risk free interest rate been less than one percent the question is motivated by the failure of a class of calibrated representative agent economies to explain the average return to equity and risk free debt i construct an economy where agents experience uninsurable idiosyncratic endowment shocks and smooth consumption by holding a risk free asset i calibrate the economy and characterize equilibria computationally with a borrowing constraint of one year s income the resulting risk free rate is more than one percent below the rate in the comparable representative agent economy

the costs and benefits of balanced budget rules lessons from a political economy model of fiscal policy this paper analyzes the impact of a balanced budget rule that requires that legislators do not run deficits in the political economy model of battaglini and coate 2008 the main finding is that the rule leads to a gradual reduction in the level of public debt legislators reduce debt in periods when the demand for public goods is relatively low they do so because the rule by restricting future fiscal policies raises the expected costs of carrying debt whether the rule increases citizen welfare depends on a comparison of the benefits of a lower debt burden with the costs of greater volatility in taxes and less responsive public good provision a quantitative version of the model is developed in which costs and benefits can be evaluated a welfare loss results if the debt level when the rule is imposed lies in the support of the long run distribution associated with the unconstrained equilibrium

a theory of trickle down growth and development this paper develops a model of growth and income inequalities in the presence of imperfect capital markets and it analyses the trickle down effect of capital accumulation moral hazard with limited wealth constraints on the part of the borrowers is the source of both capital market imperfections and the emergence of persistent income inequalities three main conclusions are obtained from this model first when the rate of capital accumulation is sufficiently high the economy converges to a unique invariant wealth distribution second even though the trickle down mechanism can lead to a unique steady state distribution under laissez faire there is room for government intervention in particular redistribution of wealth from rich lenders to poor and middle class borrowers improves the production efficiency of the economy both because it brings about greater equality of opportunity and also because it accelerates the trickle down process third the process of capital accumulation initially has the effect of widening inequalities but in later stages it reduces them in other words this model can generate a kuznets curve

factor shares and savings in endogenous growth in models of steady investment driven growth an individual s propensity to save depends on how much of his income is drawn from accumulated factors of production capital rather than from nonaccumulated factors when agents are heterogeneous in this respect growth oriented policies have distributional consequences and in the absence of lump sum redistribution their implementation faces political constraints if the median voter is capital poor relative to the economy s representative agent political interactions tend to slow down growth when policy acts on capital s income share and tend to accelerate it when investment subsidies are the policy instrument of choice copyright 1993 by american economic association

optimal taxation of capital income in general equilibrium with infinite lives this paper analyzes the optimal tax on capital income in general equilibrium models of the second best agents have infinite lives and utility functions which are extensions from the koopmans form the population is heterogeneous the important property of the models is the equality between the social and the private discount rates in the long run i find that the optimal tax rate is zero in the long run for a special case of additively separable utility functions i then determine the tax rates along the dynamic path and conditions that are sufficient for the local stability of the steady state

boom goes the price giant resource discoveries and real exchange rate appreciation we estimate the effect of giant oil and gas discoveries on bilateral real exchange rates the size and plausibly exogenous timing of such discoveries make them ideal for identifying the effects of an anticipated resource boom on prices we find that a giant discovery with the value of a country s gdp increases the real exchange rate by 14 within 10 years following the discovery the appreciation is nearly exclusively driven by an appreciation of the prices of non tradable goods we show that these empirical results are qualitatively and quantitatively in line with a calibrated model with forward looking behaviour and dutch disease dynamics

commodity currencies and the real exchange rate abstract this paper shows that a change in the terms of trade of a commodity exporting country could cause the relative price of nontraded goods to rise or fall depending on the strength of income and substitution effects