technical change land quality and income distribution a general equilibrium analysis this paper investigates the distributional effects of technical progress in agriculture a small computable general equilibrium model is developed in which agricultural production occurs in two environments with fixed land resources of different quality the analytical structure permits not only the rate but also the factor biases of technical change to differ between environments distributional results are generated for several classes of households distinguished both by their ownership of factors and by their consumption patterns the results demonstrate that technical change produces distributional outcomes which are highly sensitive to its factor biases and to prior differences in land quality

the excise tax effects of the property tax abstract this paper constructs a theory of how differences across regions in property tax rates affect product prices and factor prices for a model where labor and capital are perfectly mobile between regions it is shown that consumers residing in different regions face the same nontraded good prices even when property tax rates differ across regions

interconnectivity of communications networks and international trade in this study a multi country model of trade is developed that captures the role of country specific communications network interconnectivity which enhances trade in intermediate business services the number of countries connected to inter nationally interconnected networks is found to determine the structure of comparative advantage that is countries with interconnected networks have a comparative advan tage in the good that requires business services provided via networks in connected countries producers of that good benefit from the efficient transmission of business services this research also demonstrates that countries whose country specific net works are not connected to the interconnected networks may become worse off as the

optimal bankruptcy code a fresh start for some abstract what is the optimal consumer bankruptcy law i answer this question using an incomplete markets life cycle model with a planner who can choose state contingent bankruptcy costs i develop two main theoretical characterizations first whenever debt discharge is allowed it should occur without cost second bankruptcy should always be allowed for highly indebted households quantitatively the optimal policy can generate a welfare gain as large as 11 6 however attractive informal default asymmetric information and moral hazard can reduce the welfare gain to as little as 0 7

trade and factor movements with three factors and two goods abstract with three factors and two goods there are two extreme and one middle factor regardless of technical complementaries in the individual production functions the extreme factors must be enemies and the middle factor the other factor s friend with constant product prices

backward incidence of pollution damage compensation policy abstract the backward incidence of higher rates of compensation paid for damage on a factor of production is examined in a two sector three factor model with a linear pollution damage function on labour endowment the results implied by the stolper samuelson theorem are obtained with a consequent decrease in pollution and national income provided that the polluting and nonpolluting sectors are respectively intense in capital and labour and the complement relation between pollution and labour are assumed a geometric interpretation of the results is also provided

investment the current account and the relative price of non traded goods in a small open economy abstract this paper incorporates traded and non traded investment expenditure into an infinite horizon setting with optimizing economic agents extending previous research that has incorporated traded and non traded investment into a two period setting the paper analyzes the dynamic adjustment of the relative price of non traded output the market price of capital and the current account following exogenous shocks to the system the exogenous shocks considered by the paper include permanent transitory and anticipated changes in an income tax and an investment subsidy as well as changes in the level of government purchases of traded and non traded output

the impact of development on women a specific factors analysis abstract the specific factors model is employed in this paper as a means of explaining how economic development may serve to diminish women s welfare three changes associated with the development process are analyzed for their effect on women s real and relative wage 1 an expansion of trade induced by an improvement in the terms of trade 2 technological change and 3 an increase in female labor force participation

default and punishment in general equilibrium we extend the standard model of general equilibrium with incomplete markets to allow for default and punishment by thinking of assets as pools the equilibrating variables include expected delivery rates along with the usual prices of assets and commodities by reinterpreting the variables our model encompasses a broad range of adverse selection and signalling phenomena in a perfectly competitive general equilibrium framework perfect competition eliminates the need for lenders to compute how the size of their loan or the price they quote might affect default rates it also makes for a simple equilibrium refinement which we propose in order to rule out irrational pessimism about deliveries of untraded assets we show that refined equilibrium always exists in our model and that default in conjunction with refinement opens the door to a theory of endogenous assets the market chooses the promises default penalties and quantity constraints of actively traded assets

financial intermediary capital we propose a dynamic theory of financial intermediaries that are better able to collateralize claims than households that is have a collateralization advantage intermediaries require capital as they have to finance the additional amount that they can lend out of their own net worth the net worth of financial intermediaries and the corporate sector are both state variables affecting the spread between intermediated and direct finance and the dynamics of real economic activity such as investment and financing the accumulation of net worth of intermediaries is slow relative to that of the corporate sector the model is consistent with key stylized facts about macroeconomic downturns associated with a credit crunch namely their severity their protractedness and the fact that the severity of the credit crunch itself affects the severity and persistence of downturns the model captures the tentative and halting nature of recoveries from crises

default and bankruptcy in an entrepreneurial economy with incomplete markets abstract we build a general equilibrium model with incomplete markets production default and bankruptcy the existence of equilibrium is proved theoretically under appropriate conditions we show that the reduced form entrepreneurial equilibrium and profit maximization entrepreneurial equilibrium as defined by magill and quinzii 1996 are equivalent in addition we find an inverse relationship between the economy real interest rate and the probability of default this result is empirically tested by applying the cox proportional hazards model with time dependent covariates for a sample of sole proprietorships unsecured credit operations in the brazilian economy the estimates confirm the findings from the theoretical model

private capital flows capital controls and default risk abstract what has been the effect of the shift in emerging market capital flows toward private sector borrowers are emerging market capital flows more efficient if not can controls on capital flows improve welfare this paper shows that the answers depend on the form of default risk when private loans are enforceable but there is the risk that the government will default on behalf of all residents private lending is inefficient and capital controls are potentially pareto improving however when private agents may individually default capital flow subsidies are potentially pareto improving

the rybczynski theorem in the three factor two good model abstract this paper proves that if each factor is normal in the three factor two good model the expansion of a factor endowment always increases at constant commodity prices the output of the commodity which uses the expending factor most intensively

leverage cycles and the anxious economy ing opportunities for emerging economies their access to international markets has turned out to be very volatile with frequent periods of market closures even worse as we will show emerging economies with sound fundamentals are the ones that issue less debt during these closures the goal of this paper is to present a theory of asset pricing that will shed light on the problems of emerging assets like emerging markets that are not yet mature enough to be attractive to the general public their marginal buyers are liquidity constrained investors with small wealth relative to the whole economy who are also marginal buyers of other risky assets we will use our theory to argue that the periodic problems faced by emerging asset classes are sometimes symptoms of what we call a global anxious economy rather than of their own fundamental weaknesses

optimal security design how should new securities be designed traditional theories have little to say on this the literature on capital structure and general equilibrium theories with incomplete markets take the securities firms issue as exogenous this paper explicitly incorporates the transaction costs of issuing securities and develops a model where the instruments that are traded are chosen optimally and the economy s market structure is endogenous among other things it is shown that the firm s income stream should be split so that in every state all payoffs are allocated to the security held by the group that values them most this abstract was borrowed from another version of this item

liquidity constrained markets versus debt constrained markets this paper compares two different models in a common environment the first model has liquidity constraints in that consumers save a single asset that they cannot sell short the second model has debt constraints in that consumers cannot borrow so much that they would want to default but is otherwise a standard complete markets model both models share the features that individuals are unable to completely insure against idiosyncratic shocks and that interest rates are lower than subjective discount rates in a stochastic environment the two models have quite different dynamic properties with the debt constrained model exhibiting simple stochastic steady states while the liquidity constrained model has greater persistence of shocks

factor price convergence in the late nineteenth century the authors examine a dramatic historical episode of factor price convergence in the late nineteenth century their focus is convergence between old world and new and the analysis centers on land and labor wage rental ratios boomed in the old world and collapsed in the new moving the resource rich labor scarce new world closer to the resource scarce labor abundant old world the authors use econometrics and simulations to identify proconvergence forces which include commodity price convergence factor accumulation and factor saving biases the results confirm that open economy characteristics and international market integration are important sources of convergence copyright 1996 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

the shadow price of foreign exchange with minimum wages abstract this note derives the shadow price of foreign exchange in a small open economy with minimum wage unemployment under tariffs quotas and voluntary export restraints the analysis is conducted in a dual general equilibrium framework with many goods and factors

income inequality and international migration the purpose of this paper is to analyse the impact of international factor movements on the personal distribution of income in order to get clearcut results we use a simple model of trade and migration in which there are two traded goods and three factors for any given country one of the traded goods corresponds to exports and the other to imports the three factors include capital and two types of labour skilled and unskilled we focus mainly on the alternative results of international migration of the two types of labour the geographical focus is worldwide excerpt

international labor flows and national wages when income levels of some group in the economy fall behind those of others the blame frequently is cast on the nature of international trading relationships such has been the case recently in the united states with the struggle to maintain real wages for relatively lessskilled workers much of the debate has asked how changes in world prices or in technology at home or abroad have altered wage rates see e g susan collins 1996 jones and engerman 1996 in this note we focus on another potential culprit immigration and probe more widely into past historical experience in the united states and other countries when inflows of labor from abroad disturb wage rates for nationals such international labor flows could serve to enhance rather than to depress the earnings of the country s own laborers if the question addressed concerns the effects of immigration on the welfare of the original inhabitants of a country a disarmingly simple answer was provided some years ago by harry johnson 1967 as long as immigrants bring an accumulated bundle of labor and physical or human capital that is different from that possessed by local residents the latter must gain from immigration this is the basic gains from trade argument appropriate only if the country originally did not engage in any other form of trade and if all residents held balanced portfolios of capital and labor as well it ignores the social costs incurred and extra taxes collected when migrants flow into a country in this note we focus not on aggregate welfare effects but on the effect of immigration on the return to some homogeneous national group of laborers this question is the one that most sharply divides the views of labor economists from those of trade economists on the one hand increases in the supply of labor would seem naturally to depress the return to labor but in the basic heckscher ohlin trade model with two factors and two produced commodities an inflow of labor can be absorbed with absolutely no change in wage rates as long as the terms of trade remain undisturbed we begin by asking what some basic theoretical models tell us about this issue before turning to the historical record simple theory reveals that there are two basic attributes of immigration that affect income distribution relatively how substitutable immigrant labor is for the national labor force and the occupations in which immigrants are allowed to work

resource rights and markets in a general equilibrium model of production rights to a free resource lead to distributional deadweight losses in partial equilibrium the present paper examines related distortions in a general equilibrium model of production with output prices constant for the small open economy the free resource can result in lower output than a market with weak substitution in the other sector the free resource also leads to a convex production frontier implying a price increase lowers output in the sector regarding policy an import tariff export subsidy or price support would lower sector output these general equilibrium distortions increase the incentives to favor resource markets over rights

import restrictions capital taxes and welfare this paper develops a two good small country general equilibrium model with trade restrictions i e a tariff an import quota or a voluntary export restraint ver inter national capital mobility and taxes on the rate of return to capital within this context it examines the price and welfare effects of capital taxes the second best policy towards capital in the presence of such trade restrictions and the welfare implications of trade liberalization in the presence of capital taxes the analysis demonstrates among other things that i the optimal policy towards capital is a zero tax when imports are quota constrained and is a tax under a tariff and a subsidy under a ver when the imported good is capital intensive and that ii an asymmetry exists between trade and capital movements liberalization under the various trade regimes

lack of recall and centralized monetary trade we introduce lack of recall of past transactions as an alternative assumption to anonymity in a model where trade is centralized in environments where there is an intertemporal lack of double coincidence of wants problem and lack ofcommitment lack of recall can give rise to monetary equilibria that dominate nonmonetary outcomes in terms of welfare

factor intensities and factor substitution in general equilibrium abstract this article examines how factor intensity rankings between industries and the economy wide asymmetry in the degree of factor substitution combine to influence the manner in which changes in relative commodity prices affect the factoral distribution of income the reciprocal influence of factor endowment changes on the composition of outputs is also discussed the analysis is undertaken in a general three factor two commodity framework the minimal sized model that allows both influences to affect factor prices and admits of the possibility of complementarity between factors factors which are good substitutes find their returns behave somewhat similarly when commodity prices change while factors which are complements experience strongly asymmetrical fortunes a crucial role is played by a comparison of the share of the middle factor in each sector

factor trade and goods trade world equilibria with trade in both goods and some factors are studied when international factor endowment differences are the cause of trade a generalized heckscher ohlin theorem is presented the goods trade patterns with and without factor trade are compared factor trade and goods trade tend to be substitutes complements if traded and non traded factors are cooperative non cooperative

the effect of liquidity constraints on consumption a cross sectional analysis this paper examines the effect of liquidity constraints on consumption expenditures using a single year cross section data set a reduced form equation for consumption is estimated on high saving households by the tobit procedure to account for the selectivity bias since high saving households are not likely to be liquidity constrained the estimated equation is an appropriate description of how desired consumption that would be forthcoming without liquidity constraints is related to the variables available in the cross section data when the reduced form equation is used to predict desired consumption the gap between desired consumption and measured consumption is most evident for young households

capital markets urban unemployment and land abstract this paper shows that the remarkable result by khan and naqvi that a reduction in the capital rental differential always improves welfare despite the presence of a rigid urban wage can be obtained only for the 2 2 harris todaro model in an extended harris todaro framework incorporating a third specific factor a decrease in a distortion may not necessarily be welfare improving

can public sector employment spur human capital acquisition abstract in a general equilibrium model of a product and an education sector we add government employment of educated labor for public goods provision and for political economy reasons education subsidy may cause fewer public goods and retard the product sector

a synthesis of the heckscher ohlin and the neoclassical models of international trade a comment abstract batra and casas 1976 have asserted that in the two sector three factor neoclassical model an increase in the supply of one factor at constant commodity prices will increase the output of the commodity using the expanding factor relatively intensively and thereby reduce the output of the other commodity the present note points out that there is a case against their assertion

international coordination of fiscal policy in limiting economies we examine the limiting behavior of cooperative and noncooperative fiscal policies as countries market power goes to zero we show that these policies converge if countries raise revenues through lump sum taxation however if there are unremovable domestic distortions such as distorting taxes there can be gains to coordination even when a single country s policy cannot affect world prices these results differ from the received wisdom in the optimal tariff literature the key distinction is that contrary to the tariff literature the spending decisions of governments are explicitly modeled

the missing link the ricardian approach to the factor endowments theory of trade this paper views all interpersonal trade as ricardian while all international trade reflects each country s factor endowment the model provides the logical link betwe en heckscher ohlin and ricardo the strength of the model is that it allows simpler and more robust theorems about trade welfare and fac tor payments factor price equalization holds universally and stolper samuelson is not tied to the number of goods or factors a key resul t is that the old mill theorem that the small country gains all from trade is incorrect trade patterns with three factors and two goods a re completely characterized copyright 1988 by american economic association

free trade and income redistribution in a three factor model of the u s economy the move toward free trade promises to alter the distribution of income in the u s labor groups generally do not favor the move toward free trade which can be characterized by the continuing decline in the price of manufactured goods relative to business services the present study predicts that unskilled labor in the u s will lose under a program of free trade using a general equilibrium model of production factor shares industry shares and estimates of substitution for skilled labor unskilled labor and capital are used to examine comparative statics the interplay of factor intensity and factor substitution in the three factor production structure has proven a considerable analytical challenge building on the textbook production model with two factors the third productive factor allows technical complementarity and creates a more complex pattern of factor intensity both factor intensity and factor substitution affect the qualitative nature of the comparative statics little is known about the model s quantitative properties a 3 x 3 model with outputs of the three major sectors agriculture manufacturing services is specified and a 3 x 2 model without agriculture is also examined factor substitution is estimated with production function across states skilled labor separated by various census categories cannot be aggregated with unskilled labor in any sector and constant returns to scale cannot be rejected as a null hypothesis additionally the three inputs capital labor skilled labor are all technical substitutes comparative static results follow a pattern suggested by factor intensity changing prices of goods generally have elastic effects on factor prices stolper samuelson results in other words have a quantitative weight price changes due to a program of free trade will significantly affect income distribution similarly rybczynski type results are quantitatively significant in that factor endowment changes have elastic effects on outputs the implication is that output patterns will differ significantly across freely trading partners elasticities of factor prices with respect to endowment changes on the other hand are very inelastic this inelasticity suggests that there would only be small long run effects of international migration capital flows or endowment differences on the international pattern of factor income this inelasticity is called near factor price equalization nfpe under nfpe freely trading countries will experience a vector of factor prices nearly equal to each other nfpe suggests that the qualitative effects of changing or different factor endowments

trade and communication costs two models in which communication costs are a cost to trade are investigated one model looks at the role of communication in determining the firms geographic extent in the use of local factor services communication costs are modelled as a quasi public good network in which communication services are provided by an average cost pricing monopolist the network technology is subject to increasing returns congestion effects and network externalities the second model focuses on communication for the purposes of international trade in goods with similar assumptions on the technology of communication as in the first model in this model an important distinction is made between international equilibrium and global equilibrium in both models the impact of reductions in communication costs on the market extent of firms trade volumes and productivity are examined the models have generic multiple equilibria with quite different welfare and comparative static properties

jointly optimal regulation of bank capital and liquidity in an economy with financial frictions banks endogenously choose excessive leverage and maturity mismatch in equilibrium as they fail to internalize the risk of socially wasteful fire sales macroprudential regulators can achieve efficiency with simple linear constraints which require less information than pigouvian taxes the liquidity coverage and net stable funding ratios of basel iii can implement efficiency additional microprudential regulation of leverage is required when bank failures are socially costly micro and macroprudential rules are imperfect substitutes optimally macroprudential policy reacts to systematic risk and credit conditions over the cycle while microprudential policy reacts to systematic and idiosyncratic risk

an energy factor proportions model of the us economy abstract a factor proportions model examines the effects of falling energy input and its rising price in the us economy based on a novel production function motivated by the definition of physical work this physical production function specifies separate interaction of energy and labor with capital estimated with annual data from 1951 to 2008 energy has a large output elasticity and inelastic own input demand a rising energy price lowers the return to capital in the general equilibrium even though capital is a moderate substitute for energy energy has robust comparative static elasticities linked to manufacturing in the general equilibrium

the role of intergenerational transfers in aggregate capital accumulation this paper uses historical u s data to directly estimate the contribution of intergenerational transfers to aggregate capital accumulation the evidence presented indicates that intergenerational transfers account for the vast majority of aggregate u s capital formation only a negligible fraction of actual capital accumulation can be traced to life cycle or hump savings a major difference between this study and previous investigations of this issue is the use of more accurate longitudinal age earnings and age consumption profiles these profiles are simply too flat to generate substantial life cycle savings this paper suggests the importance of and need for substantially greater research and data collection on intergenerational transfers life cycle models of savings that emphasize savings for retirement as the dominant form of capital accumulation should give way to models that illuminate the determinants of intergenerational transfers

stability of the mobile capital harris todaro model some further results a necessary and sufficient condition for stability is derived for the mobile capital harris todaro model of rural to urban migration in developing countries when land is a scarce factor in agriculture the stability condition when land is ignored that the urban sector comprising manufacturing industry and the urban unemployed be more capital abundant is no longer either necessary or sufficient for stability nevertheless this condition always enhances stability and it is sufficient though not necessary for stability in many circumstances e g when land is separable in production from labour and capital intuitive explanations of these conditions are provided excerpt

pareto optima and competitive equilibria with adverse selection and moral hazard this paper explores the extent to which standard general equilibrium analysis of pareto optima and of competitive equilibria can be applied to environments with moral hazard and adverse selection problems allowing for lotteries contracts with random components we first establish that an adverse selection insurance economy a moral hazard insurance economy a signaling economy and a private information labor market economy are all special cases of a simple general structure we then show that techniques for characterizing pareto optimal contracts as solutions to concave programming problems are useful and nice and appear to be broadly applicable allowing for lotteries we show how to characterize the optimal allocations for the adverse selection insurance and labor market economies we then show that standard existence and optimality theorems for competitive equilibria apply in the linear space containing lotteries if agents with characteristics which are distinct and privately observed at the time of initial trading enter the economy wide resource constraints in a homogeneous way other kinds of diversity are not critical for economies with moral hazard which satisfy the homogeneity condition competitive contract markets single out a subset of the optima and thus can be consistent with apparent unemployment and with a random allocation of labor supplied though all households are averse to risk the adverse selection insurance and signaling economies however do not satisfy the homogeneity condition and are difficult to decentralize efficiently with a price system

north south knowledge spillovers and competition convergence versus divergence abstract technology spillovers from high productivity countries in the north allow low productivity countries in the south to improve productivity in high tech sectors relatively easy however the south s share in world goods markets for high tech products is relatively low which reduces opportunities for learning by doing our simple ricardian endogenous growth model shows how the balance between toughness of competition in trade and the strength of north south spillovers determines whether productivity levels diverge partially converge or fully converge in the long run if convergence prevails the north is confronted with declining employment in high tech sectors temporary trade policy measures can turn a diverging economy into a converging one

trade and factor prices in a model of capital utilization in recent years there has been considerable work on the economics of capital utilization but the implications of endogenous capital utilization for trade and comparative advantage have not been worked out empirical research has revealed that there is a great deal of variation across countries in the willingness of employees to work during evening and night hours and on weekends and the partial equlibrium theory of optimal capital utilization shows that a willingness on the part of employees to work during abnormal hours can reduce the cost of production frequently by reducing the need for fixed capital the effects on production costs will depend of course on the wage premium demanded by workers for abnormal hours work it stands to reason therefore that recognition of the varying degrees of willingness of employees to work during abnormal hours will have important implications for comparative advantage and trade this paper will be concerned with the introduction of endogenous capital utilization into one of the sectors of the standard two factor two sector model of trade there are two fundamentally different ways in which this introduction can take place in the first approach as each firm increases its level of capital utilization it in effect imposes abnormal hours of work on its existing labor force and it must increase the wage premium for labor during abnormal hours in this model the firm s optimal level of capital utilization occurs where the increased wage premium from the increase in abnormal hours work balances the saving of capital costs from the increase in capital utilization in the second approach the firm regards as given the wage rates for normal hours and for abnormal hours work and therefore the wage premium for abnormal hours is also

international factor movements and the ramaswami argument in a succinct but classic article appearing in economica in 1968 ramaswami put forth an argument supporting the superiority of a policy that attracts foreign factors over a policy that allows a relatively abundant factor to emigrate in each case the active home country is assumed to levy taxes on factor flows so as to capture for itself the discrepancy in return to the same factor at home and abroad the asymmetry reflected by this policy ranking rests on a basic propeity of production functions the convexity of technology plus the ability of the active home country to hire or rent out factors at wages or rentals prevailing in the foreign country briefly put the ramaswami argument proceeds as follows suppose the active home country is capital abundant and has levied on optimal tax on earnings of its own capital operating abroad now consider repatriating this capital and allowing for the first time some inflow of foreign labour in particular suppose the home country allows a level of immigration identical to the labour force previously employed with the home capital that is being repatriated such a transfer of home capital and foreign labour out of the foreign country leaves factor proportions abroad undisturbed and thus does not alter the wage that must be paid to attract the requisite bundle of foreign workers although the home country thus avoids any increase in factor costs in foreign markets it can increase output since the capital labour ratiooriginally employed at home at high home wage rates is greater than the ratio in the freshly acquired bundle from abroad by adopting a uniform capital labour ratio over all factors now employed at home output and thus real income rises there may be even further gains to be had by allowing yet a different optimal level of immigration in the home country which has now banned capital exports 2 essential to the ramaswami argument is the ability of the home country to extract a bundle of factors previously employed abroad without disturbing factor prices in that country indeed jones coelho and easton 1983 have suggested that in the context of the ramaswami discussion the original argument could be pursued to suggest that the home country gains not only from repatriating its own capital but from actually encouraging foreign capital to be employed at home such a capital flow is admittedly uphill the home country would have to pay out more in rentals than such capital can earn at home despite this fact such an import of capital and labour in the same proportions found abroad does not alter foreign factor prices but does via the same ramaswami type argument on the convexity of the technology result in gains at home although ramaswami s own discussion starts with a repatriation of home capital previously invested abroad his argument can be applied directly to the foreign autarky factor endowment bundle if technology exhibits constant returns to scale and if all both factors are indeed internationally

a theorem on income distribution in a small open economy abstract if the number of productive factors exceeds the number of commodities produced changes in factor endowments and or any commodity price will alter factor prices in a way that depends both upon factor intensities and the degree of factor substitutability however bilateral factor intensity rankings for constant price industries by themselves restrict possible factor price changes if factors are ranked from most to least intensive in any such pair of industries all the gainers cannot be located at one end of the ranking

unemployment and trade liberalisation in contrast to the focus of the public debate over trade liberalisation on job losses there is a widespread view among economists that unemployment and trade issues should be considered separately this view cannot be justified theoretically and ignores the growing number of general equilibrium trade models with unemployment in a simple model with an exogenous wage floor trade liberalisation can lead to either gains or losses depending on the production technology severity of the factor market distortion factor intensities of the industries and conditions in trading partners definite results can be derived about gains from liberalising trade with lower wage floors about relative abundance of the unemployed factor dampening losses when trade is liberalised and about gains when the good which uses the unemployed factor is exported the theoretical models are then linked to the policy modelling literature using the example of recent australian controversies over liberalisation of trade in automobiles and textiles it is argued that trade liberalisation would be better advanced by including endogenous employment in trade policy simulation exercises and by discussing employment effects rather than brushing them aside as temporary adjustment problems or regional difficulties

efficiency and the role of default when security markets are incomplete this paper argues that default plays an important positive role in the economy if markets are incomplete and traders are only able to enter into contracts that they will be able to execute regardless of future events contingent contracting may be severely restricted moreover opening new markets may not relieve these restrictions default promotes efficiency in a way that opening new markets does not by making it possible for traders to enter into contracts that they will be able to execute with high probability but not with certainty copyright 1993 by american economic association

on efficient distribution with private information this paper is a study of the dynamics of the efficient distribution of consumption in an exchange economy with many consumers each of whom is subject to private idiosyncratic taste shocks we propose a recursive method for finding feasible allocations that are incentivecompatible and that are pareto optimal within this set the method is applied to several parametric examples we find that in an efficient allocation the degree of inequality continually increases with a diminishing fraction of the population receiving an increasing fraction of the resources we discuss the extent to which these allocations can be decentralized via market arrangements this paper is a study of the dynamics of the efficient distribution of consumption in an exchange economy with private information the economy we study has a constant endowment flow of a single non storable consumption good which is to be allocated each period among a large number of consumers each period these consumers experience unpredictable idiosyncratic privately observed taste shocks affecting their marginal utility of current consumption efficiency dictates that more resources be allocated to those consumers who in any given period have a high marginal utility of current consumption

agricultural supply response in the argentinean economy este trabajo tiene como objetivo estimar la forma reducida de una funcion de oferta agropecuaria de la economia argentina en el marco de un modelo de equilibrio general los resultados de la estimacion de la oferta agropecuaria con datos que cubren los anos 1939 1984 muestran que hay una elasticidad precio de oferta de largo plazo de aproximadamente 1 3 que es estadisticamente significativa y que la convergencia al estado estacionario se logra en aproximadamente nueve anos esta estimacion de la elasticidad de oferta agropecuaria es aproximadamente tres veces mas grande que estimaciones previas con modelos de equilibrio parcial

free trade and factor price polarization abstract factor price equalization between trading partners is perhaps the best known implication of the heckscher ohlin samuelson model of production and trade it has long been known that with more primary factors than goods this result is not necessary recent studies have investigated effects of changing prices on factor payments in the three factor two good trade model this short note emphasizes that when such an economy moves from autarky to free trade payment to a relatively cheap factor may fall polarizing factor prices conditions favoring this outcome are examined

the economics of immigration this literature review concerns the impact of immigration on the economy of the host country focusing on the experience of the united states the emphasis is on the period from the 1970s to the 1990s the author shows that research earlier in this period generally concluded that the economic effects of immigration were positive but that more recent research on later migrations have generally concluded that immigration may be having an adverse effect on the earnings of native unskilled workers and be placing an increased burden on welfare programs the importance of such economic analysis for the formulation of appropriate migration policies is stressed

optimal lending contracts and firm dynamics we develop a general model of lending in the presence of endogenous borrowing constraints borrowing constraints arise because borrowers face limited liability and debt repayment cannot be perfectly enforced in the model the dynamics of debt are closely linked with the dynamics of borrowing constraints in fact borrowing constraints must satisfy a dynamic consistency requirement the value of outstanding debt restricts current access to short term capital but is itself determined by future access to credit this dynamic consistency is not guaranteed in models of exogenous borrowing constraints where the ability to raise short term capital is limited by some prespecified function of debt we characterize the optimal default free contract which minimizes borrowing constraints at all histories and derive implications for firm growth survival leverage and debt maturity the model is qualitatively consistent with stylized facts on the growth and survival of firms comparative statics with respect to technology and default constraints are derived borrowing constraints are an important determinant of firm growth and survival 1 such constraints may arise in connection to the financing of investment opportunities faced by firms or temporary liquidity needs such as those required to survive a recession this paper develops a theory of endogenous borrowing constraints and studies its implications for firm dynamics in our model debt is constrained by the firm s limited liability and option to default a lending contract specifies an initial loan size future financing and a repayment schedule the choice of these variables in turn determines future growth the firm s future borrowing capacity and its ability and willingness to repay hence borrowing constraints and firm dynamics are jointly determined we study this dynamic design problem our model builds on thomas and worral s 1994 model of foreign direct investment at time zero a risk neutral borrower firm or entrepreneur has a project which requires a fixed initial set up cost every period the project yields revenues that increase with the amount of 1 there is considerable evidence suggesting that financing constraints are important determinants of firm dynamics gertler and gilchrist 1994 argue that liquidity constraints may explain why small manufacturing firms respond more to a tightening of monetary policy than do larger manufacturing firms perez quiros and timmermann 2000 show that in recessions smaller firms are more sensitive to the worsening of credit market conditions as measured by higher interest rates and default premia evans and jovanovic 1989 show that the liquidity constraints are essential in the decision to become an entrepreneur fazzari hubbard and petersen 1988 among others view financial constraints as an explanation for the dynamic behaviour of aggregate investment and cabral and mata 1996 are able to fit reasonably well the size distribution of portuguese manufacturing firms by estimating a simple model of financing constraints for surveys see hubbard 1998 and stein 2003

factor movements with three factors and two goods in the u s economy abstract ruffin s 1981 theoretical finding that extreme factors must be enemies and the middle factor must be a friend of both extreme factors with constant product prices in a three factor two good general equilibrium model is confirmed empirically for the united states results are used to explain the positions factor owners take on issues of factor movement policies

industrial shut downs and medium run factor intensity reversals while short run factor intensity reversals lead to industrial shut downs when there are two productive factors this paper shows that an industry can undo an intensity reversal over the medium run and avoid shutting down when there are three or more factors medium run adjustment begins with a capital fixed input and extends until it has become perfectly mobile j peter neary 1978 develops a picture of adjustment with two industries and two inputs where an industry must shut down following an intensity reversal the present study adds a third input skilled labor or natural resources to capital and labor

factor mobility trade and welfare abstract the paper develops a north south model which is driven by scale economies in the modern sector the model predicts that skilled and unskilled labor migrate from south to north and capital migrates from north to south migration of skilled labor and capital exhibits complementarity with trade while migration of labor may exhibit complementarity or substitutability if the terms of trade effects are ignored small movements of all factors affect the welfare of the population in south negatively and of that in north positively the effects of migration on the terms of trade are ambiguous in general

intertemporal distortions in the second best we consider a very general class of public nance problems that encompasses ramsey models of optimal taxation as well as economies with limited commitment private information and political economy frictions we identify a su cient condition to rule out permanent intertemporal distortions at the optimum if there exists an admissible allocation that converges to the rst best steady state then all intertemporal distortions are temporary in the second best we analyze a series of applications to illustrate the signi cance of this result

do tariffs protect specific factors it is shown that a tariff can lower payment to a productive factor used only in specific to the protected industry in a simple production model this may occur anytime the protected sector shares more than one common factor with the rest of the economy as seems most likely intuition based on the well known specific factors model where sectors share a single common factor should be modified whether specific factors effectively receive protection from tariffs becomes an empirical issue

welfare effects of migration in societies with indirect taxes income transfers and public good provision abstract we construct a general equilibrium trade model of a two class small open host or source country when consumption tax revenue finances the provision of a public good marginal migration reduces social welfare in the source country and raises it in the host when consumption tax revenue is equally distributed among domestic households in each country then migration has an ambiguous impact on social welfare in either country when tariff revenue in either country is either equally distributed among domestic households or it is used to finance the provision of a public good then migration has an ambiguous effect on social welfare in the host country and is expected to reduce social welfare in the source

immigration and native welfare we unify two approaches towards identifying native welfare effects of immigration one emphasizing the immigration surplus borjas 1995 1999 the other identifying a welfare loss due to terms of trade effects davis weinstein 2002 we decompose the native welfare effect of immigration into the standard complementarity effect augmented by a stolper samuelson effect and a terms of trade effect using a structural model with three skill classes we derive propositions on the wage and native welfare effects of various immigration scenarios a calibration based simulation reveals that the size of the inflow and immigrant income repatriation are key determinants of the welfare ranking of different immigration scenarios

debt constrained asset markets we develop a theory of general equilibrium with endogenous debt limits in the form of individual rationality constraints similar to those in the dynamic consistency literature if an agent defaults on a contract he can be excluded from future contingent claims markets trading and can have his assets seized he cannot be excluded from spot markets trading however and he has some private endowments that cannot be seized all information is publicly held and common knowledge and there is a complete set of contingent claims markets since there is complete information an agent cannot enter into a contract in which he would have an incentive to default in some state in general there is only partial insurance variations in consumption may be imperfectly correlated across agents interest rates may be lower than they would be without constraints and equilibria may be pareto ranked

accumulation of human capital in ldcs in the presence of unemployment this paper takes up an aggregative growth framework to study how human and physical capital evolve over time as households allocate their investment between the two assets in the context of unemployment of educated labor it develops a general equilibrium model of an economy with two sectors a composite good sector and a schooling sector where output is subject to increasing returns to scale a temporary equilibrium for this economy depends on the endowments of physical and human capital as well as on the output elasticity of returns to scale and the price elasticity of education the dynamic evolution of this economy is explored in terms of the accumulation of the two types of capital a rise in education subsidy increases the demand for education at the cost of investment in physical capital and could lead to inefficient substitution between skilled and unskilled workers in the long run copyright 1994 by the london school of economics and political science

capital utilization and factor specificity in this study a model of firm behavior that allows the level of capital utilization to be optimally chosen by cost minimizing firms is embedded into the standard specific factors model employed in the international trade literature the resulting generalization of the specific factors model provides several new insights for instance allowing for variable utilization in either or both sectors gives rise to a greater variety of possible trade patterns than forcing utilization to remain constant similarly international differences in the willingness to work during abnormal hours generate a wider variety of trade patterns than are possible in the standard specific factors model finally this model allows a reconciliation of the dual scarcity explanation of the nineteenth century anglo american pattern of trade with the historical evidence on levels of utilization

collateral motivated financial innovation collateral frictions have a profound effect on our economic landscape ranging from the design of financial securities laws and institutions to various rules and regulations we analyze a model with disagreement where securities and collateral requirements are endogenous it shows that the security that isolates the variable with disagreement is optimal in the sense that alternative securities cannot generate any trading in an economy with n states investors may introduce more than n securities and markets are still incomplete the model has several novel predictions on the behavior of basis the spread between the prices of an asset and its replicating portfolio

complementarity in a simple general equilibrium production model a simple three factor two good general equilibrium model allowing complementarity in production is examined conclusions of general equilibrium economics with two factors must be reinterpreted and qualified when complementarity is possible sign patterns of how changing factor endowments affect outputs and how changing prices affect factor payments are uncovered for a small open economy results should prove valuable to a wide range of economists interested in extending general equilibrium analysis to include complementary factors of production

interconnected communications networks and home market effects abstract this study develops a model of trade that highlights the effects of the interconnection of country specific communications networks as a driving force behind trade in high tech products with positive transport costs by constructing a two country model of monopolistic competition with two production factors it is shown that the locational decisions of firms may magnify the influence of interconnected networks in a reversal of the standard home market effects the abundance of unskilled labour in the developing countries can attract high tech firms from the developed countries jel classification d43 f12 l13