environmental significance of development theory abstract after briefly summarizing the reason for concluding that conventional development has been a failure and analysing the central mechanisms responsible this paper outlines some of the main ways in which this approach has led to serious environmental impacts it is argued that an approach to development based on market forces and growth maximisation is one of the most significant causes of global ecological destruction appropriate and ecologically sustainable development require a shift to principles of development which focus on local economic self sufficiency independence from global economic forces and the abandonment of rich world living standards as the goal of development

a patent system for both diffusion and exclusion public policy analysis of optimal patent regimes is often framed as a tradeoff between static and dynamic efficiency in this analytical framework weak patent protection and strict antitrust policy are taken to be directed toward static concerns while protection of intellectual property through strong patent laws is taken as a reflection of broader social concerns for long run growth and technological progress this characterization has some truth but the magnitude of the conflict between static and dynamic efficiency can easily be exaggerated in this article i want to argue that weak patent protection need not be inimical to economic growth and conversely that strong patent protection need not be an enemy of diffusion appropriately structured patent law and antitrust rules can together ensure incentives for r d and also induce cooperation among firms in diffusing r d results through licensing and other means at the same time cooperation among firms at the r d stage can counterbalance weak patent protection by internalizing spillovers from ongoing r d programs and such cooperation may also produce additional spillovers from the existing knowledge

international capital flows and the boom bust cycle in spain we study the joint dynamics of foreign capital flows and real activity during the recent boom bust cycle of the spanish economy using a three country new keynesian model with credit constrained households and firms a construction sector and a government we estimate the model using 1995q1 2013q2 data for spain the rest of the euro area rea and the rest of the world we show that falling risk premia on spanish housing and non residential capital a loosening of collateral constraints for spanish households and firms as well as a fall in the interest rate spread between spain and the rea fuelled the spanish output boom and the persistent rise in foreign capital flows to spain before the global financial crisis during and after the global financial crisis falling house prices and a tightening of collateral constraints for spanish borrowers contributed to a sharp reduction in capital inflows and to the persistent slump in spanish real activity the credit crunch was especially pronounced for spanish households firm credit constraints tightened later and more gradually and contributed much less to the slump

the analysis of market definition and market power in the context of rapid innovation abstract the basis for competition in many high technology industries is fundamentally different from that in more mature and stable industries most obviously there is a much greater emphasis on performance based rather than price based competition in addition the competitive dynamic is different as well with products often highly differentiated and periodic discontinuous paradigm shifts that can completely overwhelm pre existing market positions the objective of this paper is to review and evaluate some of the traditional techniques used to define markets and measure market power in antitrust analysis most significantly the limitations of these techniques when applied in high technology contexts are revealed particularly when inherently static analytical frameworks are employed often their use results in markets that are defined too narrowly with the consequence that market power is overestimated to rectify these problems several alternative methods are suggested any method applied in a high technology context must have due regard for the dynamic nature of competition in such industries and must utilize an appropriate time horizon for analysis

can government purchases explain the recent u s net export deficits abstract this paper investigates the role of u s government purchases in explaining recent u s net export behavior i develop a two country neoclassical model that emphasizes linkages from government purchases to consumption i compare the model s implications for the movements and co movements of net exports against their data counterparts a parameterization in which government purchases and private consumption are complements and in which expectations of future government purchases are revised downward can account for much of the time path and co movements of net exports i conclude that u s government purchases play some role in explaining recent u s net export behavior

productivity shocks budget deficits and the current account abstract productivity shocks and budget deficits are considered to be two key determinants of the current account in order to assess formally the role of both factors in driving current account movements the present paper extends the standard intertemporal model of the current account to allow for non ricardian household behavior testable cross equation restrictions for the current account and investment are derived by drawing on the distinction between country specific and global innovations to productivity as well as to the government budget we test the restrictions of the model against time series data for 21 oecd countries and find evidence in support of the model

a real model of the world business cycle abstract in this paper a stochastic two country log linear infinite horizon model is used to analyze the generation and transmission of economic fluctuations across countries it is argued that following a country specific supply disturbance production interdependence and unitary elasticities in consumption and production are sufficient to generate comovements in aggregate economic activity investment and trade that are persistent over time and positively correlated across countries however the empirical analysis carried out for the usa japan germany and uk for the 1960 82 period suggests that common shocks rather than trade links are responsible for this pattern of comovements

international portfolios capital accumulation and foreign assets dynamics despite the liberalization of capital ows among oecd countries equity home bias remains sizable we depart from the two familiar explanations of equity home bias transaction costs that impede international diversi cation and terms of trade responses to supply shocks that provide risk sharing so that there is little incentive to hold diversi ed portfolios we show that the interaction of the following ingredients generates a realistic equity home bias capital accumulation shocks to the e ciency of physical investment as well as international trade in stocks and bonds in our model domestic stocks are used to hedge uctuations in local wage income terms of trade risk is hedged using bonds denominated in local goods and in foreign goods in contrast to related models the low level of international diversi cation does not depend on strongly countercyclical terms of trade the model also reproduces the cyclical dynamics of foreign asset positions and of international capital ows

us trade balance dynamics the role of fiscal policy and productivity shocks and of financial market linkages abstract this paper examines whether domestic and foreign productivity and fiscal policy changes can account for the wide swings in us net exports during the period 1975 1991 a two country real business cycle model is used for that purpose the model is simulated using data on productivity government purchases and taxes for the g7 countries a version of the model with incomplete asset markets in which only bonds can be used for international capital flows tracks the us trade balance fairly closely provided permanent country specific productivity shifts are assumed the simulations suggest that us productivity changes were the main source of fluctuations in us net exports

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

dissecting the dynamics of the us trade balance in an estimated equilibrium model in an estimated two country dsge model we find that efficiency shocks specific to investment account for more than half of the forecast variance of cyclical fluctuations in the us trade balance both domestic and foreign investment specific shocks have a substantial impact on the variability of the imbalance total factor productivity shocks do not matter for the variance and even lead to procyclicality in the trade balance

the u s national innovation system origins and prospects for change in recent years the concept of national innovation systems has attained considerable currency and interest although a precise definition of a national innovation system is difficult analyses of the japanese and u s national innovation systems have implicitly defined them as the array of public and private institutions and organizations within an economy that fund and perform rd nelson 1993 interest in national innovation systems stems in part from a growing acknowledgment of the contributions to national economic welfare of superior performance in the commercialization and adoption of new technologies this awareness in turn has been heightened by the innovative and economic strength of postwar japan

horizontal concentration and european merger policy in the second section of this policy paper the main theoretical arguments concerning the costs and benefits of horizontal mergers as a way of modifying market conditions are identified as well as the exploration of some indicators that could be used to evaluate the probability of these costs and benefits in a european context

explaining international comovements of output and asset returns the role of money and nominal rigidities abstract output and asset returns are highly positively correlated across the u s and the remaining major industrialized countries standard business cycle models that assume flexible prices and wages in the real business cycle rbc tradition have great difficulties explaining this fact this paper presents a dynamic optimizing stochastic general equilibrium model of a two country world with sticky nominal prices and wages the structure here generates cross country correlations of output and returns that are markedly higher and hence closer to the data than the cross country correlations that obtain when flexible prices and wages are assumed

the exchange rate in a dynamic optimizing business cycle model with nominal rigidities a quantitative investigation this paper studies a quantitative dynamic optimizing business cycle model of a small open economy with staggered price and wage setting the model exhibits exchange rate overshooting in response to money supply shocks the predicted variability of the nominal and especially of the real exchange rate is noticeably higher than in standard real business cycle models with flexible prices and wages a positive domestic money supply shock is predicted to lower the domestic interest rate raise gdp and trigger a depreciation of both the nominal and real exchange rate increases in domestic productivity and in the world interest rate are also predicted to induce a nominal and real exchange rate depreciation 2001 elsevier science b v all rights reserved

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

what drives the german current account and how does it affect other eu member states we estimate a three country model using 1995 2013 data for germany the rest of the euro area rea and the rest of the world row to analyse the determinants of germany s current account ca surplus after the launch of the euro our results suggest that the german surplus reflects a succession of distinct shocks mono causal explanations of the surplus are thus insufficient the most important factors driving the german surplus were positive shocks to the german saving rate and to row demand for german exports as well as german labour market reforms and other positive german aggregate supply shocks the key shocks that drove the rise in the german ca tended to worsen the rea trade balance but had a weak effect on rea real activity our analysis suggests these driving factors are likely to be slowly eroded leading to a very gradual reduction of the german ca surplus an expansion in german government consumption and investment would raise german gdp and reduce the ca surplus but the effects on the surplus would be weak

consumption real exchange rates and the structure of international asset markets abstract international real business cycle irbc models that assume complete asset markets yield strong restrictions for consumption and bilateral real exchange rate series empirical tests with data for the us japan france uk italy canada and sweden suggest that neither the trend behavior nor high frequency movements of consumption and real exchange rates are well explained by irbc models with complete markets it appears however that high frequency fluctuations of consumption and real exchange rates are consistent with unrestricted international trade in risk free bonds

understanding the dynamic effects of government spending on foreign trade abstract using vector autoregressions on u s time series the present paper documents the effects of fiscal policy on foreign trade an increase in government spending significantly depreciates the nominal exchange rate appreciates the terms of trade and increases net exports exposed to the same spending shock a new keynesian general equilibrium model is shown to match qualitatively the response of relative prices the response of net exports in contrast depends on the intra and intertemporal elasticities of substitution and the degree of home bias in private spending an accommodating monetary policy dampens but does not alter the response of net exports

twin deficit or twin divergence fiscal policy current account and real exchange rate in the u s abstract in spite of concerns about twin deficits fiscal and the current account deficits for the united states economy empirical evidence suggests that twin divergence is a more usual feature of the historical data i e when fiscal accounts worsen the current account improves and vice versa this paper empirically studies the effects of fiscal policy government budget deficit shocks on the current account and the real exchange rate during the flexible exchange rate regime period based on var vector auto regression models we identified exogenous fiscal policy shocks after controlling for business cycle effects on fiscal balances in contrast to the predictions of most theoretical models the u s results suggest that an expansionary fiscal policy shock or a government budget deficit shock improve the current account and depreciate the real exchange rate increases in private savings and declines in investment contribute to the current account improvement while a nominal exchange rate depreciation as opposed to a relative price level change is mainly responsible for the real exchange rate depreciation the twin divergence of fiscal balances and current account balances is also explained by the prevalence of output shocks i e output shocks more than fiscal shocks appear to drive the co movements of the current account and the fiscal balance

dominant firms and mergers the completion of the single european community ec market in 1992 is widely expected to result in substantial benefits which will come partly from increased allocative efficiency and partly from increased dynamic efficiency however if these benefits are to be fully realised one essential condition has to be met and that is the preservation of competitive markets economic integration has the immediate and benevolent effect of deconcentrating industries and promoting competition but there is no guarantee that this stimulus to competition will be sustained indeed past experience suggests that major upheavals in the economic environment which expose firms to more intensive competitive pressures may result in firms and governments adopting strategies designed to weaken the competitive impact these strategies include mergers and takeovers to maintain or strengthen positions of market dominance transnational cartels and government intervention to protect national champions an effective policy towards monopolies and mergers is generally regarded to be one important policy weapon for ensuring that economic integration results in the greatest possible benefit however in spite of this general agreement there is a great deal of uncertainty about what exactly should be done this paper examines some of the sources of this uncertainty and outlines the approach to monopoly and merger policy that is being adopted in the ec ii alternative approaches to monopoly and merger policy the two main systems for the control of market power are the cost benefit and structural approaches the cost benefit approach involves a case by case study of large firms to assess whether in each individual case the benefits of large size e g possible economies of scale increased foreign competitiveness outweigh or are outweighed by the costs i e increased market power thus the attitude that underlies this approach to policy is basically neutral no general stand is taken and the merits of competition versus market power are assessed in each case the structural approach is more radical and presumes that there is in general a positive link between intense competition and increases in social welfare competition and competitive market structures should thus be defended because the benefits from competition will outweigh any potential benefits from increased firm size thus the structural approach to the control of market power implies that large firms should be controlled by preserving or

twin deficits squaring theory evidence and common sense in this paper we reconsider the twin deficit hypothesis that fiscal shocks generating budget deficits also worsen external trade both from a theoretical point of view and by analyzing data for australia canada the uk and the us first we assess the joint dynamics of budget and trade deficits along the business cycle uncovering a strikingly recurrent s shaped relation between the two the correlation is actually negative suggesting twin divergence this observation however cannot rule out the possibility that government spending expansions and or tax cuts may cause trade deficits as the overall correlation is likely to be dominated by cyclical factors second we reconsider the transmission of government spending in a standard two country two good model we find that openness and the persistence of fiscal shocks are major determinants of the magnitude or even sign of the response of the trade balance to fiscal shocks for a given persistence of the fiscal shock the closer an economy the larger the crowding out effect on investment the lower the deterioration of the trade balance third we take this insight to the data investigating the transmission of fiscal shocks in a var framework in the four countries in our sample our empirical findings tend to support our view in the us and australia which are relatively less open than canada and the uk and where government spending shocks are less persistent we find that the external impact of fiscal policy is rather limited instead private investment responds substantially the reverse is true for canada and the uk these findings confirm and put into perspective earlier results whereas fiscal expansions in the us are found to have on average a negligible effect on the country s trade balance however we emphasize that these results are consistent with a call for a us fiscal retrenchment to address global imbalances the impact of budget cuts on the us external trade is muted by their positive effect on domestic investment strengthening the us ability to generate resources against future interest and debt repayment

semi parametric predictions of the intertemporal approach to the current account abstract this paper uses the method dynamic programming dp by gmm and canadian data to estimate a dynamic model of a small open economy dp by gmm has several appealing features it does not impose certainty equivalence it accommodates multiple shocks and imposes few restrictions on the properties of the shocks in the model also since it uses the actual shocks series to estimate approximate decision rules it produces sample paths for the endogenous variables in the model the model estimated fits the data well in particular the variance of the predicted trade balance output ratio matches its empirical counterpart