prices and investment with collateral and default abstract this paper uses the framework of an olg economy with three period lived agents in which a durable good serves as collateral for loans to study the effect of an unanticipated income shock when the economy is in a steady state equilibrium we focus on the consequence of default on loans when the value of the collateral falls below the value of the debt it secures we analyze the impulse response functions of the price and production of the durable good and show that there is an asymmetry between the response of the price and investment of the durable good to a positive and a negative income shock arising from default on the collateralized loans we show that this asymmetry can be seen in the data on housing prices and construction and is attributable to the default on mortgages in periods of decreasing prices which acts as a turbo mechanism magnifying the decline in investment

grain transport and rural credit in mozambique solving the space time problem this paper shows how credit market failures can lead to large welfare losses in grain markets by inducing increased transport for seasonal storage in locations with low credit costs the burden of these welfare losses falls primarily on rural households these conclusions are obtained from a spatial temporal model solved using a mixed complementarity formulation that easily handles interest rate differentials across space efforts to address credit market failures and to improve the efficiency of rural storage should be given priority as opposed to the creation of large formal sector grain collection centers

balance of payments the harrod foreign trade multiplier and economic growth the european and north american experience 1970 85 1988 balance of payments the harrod foreign trade multiplier and economic growth the european and north american experience 1970 85 applied economics vol 20 no 12 pp 1635 1642

technology structural change and bop constrained growth a structuralist toolbox the latin american structuralism las is a significant part of the heterodox tradition in the theory of long run growth with a focus on the problems of developing economies which started their industrialization process when other regions had already accumulated substantial technological capabilities the emergence of a centre periphery system posed specific problems to growth and distribution in laggard economies which las discusses in a systematic way in this paper we presented a simple model which firstly captures key insights of the las school such as the persistency of technological asymmetries and structural heterogeneity secondly it can be used to analyze the impacts of shocks and policies based on how they affect supply side and demand side parameters of the model thirdly it links more closely post keynesian macroeconomics based on the bop constraint with the evolutionary microeconomics concerned with the dynamics of learning lastly it can be used as a toolbox and a teachable model in the analysis of the interactions between structural change technological catching up and long run growth

the harrod foreign trade multiplier and economic growth in asian countries the validity of the harrod foreign trade multiplier for 11 asian countries is tested the results obtained generally support thrilwall s specification of the multiplier this suggests in an open economy relevant economic management is the factor that manipulates the income elasticities of exports and imports

global growth and international cooperation a structuralist perspective this paper revisits the structuralist ideas on trade and growth and suggests based on the prebisch s principle of implicit reciprocity that policies for promoting structural change in the periphery may lead to higher global growth and a better income distribution across countries the paper discusses the inter relations and complementarities that exist between autonomous expenditure and industrial and technology policies in the long run with this objective we develop a structuralist growth model in which the technology gap and the growth rate of the domestic autonomous expenditure are endogenously determined in a two country centre and periphery international economy copyright the author 2010 published by oxford university press on behalf of the cambridge political economy society all rights reserved oxford university press

structural change and the bop constraint why did latin america fail to converge this paper discusses why latin america failed to achieve sustainable convergence with the developed world since 1960 and analyses different phases of convergence and divergence using a structuralist keynesian approach first it is argued that there are critical differences between latin america the developed economies and the asian economies as regards the evolution of the income elasticity of the demand for imports the rate of growth of exports and the balance of payments constrained rate of growth the income elasticity of the demand for imports in latin america showed an upward trend particularly after the mid 1970s which was not matched by a similar increase in exports a pattern in sharp contrast with that of the east asian countries the evolution of and exports are used to set forth a typology of latin american economic growth since 1960 in addition the paper relates elasticities and the less favourable latin american performance to the intensity and direction of structural change using a broad sample of developed and developing economies it is shown that the developing countries that succeed in reducing the income gap are those that transformed their economic structures in favour of sectors with higher schumpeterian and keynesian efficiency copyright the author 2009 published by oxford university press on behalf of the cambridge political economy society all rights reserved oxford university press

generic advertising in an asymmetric cournot oligopoly we examine how benefits of mandated generic advertising vary with firm size in an asymmetric cournot oligopoly market generic advertising funded through a mandatory assessment changes demand but also increases firms costs the effect on a firm s profits depends upon the nature of the change in demand and the company s market share situations are identified in which generic advertising 1 disproportionately favors large small firms 2 decreases profits and 3 increases decreases social welfare our findings explain the concerns that are often raised on small firms being disadvantaged by generic advertising we discuss implications for policy and for firms advertising strategies copyright 2010 oxford university press

north american tomato market a spatial equilibrium perspective this paper studies the north american tomato market in a world market perspective for this purpose a spatial equilibrium model with endogenous prices is constructed and solved by quadratic mathematical programming method six scenarios involving the impacts from transportation costs tariffs and north american free trade agreement nafta were modelled the solutions illustrate their impacts on production consumption trade flows prices and net social welfare due to nafta mexico became the main tomato exporter to the usa

explaining growth rate differences in highly indebted countries an extension to thirlwall and hussain in recent years growth rate differences have increased and have elicited numerous explanations among the most controversial interpretations is that postulated by thirlwall 1979 and later extended by thirlwall and hussain 1982 both papers arguing that growth rate differences are best explained by demand constraints found in the balance of payments although the inclusion of capital flows by thirlwall and hussain 1982 is widely viewed as an improvement in the original model still we believe the model to be less than complete because it omitted the effect of debt servicing extending the model to include the effect of debt servicing this paper improves the predictability of the original model as it brought the actual growth rates closer to the predicted growth rates for most of the countries used in the previous research

correctly analysing the balance of payments constraint on growth the balance of payments constrained growth bpcg model provides an interesting hypothesis regarding economic growth the main implication is that world demand places the dominant constraint to which individual country growth adjusts i discuss this implication and argue that tests of the bpcg model have essentially been tests of the hypothesis that trade is balanced over the long run a plausible hypothesis but one that need not hold mainly through responses to world demand as transmitted via income elasticities i then discuss the role of relative prices and investment point out logical inadequacies in the traditional bpcg framework and suggest an alternative theoretical framework to investigate its robustness our theoretical and empirical explorations suggest that traditional tests of the bpcg model may be misleading including investment as a proxy for the capacity to export and addressing endogeneity issues for example noticeably weakens the influence of world demand the evidence presented contributes to reconciling evidence supporting the bpcg hypothesis with recent work that consistently finds an important role for the level of the real exchange rate and investment independently of world demand

a developing country view of the current global crisis what should not be forgotten and what should be done macroeconomic theory will surely be affected by the current global crisis there are signs that some old theories and insights will have a comeback this paper argues that among them economists should not forget the lessons that have been learnt from three decades of several financial crises in developing countries we emphasise two important lessons first preventing crises in developing countries requires not only the regulation of domestic financial systems but also a consistent set of macroeconomic policies in particular we stress the need for consistency between the exchange rate rule the capital account regime and the domestic financial market regulations second financial crises in developing countries tend to worsen both the balance of payments and the fiscal balance traditional adjustment policies tend to exacerbate the recessive trends in output and employment this is just the opposite of what is required and what governments in developed countries are able to do developing countries should push for an agenda that helps them deal with these problems

long run price elasticities and the marshall lerner condition revisited abstract in estimating trade elasticities most previous researchers employed nonstationary data and ols or 2sls method with new developments in the literature this paper uses stationary data and johansen s cointegration analysis to provide new trade elasticities for almost 30 countries

real exchange rate technological catching up and spillovers in a balance of payments constrained growth model abstract the main objective of this work is to investigate the theoretical interrelationships between economic growth the national innovation system nis and the real exchange rate rer in an export led growth model formally this work presents new changes in the kaldor dixon thirlwal s model by the introduction of the rer the nis and a function that captures the endogeneity of productivity in the industrial sector in the short term the equilibrium growth rate depends on the real exchange rate level and of the nis development which responds to the size of the technological gap the public and private investments in r d in relation to the output growth rate ratio and the absorption capacity for technological spillovers in the long run assuming the constancy of all exogenous variables the convergence of the growth process depends on the output growth elasticity in relation to exports the price elasticity of exports and the elasticity of productivity growth relative to output growth of the economy in general and to industry in particular

structural change the real exchange rate and the balance of payments in mexico 1960 2012 this paper estimates a structural model of the balance of payments with disaggregated exports manufactures and other and imports final and intermediate and a reduced form model of the trade balance for the mexican economy the analysis identifies structural changes in the composition of mexico s trade and the parameters that affect it across five subperiods marked by statistical breakpoints the results indicate that a tightening of the balance of payments constraint may account for the post liberalization slowdown in mexico s growth only during certain subperiods and that the impact of real exchange rate changes on the trade balance has diminished most likely as a result of the increasing integration of export industries into global supply chains the results also suggest an asymmetry whereby a country cannot sustain growth above the rate consistent with balance of payments equilibrium as expected but it can grow persistently below that rate when other constraints are more binding

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

balance of payments constrained growth a rejoinder to professor thirlwall professor thirlwall has argued that the growth rate of a country is constrained by the requirement that the external current account must broadly balance he maintains that a country s growth can be analysed using a dynamic harrod trade multiplier and that a country s long run growth rate y will approximate to the ratio of the rate of growth of exports x to the income elasticity of demand for imports a in a recent article in this journal mcgregor and swales 1985 doubts were expressed about the theoretical and empirical grounds on which thirlwall makes these claims in his reply thirlwall argues that such doubts are unfounded he clarifies his theory on a number of points he argues that his theory was subjected to inappropriate empirical tests and whilst accepting that equation 1 can be derived from a strict neoclassical model he invites the reader to choose between the plausibility of the neoclassical story as against the keynesian alternative

heterodox theories of economic growth and income distribution a partial survey heterodox theories of economic growth and income distribution are surveyed focusing on major theories and recent contributions first a general framework for examining growth and distribution is discussed in terms of which classical marxian and post keynesian kaleckian and other theories are presented since this framework examines how variables are determined in equilibrium second dynamics behind equilibria are examined focusing on goods market and labor market changes third the framework is extended in a variety of ways to examine additional models addressing productivity growth and technical change money and inflation finance and debt additional distributional considerations multisector issues open economy questions and the environment it is concluded that the literature on heterodox theories of growth and distribution is vibrant large and growing and addresses many issues that are ignored or neglected in orthodox theories including power unemployment and aggregate demand

real exchange rate and elasticity of labour supply in a balance of payments constrained macrodynamics a macrodynamic model is proposed in which the real exchange rate and the elasticity of labour supply interact defining different trajectories of growth and income distribution in a developing economy growth depends on imports of capital goods which are paid with exports there are no capital flows and hence is constrained by equilibrium in current account the role of the elasticity of labour supply is to prevent the real exchange rate from appreciating as the economy grows thereby sustaining international competitiveness the model allows for endogenous technological change and considers the impact of migration from the subsistence to the modern sector on the cumulative kaldor verdoorn process of learning copyright the author 2009 published by oxford university press on behalf of the cambridge political economy society all rights reserved oxford university press

collateral requirements and asset prices many assets derive their value not only from future cash flows but also from their ability to serve as collateral in this article we investigate this collateral premium and its impact on asset returns in an infinite horizon general equilibrium model with heterogeneous agents we document that borrowing against collateral substantially increases the return volatility of long lived assets moreover otherwise identical assets with different degrees of collateralizability exhibit substantially different return dynamics because their prices contain a sizable collateral premium that varies over time this premium can be positive even for assets that never pay dividends

on the size distribution of macroeconomic disasters confidence interval of 2 to 4 the results are robust to uncertainty about the values of the disaster probability and the equity premium and can accommodate seemingly paradoxical situations in which the equity premium may appear to be infinite

productivity bias hypothesis and the purchasing power parity a review article abstract productivity differentials among countries are said to be one of the major sources that contribute to the deviation of the purchasing power parity based exchange rate from the equilibrium rate hence the productivity bias hypothesis prior to last review article on the productivity bias hypothesis in 1976 almost all studies relied upon cross sectional regression analysis since then two groups of empirical studies have emerged while one group has employed time series data the other one has used panel data these two later groups have provided more support to the hypothesis than the earlier cross sectional studies this paper reviews and criticizes each group separately and provides tables that summarize main features of each study

economic growth and balance of payments constraint in brazil an analysis of the 1995 2013 period abstract the purpose of this work is to analyze the balance of payments constrained growth in brazil considering thirwall s law 1979 to this end we estimate export and import demand functions using two econometric models vector error correction and structural state space model for the period of 1995 2013 our results suggest that the balance of payments is a constraint to the brazilian economic growth given i the ratio between exports and imports income elasticities ii the low sensitivity of exports to changes in the real exchange rate and iii the evidence that exports are more sensitive to alterations in commodities prices than to changes in the real exchange rate

exploring the robustness of the balance of payments constrained growth idea in a multiple good framework this paper derives the balance of payments constrained growth bpcg model as a special case of a three good framework that incorporates exportables importables and non tradables the conditions under which the canonical form of the bpcg rate can be derived are made explicit and the assumptions scrutinized it is shown that the presence of nontradables substitutability between exportables and importables and incomplete specialization in expenditure generally dampen the externallyconstrained growth rate these ndings help explain why empirical estimates tend to overestimate the bpcg rate overall our ndings underscore the observation that tests of the bpcg hypothesis are as much a test of the internal structure of the economy under consideration

sub saharan africa s growth south south trade and the generalised balance of payments constraint using the post keynesian balance of payments constrained growth approach we investigate the recent increase in sub saharan africa ssa growth focussing on the contribution of south south trade the model is estimated by panel co integration on a sample of 20 low and lower middle income ssa countries using annual data from 1990 to 2008 and considering three partner areas ssa itself developing asia and the rest of the world the results show that in the past decade the balance of payments constraint of ssa has been relaxed this shift has occurred through different channels of transmission the other ssa countries contributed through the real growth effect developing asia through the market share effect and the rest of the world through the terms of trade effect these results help reconcile puzzling evidence on the pattern of ssa external indebtedness and provide new insights on the role of asian drivers on ssa growth as well as on the sustainability of ssa growth recovery

thirlwall law and balance of payments constrained growth further comment on the debate this paper reviews the debate that has occurred in applied economics over thirlwall s law mccombie 1989 mcgregor and swales 1985 1986 thirlwall 1986 the empired evidence concering the validity of the law is re assessed using a variety of tests including that suggested by mccombie 1989 and the new data set provided by bairam 1988 the law is overwhelmingly rejected by the evidence contrary to the conclusions of mccombie and bairam the rationale for the assumption of constant relative prices which is required to derive thirlwall s law is reconsidered the original law of one price rationale renders the approach incoherent the more recent rationale of sticky oligopolistic price improves the internal consistency of the model but necessitates consideration of non price competition however neither the theory underlying thirlwall s law nor empirical tests of the law property account for this in principle the law cannot be employed to distinguish between demanding constrained and supply co

dynamic equilibrium with two stocks heterogeneous investors and portfolio constraints we study dynamic equilibrium in a lucas economy with two stocks two heterogeneous constant relative risk aversion investors and portfolio constraints we focus on margin and leverage constraints which restrict access to credit we find a positive relationship between the amount of leverage in the economy and magnitudes of stock return correlations and volatilities tighter constraints generate rich patterns in correlations and volatilities make them less countercyclical increase risk premia proportionally to assets margins and increase prices of low margin assets more than prices of high margin assets we derive closed form solutions for the unconstrained case and the case of leverage constraints

a spatial equilibrium model for imperfectly competitive milk markets a generalization of takayama and judge s spatial equilibrium model that allows for any degree of market structure is presented the model is applied to the japanese dairy industry to examine interregional milk movements generated under alternative assumed degrees of market competition the results indicate that the perfect competition and monopoly equilibrium solutions result in a lower and a higher price respectively than actual price levels on the other hand the cournot nash equilibrium solutions are the most similar to actual observations and the actual interregional milk movements are best explained by imperfectly competitive behavior

differences in income elasticities and trends in real exchange rates abstract one might expect that differences in income elasticities in trade and or differences in growth rates among countries would give rise to strong secular trends in real exchange rates for example fast growing countries might need steady depreciation to get the world to accept their growing exports in fact however income elasticities are systematically related to growth rates by the 45 degree rule under which fast growing countries appear to face high income elasticities of demand for their exports while having low income elasticities of import demand the net effect of this relationship between elasticities and growth rates is that secular trends in real exchange rates are much smaller than one might otherwise have expected relative ppp holds fairly well this paper documents the existence of a 45 degree rule and suggests an explanation in terms of increasing returns and product differentiation

a technology gap interpretation of growth paths in asia and latin america abstract this paper presents a north south technology gap model which combines the schumpeterian approach to technical and structural change with the keynesian perspective on effective demand and the balance of payments bop constraint as drivers of growth three are the contributions of the paper first it develops a model in which the technology gap relative productivity and relative wages co evolve and may generate different paths of convergence or divergence between south and north depending on the parameters of the model second the parameters of the model are associated with different types of policies which allows for discussing how these policies may change the growth path finally the model is used to discuss the contrasting experiences of asia and latin america since 1970 convergence in asia and divergence in latin america have been extensively debated topics in the literature on comparative economic development which highlights the crucial role of industrial policy it is argued that the results of the technology gap model are consistent with the findings of this literature and helps understand the forces behind convergence and divergence

rare disasters asset prices and welfare costs a representative consumer model with epstein zin weil preferences and i i d shocks including rare disasters accords with observed equity premia and risk free rates if the coefficient of relative risk aversion equals 3 4 if the intertemporal elasticity of substitution exceeds one an increase in uncertainty lowers the price dividend ratio for equity and a rise in the expected growth rate raises this ratio calibrations indicate that society would willingly reduce gdp by around 20 percent each year to eliminate rare disasters the welfare cost from usual economic fluctuations is much smaller though still important corresponding to lowering gdp by about 1 5 percent each year

margin requirements volatility and the transitory component of stock prices official margin requirements in the u s stock market were established in october 1934 to limit the amount of credit available for the purpose of buying stocks since then higher or rising margin requirements are associated with lower stock price volatility lower excess volatility and smaller deviations of stock prices from their fundamental values the results hold throughout the post 1934 period and are not very sensitive to the exclusion of the turbulent depression years from the sample thus margin requirements seem to be an effective policy tool in curbing destabilizing speculation jel 313 520 federal regulation of securities margins was mandated by congress in the securities exchange act of 1934 the stock market experience of the late 1920s led congress to the conclusion that credit financed speculation in the stock market might create excessive market volatility through a pyramidingdepyramiding process congress reasoned that the imposition of margin requirements could constrain the amount of borrowing and prevent excessive market volatility and subsequently gave the federal reserve jurisdiction over the level of margin requirements since 1934 the federal reserve

intermediary asset pricing abstract we model the dynamics of risk premia during crises in asset markets where the marginal investor is a financial intermediary intermediaries face an equity capital constraint risk premia r

collateral constraints and asset prices abstract we study the effects of collateral constraints in an economy populated by investors with nonpledgeable labor incomes and heterogeneous preferences and beliefs we show that these constraints inflate stock prices and generate spikes and crashes in price dividend ratios and volatilities clustering of volatilities and leverage cycles they also lead to substantial decreases in interest rates and increases in sharpe ratios when investors are anxious about hitting constraints due to production crises in the economy furthermore stock prices have large collateral premiums over nonpledgeable incomes we derive asset prices and stationary distributions of the investors consumption shares in closed form

macroeconomic constraints to growth of the brazilian economy diagnosis and some policy proposals the recent accelerated expansion of the brazilian economy from 2004 to 2007 was driven by exports and gross fixed capital formation although this pace of growth is more robust than it was in the 1990s we can still witness the presence of macroeconomic constraints to its continuation in the long term such as the exchange rate overvaluation particularly since 2005 and in general the modus operandi of monetary policy such constraints may jeopardise the sustainability of the current pace of growth we argue that brazil still lies in a trap made up of high interest and low exchange rates the elimination of the exchange rate misalignment would bring about a large increase in the rate of interest which in turn would impact negatively upon investment and hence upon long term growth we indicate a set of policy measures to eliminate such a trap in particular the adoption of an implicit exchange rate target capital controls and the substitution of the present regime of inflation targeting with a double mandate regime where monetary authorities must pursue two objectives i e output stabilisation and inflation control recent events seem to go in this direction

towards determining nigeria s economic growth path a balance of payments constrained growth approach abstract this paper examines nigeria s long run growth path using the externally and internally constrained version of thirlwall s growth model from 1982 to 2015 the present study modifies the sca bopcg to take into account the effects the foreign contents in exports growth and the domestic investment three stage least squares method is used to obtain the required elasticities for the estimation of the domestic income growth the study affirms the robustness and validity of the modified model in determining the growth path for nigeria the outcome of the empirical study reveals that nigeria s economic growth process is balance of payment constrained even though monetary policies improve growth performance nigeria sustainably grows faster with policies aiming at improving external balance or reducing the import components of demands increasing export share to products with high elasticity of demand as well as keeping budget deficits within the universally acceptable limits

sustainability in a post keynesian growth model for an open economy the paper expands the bop constraint growth model and kaldorian regimes productivity and demand regimes in order to include some of the concerns raised by ecological economics in post keynesian models for open economies the demand regime is modified by taking into account porter s hypothesis which suggests that environmental innovations spurred by environmental policies can foster competitiveness as a result the equilibrium bop constrained rate of growth increases leading to a different version of thirlwall s law which opens room for analyzing the impact of environmental innovations on convergence between developing and developed economies the productivity regime in turn considers the growth and employment implications of innovations in labor productivity standard innovations and environmental efficiency environmental innovations it is argued that the fiscal policy and composition of public expenditure matter for long run growth employment and sustainability

margin based asset pricing and deviations from the law of one price in a model with heterogeneous risk aversion agents facing margin constraints we show how securities required returns increase in both their betas and their margin requirements negative shocks to fundamentals make margin constraints bind lowering risk free rates and raising sharpe ratios of risky securities especially for high margin securities such a funding liquidity crisis gives rise to bases that is price gaps between securities with identical cash flows but different margins in the time series bases depend on the shadow cost of capital which can be captured through the interest rate spread between collateralized and uncollateralized loans and in the cross section they depend on relative margins we test the model empirically using the credit default swap bond bases and other deviations from the law of one price and use it to evaluate central banks lending facilities jel g01 g12 g13 e44 e50 the paramount role of funding constraints becomes particularly salient during liquidity crises with the one that started in 2007 being an excellent case in point banks unable to fund their operations closed down and the funding problems spread to other investors such as hedge funds that relied on bank funding therefore traditional liquidity providers became forced sellers interest rate spreads increased dramatically treasury rates dropped sharply and central banks stretched their balance sheets to facilitate funding these funding problems had significant asset pricing effects the most extreme example being the failure of the law of one price loop securities with nearly

history versus equilibrium and the theory of economic growth a model of cumulative causation is developed and the limits of this model as a characterization of historical rather than equilibrium long run growth outcomes are discussed an extension of the model which postulates that cumulative causation occurs in the context of technological and institutional regimes is proposed outcomes in the extended model are shown to be more influenced by history than those in the original model the extended model also addresses a number of recent criticisms of cumulative causation copyright 1997 by oxford university press

how much would you pay to resolve long run risk abstract though risk aversion and the elasticity of intertemporal substitution have been the subjects of careful scrutiny the long run risks literature as well as the broader literature using recursive utility to address asset pricing puzzles has ignored the full implications of their parameter specifications recursive utility implies that the temporal resolution of risk matters and a quantitative assessment thereof should be part of the calibration process this paper gives a sense of the magnitudes of implied timing premia its objective is to inject temporal resolution of risk into the discussion of the quantitative properties of long run risks and related models jel d81 g11 g12

the procompetitive effect of demand enhancing check off programs this article explores demand enhancing check off programs and how such programs may influence both private programs as well as industry market structure under duopoly a firm may increase its sales through privately funding product quality improvements however such endogenous sunk costs may also be used to exclude a rival industry funded check off programs affect firms strategies and can be procompetitive the rationale lies not only in how the check off enhancement is perceived by consumers but also in the way the check off s crowding out effect reduces the ability of a firm to use its private expenditures to bar a rival s market access

a structural economic dynamics approach to balance of payments constrained growth this paper derives a balance of payments equilibrium growth rate analogous to thirlwall s law from a pasinettian multi sector macrodynamic framework the resulting formula which we call the multi sectoral thirlwall s law asserts that a country s growth rate of per capita income is directly proportional to the growth rate of its exports with such a proportionality being inversely directly related to sectoral income elasticities of demand for imports exports these income elasticities are weighted by coefficients that measure the share of each sector in total imports and exports respectively it is shown that several theoretical empirical and policy implications can be drawn from such a structural economic dynamics approach to balance of payments constrained growth

evolving dairy markets in asia recent findings and implications abstract this paper is an overview of important findings regarding the ongoing evolution of asian dairy markets based on a series of new economic investigations these investigations provide systematic empirical foundations to assess asian dairy markets with their new consumption patterns changing industries and trade prospects under different domestic and trade policy regimes with four case studies china india japan and korea a prospective analysis of future regional patterns of consumption and a policy analysis of trade liberalization of asian dairy markets the overview distills the findings of these new investigations and integrates them in the earlier economic literature it draws policy implications and identifies lessons for countries outside of asia especially for emerging exporters in latin america

growth theory and economic structure new growth theory endogenises growth but neglects aggregate demand and distributional shifts in output and employment a model incorporating demand and structural change is introduced to assess the effects of greater integration of the ec the analysis shows that i the new growth model overstates the long run implications of integration and ii identical effects on productivity growth can be achieved by reducing unemployment it is argued that the benefits of lower unemployment are more certain of achievement than those expected from reduced barriers to trade and resource movement and that stronger demand is a pre requisite for realization of the latter with the rise of the new growth theory romer 1986 many economists foresee the end of the long dominance of neoclassical growth theory new growth theorists make the general point that within their framework the rates of growth of productivity and per capita income and changes in these growth rates are endogenously explained their main criticism of neoclassical growth theory is that it attributes these growth rates to exogenous determinants and that this is not an explanation new growth theory is to be commended for its efforts to endogenize growth but it none the less retains two shortcomings in common with neoclassical growth theory it neglects the effects of 1 distributional shifts in output and employment and 2 aggregate demand in this paper we argue that these must be included in order to develop a research strategy that permits reasonable measures of the impact of policy on growth rates to support this view we first outline the way in which neoclassical and new growth theory analyse and quantify the effects of increased competition and market size using in illustration the 1992 programme for greater economic integration of the ec we then introduce a model that is free of the defects of both approaches and use it to provide a clearer view of the static and dynamic effects of the 1992 changes these are then compared with the effect of policies to reduce unemployment the results show that 1 the new growth model overstates the long run implications of the 1992 measures and 2 identical effects on productivity growth can be achieved by a programme to reduce unemployment we conclude by arguing that the benefits of lower unemploy ment are more certain of achievement that those expected to flow from reduced barriers to trade and resource movement and that stronger demand is a pre requisite if the latter are to be realized we do not attempt to make quantitative estimates of the economic gains from 1992 or from reduced unemployment whether for the short medium or long run rather our paper can be seen as outlining a research strategy for

competitiveness and industrial policy from rationalities of failure towards the ability to evolve this article elaborates a dynamic rationale of industrial policy focusing on how to strengthen the socio economic system s ability to evolve i e how to achieve high real income together with qualitative change it highlights that the ubiquitous rationalities of failure be it of markets governments or systems are rooted in a peculiar habit of accepting hypothetical perfect states as normative benchmarks in contrast a dynamic logic of intervention should start from the question what the system aims to accomplish combining the structuralist ontology of micro meso and macro with the functional principles of evolutionary change the paper proposes a general typology of economic policies based on their respective contributions to the system s ability to evolve

fixed versus flexible exchange rates which provides more fiscal discipline abstract conventional wisdom holds that fixed rates provide more fiscal discipline than do flexible rates in this paper we show that this wisdom need not hold in a standard model in which fiscal policy is endogenously determined by a maximizing fiscal authority the claim that fixed rates induce more discipline stresses that sustained adoption of lax fiscal policies must eventually lead to an exhaustion of reserves and thus to a politically costly collapse of the peg hence under fixed rates bad behavior today leads to punishment tomorrow under flexible rates bad behavior has costs as well the difference is in the intertemporal distribution of these costs flexible rates allow the effects of unsound fiscal policies to manifest themselves immediately through movements in the exchange rate hence bad behavior today leads to punishment today if fiscal authorities are impatient flexible rates by forcing the costs to be paid up front provide more fiscal discipline and higher welfare for the representative private agent the recent experience of sub saharan countries supplies evidence that matches the predictions of the model

a walrasian theory of markets with adverse selection the paper describes a walrasian theory of markets with adverse selection and shows how refinements of equilibrium can be used to characterize uniquely the equilibrium outcome equilibrium exists under standard conditions it is shown that under certain conditions a stable set exists and is contained in a connected set of equilibria for generic models there exists a stable outcome that is all the equilibria in the stable set have the same outcome these ideas are applied to markets with one sided and two sided uncertainty under standard monotonicity conditions it is shown that the stable outcome is separating and implies a particular pattern of matches of buyers and sellers

animal spirits margin requirements and stock price volatility a simple overlapping generations model is used to characterize the effects of initial margin requirements on the volatility of risky asset prices investors are assumed to exhibit heterogeneous preferences for risk bearing the distribution of which evolves stochastically across generations this framework is used to show that imposing a binding initial margin requirement may either increase or decrease stock price volatility depending upon the microeconomic structure behind fluctuations in economy wide average risk bearing propensity the ambiguous effect on volatility similarly arises when the source of heterogeneity is noise trader beliefs beyond their prudential functions the effects of initial margin requirements on securities markets are not well understood many have argued based upon empirical findings that the level of margin requirements has no discernable impact on stock price behavior nevertheless the view that high margin requirements dampen speculative excesses and reduce excess price volatility remains popular the simultaneous existence of such views highlights the uncertainty surrounding this issue in fact there exists no rigorously articulated theory of the interaction between initial margin requirements and stock prices and their returns characteristics in this paper we construct a simple dynamic model useful for characterizing the effects of initial margin requirements on security prices and returns to analyze the impact of margins we introduce investor heterogeneity into an otherwise simplified overlapping generations olg economy 2 the olg models are constructed so that each generation displays heterogeneous preferences or beliefs the distribution of which evolves stochastically across generations in each of two heterogeneous taste models we consider there are two types of agents one of which is more risk tolerant than the other in one model the

stationary equilibria in asset pricing models with incomplete markets and collateral we consider an infinite horizon exchange economy with incomplete markets and collateral constraints as in the two period model of geanakoplos and zame 2002 households can default on their liabilities at any time and financial securities are only traded if the promises associated with these securities are backed by collateral we examine an economy with a single perishable consumption good where the only collateral available consists of productive assets in this model competitive equilibria always exist and we show that under the assumption that all exogenous variables follow a markov chain there also exist stationary equilibria these equilibria can be characterized by a mapping from the exogenous shock and the current distribution of financial wealth to prices and portfolio choices we develop an algorithm to approximate this mapping numerically and discuss ways to implement the algorithm in practice a computational example demonstrates the performance of the algorithm and shows some quantitative features of equilibria in a model with collateral and default

thirlwall s law and balance of payments constrained growth a comment on the debate 1989 thirlwall s law and balance of payments constrained growth a comment on the debate applied economics vol 21 no 5 pp 611 629

the asymmetric relation between initial margin requirements and stock market volatility across bull and bear markets higher initial margin requirements are associated with lower subsequent stock market volatility during normal and bull periods but show no relationship during bear periods higher margins are also negatively related to the conditional mean of stock returns apparently because they reduce systemic risk we conclude that a prudential rule for setting margins or other regulatory restrictions is to lower them in sharply declining markets in order to enhance liquidity and avoid a depyramiding effect in stock prices but subsequently raise them and keep them at the higher level in order to prevent a future pyramiding effect copyright 2002 oxford university press

margin regulation and volatility an infinite horizon asset pricing model with heterogeneous agents and collateral constraints can explain why adjustments in stock market margins under us regulation t had an economically insignificant impact on market volatility in the model raising the margin requirement for one asset class may barely affect its volatility if investors have access to another unregulated class of collateralizable assets through spillovers however the volatility of the other asset class may substantially decrease a very strong dampening effect on all assets return volatilities can be achieved by a countercyclical regulation of all markets

thirlwall and balance of payments constrained growth this paper outlines the theory which thirlwall uses to determine the growth of domestic income and argues that crucial elements of this theory appear to be very weak the empirical evidence presented by thirlwall to support his argument for balance of payments constrained growth is considered

estimation of time varying price elasticity in 1970 1997 japanese raw milk supply by structural time series model the price elasticity of raw milk supply in japan is estimated over time by a structural time series model in state space form and the changes in elasticity are tested by the diagnosing test of de john and penzer in 1998 the supply function is modeled with a local linear trend and a strictly exogenous autoregressive distributed lag price the seasonality in the data is adjusted by a structural time series model in the 1970 1997 period there were major dairy policy changes in japan a production adjustment related penalties and two tier pricing hokkaido is the region that mainly provides the supply of raw milk for milk products while tofuken is the region that mainly produces drinking milk the estimated price elasticity in hokkaido became stable after imposition of the production adjustment on the other hand price elasticity in tofuken became stable after the inflation of the mid 1970s price elasticity is estimated to be more inelastic as well as more likely to converge in inelasticity in hokkaido than in tofuken we discuss the relationship between changes in dairy policy and changes in price elasticity