indeterminacy intergenerational redistribution endogenous longevity and human capital accumulation abstract this paper sets up an olg economy with endogenous life expectancy to study how fiscal policy that redistributes between generations can open the door to sunspot equilibria agents invest independently in their own human capital produce and consume output and receive a pension upon retirement the model produces an expectations coordination problem that can explain significant differences in growth paths followed by otherwise identical countries in particular we show that our economy may be characterized by local indeterminacy of dynamic equilibria and hence feature fluctuations which are driven by extrinsic uncertainty

nonmonetary effects of the financial crisis in propagation of the great depression this paper examines the effects of the financial crisis of the 1930s onthe path of aggregate output during that period our approach is complementary to that of friedman and schwartz who emphasized the monetary impact of the bank failures we focus on non monetary primarily credit related aspects of the financial sector output link and consider the problems of debtors as well as those of the banking system we argue that the financial disruptions of 1930 33 reduced the efficiency of the credit allocation process and that the resulting higher cost and reduced availability of credit acted to depress aggregate demand evidence suggests that effects of this type can help explain the unusual length and depth of the great depression this abstract was borrowed from another version of this item

asymmetric price adjustment and economic fluctuations this paper considers a possible explanation for asymmetric adjustment of nominal prices the authors present a menu cost model in which positive trend inflation causes firms relative prices to decline automatically between price adjustments in this environment shocks that raise firms desired prices trigger larger price responses than shocks that lower desired prices the authors use this model of asymmetric adjustment to address three issues in macroeconomics the effects of aggregate demand the effects of sectoral shocks and the optimal rate of inflation copyright 1994 by royal economic society

equilibrium dynamics in an endogenous growth model of money and banking we construct an analytically tractable endogenous growth model of money and banking where money provides liquidity services to facilitate transactions and banks convert non reserve deposits into productive capital we examine both the long and short run effects of changes in the money growth rate or the reserve requirement ratio in response to a change in the required reserve ratio the inflation rate and the growth rates of capital real balances and consumption need not adjust monotonically along the transition path while the balanced growth equilibrium may be either a saddle or a source locally the global dynamical system exhibits flip bifurcation

on the role of small models in macrodynamics abstract this paper focuses on the role of small models in macrodynamics it discusses the insights that i believe these models offer and the extent to which they can address some of the complex issues such as heterogeneity and interactions among agents that are receiving increasing attention in the literature i comment on what i view to be the most productive role for numerical simulations and finally offer some brief comments in defense of the state of modern macroeconomic theory in light of the criticism it has received as a result of the recent financial crisis

multiple equilibria fiscal policy and human capital accumulation this paper shows that in a three sector model of endogenous growth with physical and human capital accumulation taxation policy can generate indeterminacy under plausible parameterizations the key for this result is that the accumulation of human capital is a non market activity in which individuals combine their non working time with intermediate goods that are provided by the market this assumption is consistent with the microfoundations of human capital accumulation found by the literature on life cycle earnings

state dependent pricing and the dynamics of money and output standard macroeconomic models of price stickiness assume that each firm leaves its price unchanged for a fixed amount of time we present an alternative model in which the pricing decision depends on the state of the economy we find a method of aggregating individual price changes that allows a simple characterization of macroeconomic variables the model produces a positive money output correlation and an empirical phillips curve in addition the impact of monetary shocks depends crucially on the current level of output which points to a natural connection between state dependent microeconomics and state dependent macroeconomics i introduction there is a long tradition in macroeconomics of attributing the real effects of nominal demand shocks to nominal price stickiness in this view if there is no change in prices when nominal demand rises then quantities must bear the burden of adjustment hence nominal price rigidity provides the friction needed for nominal demand shocks to be transmitted to the real economy standard models of this transmission mechanism such as fischer 1977 and taylor 1980 are based on the assumption that each firm leaves its price unchanged for a fixed amount of time the main reason for considering such time dependent pricing rules is their analytic tractability constraining firms to adjust their prices at prespecified times both simplifies the derivation of equilibrium strategies and allows the use of powerful time series techniques to analyze aggregate dynamics the main disadvantage of the timedependent approach is that between price adjustments firms are not allowed to respond even to extreme changes of circumstance this makes it difficult to know whether the qualitative effects of money in these models are the result of nominal rigidities per se or of the exogenously imposed pattern of price changes an alternative approach to modeling price stickiness is to allow the price setting decision to depend on the actual state of the

growth income inequality and fiscal policy what are the relevant trade offs we develop an endogenous growth model with elastic labor supply in which agents differ in their initial endowments of physical capital in this context the growth rate and the distribution of income are jointly determined we then examine the distributional impact of different ways of financing an investment subsidy policies aimed at increasing the growth rate result in a more unequal distribution of pre tax income consistent with the positive correlation between income inequality and growth observed in the recent empirical literature however there is no conflict between efficiency and equity if inequality is measured in terms of the distribution of welfare

explaining output volatility the case of taxation this paper presents strong empirical evidence that the observed heterogeneity of output volatility across countries and over time is partly endogenous in particular based on a closed form solution we obtain a long run equilibrium relationship between taxes and output volatility in the stochastic neoclassical growth model by showing that asymptotically the variance of output growth rates is affected by the level of taxes without affecting the mean we estimate the tax semi elasticities on output volatility and provide convincing empirical evidence that taxes are important to understand differences in output volatility among oecd countries

a two sector model of endogenous growth with leisure externalities abstract this paper considers the impact of leisure preference and leisure externalities on growth and labor supply in a lucas 1988 12 type model as in gomez 2008 7 with a separable non homothetic utility and the assumption that physical and human capital are both necessary inputs in both the goods and the education sectors in spite of the non concavities due to the leisure externality the balanced growth path is always unique which guarantees global stability for comparative static exercises we find that small differences in preferences toward leisure or in leisure externalities can generate substantial differences in hours worked and growth which may play a significant role in explaining differences in growth paths between the us and europe in addition to the mechanisms uncovered in prescott 2004 15 relying on differing marginal tax rates on labor income our model indicates however that a higher preference for leisure or leisure externality implies less growth but also less education attainment which seems counterfactual

labor market frictions human capital accumulation and long run growth positive analysis and policy evaluation we construct a search model with endogenous human capital and labor participation to study the growth effects of short run frictions and the effectiveness of human capital policies employment learning effort and output growth increase with more effective learning better labor market matching lower job separation or less costly vacancy creation although output growth employment vacancy creation and learning and search effort are most responsive to changes in a human capital policy that directly affects learning effort such a policy need not be more beneficial for welfare the effects of human capital policies become larger as the severity of labor market frictions rises

on non existence of markov equilibria in competitive market economies abstract this paper presents some examples of regular dynamic economies with externalities and taxes that either lack existence of a markov equilibrium or such equilibrium is not continuous these examples pose further challenges for the analysis and computation of these economies journal of economic literature classification numbers c10 c62

stability global dynamics and markov equilibrium in models of endogenous economic growth abstract this paper studies the local and global dynamics of two sector models of endogenous growth with economy wide external effects and taxes on capital and labor the local analysis classifies the parameter space depending on the number of stationary solutions and local stability of equilibria the global analysis shows that if taxes are within certain bounds and the size of the external effects on the average level of human capital is smaller than the share of physical capital the equilibrium path is monotone and therefore a continuous markov equilibrium can be constructed

indeterminacy and sunspots with constant returns recently there has been a renewed interest in the possibility of indeterminacy and sunspots or alternatively put in the existence of a continuum of equilibria that arises in dynamic economies with some market imperfections much of the research in this area has been concerned with the empirical plausibility of indeterminacy in markets with external effects or with monopolistic competition and which exhibit some degree of increasing returns while the early results on indeterminacy relied on relatively large increasing returns and high markups more recently benhabib and farmer 1996a showed that indeterminacy can also occur in two sector models with small sector specific external effects and very mild increasing returns

fiscal policy in an endogenous growth model with human capital accumulation abstract in this paper we present an endogenous growth model with physical and human capital accumulation and study the effects of labor and capital income taxation on the transitional dynamics to the balanced path we show that parameters on preferences technologies and depreciation rates as well as fiscal policy parameters are relevant to determine qualitatively the dynamic behavior of the economy we also offer a measure of the inefficiency derived from the taxation of capital earnings finally we consider the taxation welfare cost in two non trivial generalizations of our basic model which include the case of physical capital in the educational sector and leisure as an additional argument in the utility function

sticky wage or sticky price analysis of the cyclical behavior of the real wage the study of business cycles has been at the heart of macroeconomic theory for decades theoretical efforts have focused on providing an adequate explanation for sources of economic fluctuations new keynesian explanations have emphasized rigidity that interferes with market forces increasing the effect of demand shocks on the output produced the form of rigidity is in sharp contrast between sticky wage and sticky price models the former imposes rigidity on the shortrun adjustment of wages to demand shocks 20 47 the latter in contrast imposes rigidity on the short run price adjustment to demand shocks 2 34 40 9 43 4 the theoretical plausibility of competing explanations of business cycles has stimulated interest to establish their empirical validity 32 28 1 8 11 23 21 26 these efforts have focused attention on cyclical fluctuations of the real wage in response to demand shocks the real wage may move procyclically or countercyclically according to the relative adjustment of wages and prices the interest in studying the cyclical behavior of the real wage relates to its implications to the real effects of aggregate demand shocks in the context of sticky wage models nominal wage rigidity reinforces the countercyclical response of the real wage to demand shocks and the real effect of these shocks on output growth sticky price models in contrast advocate that price rigidity increases the procyclical response of the real wage to demand shocks and their real effect on output growth the results of earlier investigations of the cyclical behavior of the real wage appear conflicting and therefore do not lend support to a given explanation 2 the present investigation seeks to contribute to this literature unlike previous empirical research on the subject the objective of this investigation is to study the cyclical behavior of the real wage and the relative flexibility of the nominal wage and the price level that determines this behavior in response to demand shocks using data for the united states in the preand post world war ii sample periods the cyclical

indeterminacy under constant returns to scale in multisector economies recently there has been a renewed interest in indeterminacy or alternatively put in the existence of a continuum of equilibria in dynamic economies that exhibit some market imperfections one of the primary concerns of this literature has been the empirical plausibility of indeterminacy which arises in markets with external effects or with monopolistic competition often coupled with some degree 10 of increasing returns

the significance of technical trading rule profits in the foreign exchange market a bootstrap approach abstract in this paper we present new evidence on the profitability and statistical significance of technical trading rules in the foreign exchange market we utilize a new data base currency futures contracts for the period 1976 1990 and we implement a new testing procedure based on bootstrap methodology our results suggest that simple technical trading rules have very often led to profits that are highly unusual splitting the entire sample period into three 5 year periods reveals that on average the profitability of some trading rules declined in the latest period although profits remained positive on average and significant in many cases jel f31 f47 g15

information asset prices and the volume of trade a dynamic equilibrium model is constructed in which agents with access to different information sets participate in the capital market agents must use the equilibrium price of capital to make optimal forecasts of the return to holding capital examples show that the volume of trade as well as the price of capital can be highly correlated with a measure of the information content of prices this measure of information is the difference between the unconditional entropy of the dividend and the entropy of the dividend conditional on observing the price of capital

optimal factor tax incidence in two sector human capital based models abstract this paper studies the optimal factor tax incidence in a standard two sector human capital based endogenous growth model elucidated by lucas 1988 capital income taxes generate dynamic inefficiency for capital accumulation and labor income taxes create dynamic inefficiency for human capital accumulation a factor tax incidence is a tradeoff between these two inefficiencies a switch from capital income taxes to labor income taxes reduces the long run welfare coming from lower leisure and increases the long run welfare originated from higher economic growth and higher consumption because the representative agent s learning time and human capital are inseparable and thus affect learning activities at the same degree we find that based on the current us income tax code it is optimal to first tax capital income and to resort to taxing labor income only when tax revenue is insufficient to cover government expenditure

market imperfections and the instability of open economies in the presence of small market imperfections the transitional dynamics of an open economy can become indeterminate in that there exist an infinite number of equilibrium paths converging to a unique steady state in contrast to closed economy models in the open economy such indeterminacy can arise independently of the curvature of the utility function in consumption the results suggest that with market imperfections open economies can be subject to fluctuations caused by randomness unrelated to the economy s fundamentals

the environmental kuznets curve and equilibrium indeterminacy abstract we illustrate that the existence of the environmental kuznets curve ekc could be the result of indeterminacy of equilibria in a simple neoclassical growth model with a single environmental externality in households utility function and with public abatement we characterize the condition on the parameters in preferences and in the pollution technology leading to local indeterminacy of equilibrium estimates of the crucial parameters of the model using data from economies that display the ekc satisfy the theoretical indeterminacy condition we find that the presence of abatement activities is not a necessary condition for indeterminacy equilibria and hence an ekc to arise on the other hand non separability of consumption and pollution in the utility function is crucial

multiple bgps in a growth model with habit persistence this paper establishes multiple balanced growth paths in an otherwise standard competitive growth model without externality or distortions and with households preference dependent upon how his her consumption compares to a habit stock formed by his her own past consumption the key feature in our model is that consumption forms habits in combination with existing habits this model establishes multiple equilibria because habit persistence induces an internal intertemporal complementarity effect among consumption flows with current consumption reinforcing future consumption as a result there exist two balanced growth paths with one path exhibiting low consumption and habits and high economic growth and the other path exhibiting high consumption and habits and low growth that is not necessarily a development trap both steady states are saddles but global indeterminacy arises where a high balanced growth path co exists with a low balanced growth path where the two equilibrium paths cannot be pareto ranked and history need not matter for the selection of the equilibrium path

on the taxation of human and physical capital in models of endogenous growth abstract this paper studies the effects of factor income taxation and of subsidies to human capital accumulation in models of endogenous growth it examines in particular how these effects depend on the specification of the leisure activity and on the technology and tax treatment of the sector producing human capital it shows that the negative effects of factor income taxes on economic growth are stronger when the human capital sector is a market good under these circumstances a subsidy to human capital accumulation can offset the direct growth effects of labor taxation making it akin to a consumption tax the paper then briefly discusses the normative implications of the analysis for the optimal taxation of factor incomes

asymmetric nominal flexibility and economic fluctuations recent research has produced strong evidence that supports the asymmetric effects of positive and negative money supply shocks using quarterly data for the united states the evidence of cover 10 suggests that positive money supply shocks do not have an effect on output while negative money supply shocks do the asymmetric impact of demand shocks on real output growth is not addressed in the context of mainstream business cycle theories which include the equilibrium explanation pioneered by lucas 21 and neo keynesian models emphasizing nominal wage rigidity 14 15 or price rigidity 2 in the context of lucas s paradigm agents are scattered in informationaly isolated islands across the economy an unexpected positive or negative change in aggregate demand may be misperceived by agents as being specific to their markets in the case of a positive demand shock producers and workers expand the output and labor supplied to take advantage of the perceived increased demand in their island similarly agents are expected to contract the output produced in response to a perceived reduction in the demand for their output this scenario does not provide an obvious theoretical channel through which the slope of the short run supply curve can be differentiated depending on the direction of the change in aggregate demand in the context of a contractual wage rigidity framework the nominal wage is fixed for a duration that is determined by contractual agreements according to this framework a change in aggregate demand deviates the real wage from its market clearing value for a duration that is determined by the contract length a positive demand shock will raise the price level decrease the real wage and in turn cause an expansion in labor demand and the output produced in the short run a negative demand shock in contrast raises the realized real wage which has a negative impact on labor demand and the output produced in the short run in the absence of any stipulation in contracts that differentiates the degree of wage rigidity in response to a positive and negative demand shock the slope of the short run supply curve is not likely to be differentiated based on the direction of change in aggregate demand in the context of the sticky price explanation of business cycles the price level across sectors of the economy is fixed for a specific duration a change positive or negative in aggregate demand will be absorbed in output as long as the price level remains fixed in the short run in the absence of any stipulation that differentiates the upward and downward stickiness of the price

retraining and long term unemployment in a model of unlearning by not doing this paper develops a dynamically consistent model of search matching and bargaining when worker skills decline while unemployed long term unemployment emerges as an endogenous phenomenon even with constant returns to matching multiple pareto rankable equilibria are possible policies to address long term unemployment are best directed toward prevention e g vacancy creation subsidies rather than cure e g retraining subsidies

fiscal policy and indeterminacy in models of endogenous growth this paper investigates the dynamic behavior of two sector models of endogenous growth with sector specific external effects and government expenditure financed by distortionary taxation when this type of external effect is combined with a sufficient degree of capital taxation in a lucas uzawa endogenous growth model continua of equilibria will emerge in the region of the balanced growth paths by contrast indeterminacy is not possible when either sector specific external effects or factor taxation are added to the model in isolation in the second part of the paper we demonstrate that if labor supply is endogenous indeterminacy can be consistent with much lower degrees of increasing returns to scale furthermore certain types of fiscal policy will be associated with multiple balanced growth paths and the existence of a poverty trap finally in the last part of the paper we demonstrate that if physical capital is employed in both sectors of the economy indeterminacy will emerge for varying combinations of factor taxation and external effects even when returns to scale are constant at the social level

two sector growth models with productive public goods equilibrium in determinacy author affiliation been lon chen institute of economics academia sinica 128 academia road section 2 taipei 11529 taiwan e mail bchen econ sinica edu tw corresponding author shun fa lee department of industrial economics tamkang university 151 ying chuan road tamsui taipei county 25137 taiwan e mail alphalee mail tku edu tw acknowledgment we are grateful to two anonymous referees and an editor for constructive comments and to participants in several workshops for valuable comments and suggestions in earlier versions of the paper 1 introductionmodels of economic growth with multiple equilibrium paths offer an explanation as to why we often observe diverse growth performances among countries with similar economic environments a central question is under what conditions is it possible to establish local indeterminacy in this paper we study a lucas 1988 human capital based growth model and investigate whether there are multiple equilibrium paths and thus local equilibrium indeterminacy in the neighborhood of a balanced growth path equilibrium indeterminacy in existing two sector human capital based growth models emerges based upon two mechanisms one of the mechanisms is differential factor tax rates initiated in the work of bond wang and yip 1996 and followed by that of raurich 2001 the other mechanism is sector specific externalities pioneered in the work of benhabib and farmer 1996 in an exogenous growth model and followed by the work of benhabib meng and nishimura 2000 and mino 2001 in endogenous growth models ben gad 2003 combined the two mechanisms these two mechanisms establish local indeterminacy when the mechanisms cause the factor intensities at the social perspective and those at the private perspective to reverse the purpose of this paper is twofold first we argue that once productive public goods are considered the two existing mechanisms are not robust in creating local indeterminacy then we take into account congestion in public services so a two sector model with the two existing mechanisms can generate local indeterminacy our purpose is motivated by the following in the existing models with sector specific externalities or distorted factor taxes there is either no government spending or if the government spending is taken into account only consumptive public spending and government transfers are considered recently a number of authors have documented the positive impact of public expenditure upon the productivity of private capital 1 when there is productive public spending the production technology is externally enhanced by the public goods productive public goods as an engine of economic growth have received much attention in endogenous growth models in particular a number of studies in this line of modeling strategy have obtained local indeterminacy 2 thus it is important to determine whether or not differential factor tax rates and sector specific externalities create local indeterminacy in models with productive public goods however as we will find the two existing mechanisms no longer create local indeterminacy in a two sector growth model with productive public goods unless the difference in the factor tax rates and the gap in the sector specific externalities are implausibly large intuitively productive public goods introduce the effects of intersectoral externalities they offset the effects of the two existing mechanisms that would have otherwise reversed the factor intensity at the social viewpoint from the factor intensity at the private viewpoint as a consequence the two existing mechanisms are not robust in the establishment of local indeterminacy in models with productive public goods this paper then introduces the congestion effect in the use of public goods an effect offsetting the effect from public spending to salvage the two existing mechanisms

trade and revelation of information abstract we consider an economy with asymmetric information and two types of agents fully informed and uninformed uninformed agents update their information observing equilibrium prices and the equilibrium levels of other agents excess demand we show that for a generic set of economies there are rational expectations equilibria which are partially revealing on an open dense set of signals of positive lebesgue measure provided that the dimension of the signal space is sufficiently larger than the dimension of the commodity space

market frictions technology adoption and economic growth this paper develops an endogenous growth model with labor market matching and technology adoption while labor market search and entry frictions lengthen technology diffusion exogenous technology arrival may creatively destruct jobs in the short run such interrelationships give rise to multiple equilibria global and local indeterminacy under which a small autonomous technological improvement may create a large growth effect we characterize the effects of exogenous technology arrival on equilibrium matching adoption effort wage and the overall dispersion of wages social inefficiency arises as a result of individuals failure to account for free rider thick matching job destruction effects in making technology adoption decision

population ageing and pension reform in a small open economy with non traded goods in this paper we study the implications of population ageing in an economy with a sizeable non traded goods sector to this effect a highly stylized micro founded macro model is constructed in which the age structure of the population plays a non trivial role the model distinguishes separate birth and death probabilities thus allowing for net population change allows for age dependent labour productivity thus mimicing life cycle saving and includes a rudimentary pension system thus allowing for intergenerational redistribution the model is used to analytically study demographic and pension shocks

equilibrium dynamics in two sector models of endogenous growth abstract this paper considers two extensions of the uzawa lucas framework in our first extension physical capital is included as an input of the educational sector in our second extension leisure considerations are assumed to play a positive role in agents welfare the case with physical capital in the production of education features under standard conditions a unique steady state and thus the dynamics are qualitatively similar to those of the original uzawa lucas framework in our second model with leisure there could be a multiplicity of steady states with different rates of growth what determines here the chosen rate of growth is the initial relative amount of physical and human capital our results therefore illustrate that in a world without externalities there could coexist different long term growth rates

the asymmetric effects of monetary policy a nonlinear vector autoregression approach this paper tests for nonlinearity in a standard vector autoregression including output prices and money supply using an estimation strategy that is consistent with a wide range of structural macroeconomic models shocks to the money supply are found to have stronger output effects and weaker price effects when output growth is initially low positive and negative monetary shocks are found to have nearly symmetric effects in addition there is some evidence that shocks of different magnitudes have asymmetric effects these results are consistent with the view that the aggregate supply curve is convex

equilibrium dynamics in a two sector model with taxes in this paper we are concerned with the equilibrium dynamics of a two sector model of endogenous growth with distortionary taxes we show that for certain parameters values and tax schemes every equilibrium orbit except the steady state solution is non interior i e there are times in which one of the sectors is inactive this analysis confirms that in multisector models the set of easily checkable universal conditions that can guarantee the interiority of equilibrium solutions is rather limited journal of economic literature classification numbers d90 e22

introduction to a general equilibrium approach to economic growth abstract endogenous growth theory has had some success in explaining the observed data related to the process of economic growth however the results of the models in this literature are typically very sensitive to their micro economic structure it is therefore important to understand how the growth process behaves under more general specifications of such features as the number of commodities the number and preferences of consumers the factors of production and the financial and information structures in other words valuable insights can be gained by integrating growth theory into the framework of general equilibrium theory the summary of the papers in this volume focuses on seven issues that are crucial to this integration and highlights the contributions of the papers to the resolution of these issues journal of economic literature classification numbers c61 d50 d90 f43 o30 o41

growth sectoral composition and the evolution of income levels abstract we assert that the endowments of production factors cause cross country differences in gdp by generating disparities in the sectoral composition we characterize the dynamic equilibrium of a two sector endogenous growth model with several consumption goods that are subject to minimum consumption requirements in this model economies with the same fundamentals but different endowments of capitals will end up growing at a common rate although the long run sectoral composition of gdp will be different because the total factor productivity tfp in multisector models depends on sectoral structure these differences in capital endowments will also generate sustained differences in tfps

dynamic s s economies in this paper the authors provide a framework to study the aggregate dynamic behavior of an economy where individual units follow s s policies and are subject to aggregate and idiosyncratic shocks they characterize structural and stochastic heterogeneities that ensure convergence of the economy s aggregate to that of its stochastic frictionless counterpart determine the speed at which convergence takes place and describe the transitional dynamics of this economy they study the evolution of the economy s aggregate and the evolution of the difference between this aggregate and that of the difference between this aggregate and that of an economy without microeconomic friction where the latter pertains to a situation where individual units adjust with no delay to all shocks copyright 1991 by the econometric society

the asymmetric effects of demand shocks international evidence on determinants and implications the analysis focuses on the asymmetric effects of demand shocks the evidence across a sample of 19 industrial countries differentiates the effects of expansionary and contractionary aggregate demand shocks on real output growth and nominal wage and price inflation the difference appears consistent with a kinked supply curve that is dependent on the asymmetric flexibility of wages and or prices across countries furthermore the evidence does not support the endogeneity of asymmetric nominal flexibility with respect to demand variability or trend price inflation across countries on average across countries demand variability increases nominal wage and price inflation relative to deflation while exacerbating output contraction relative to expansion the apparent trade off between changes in real and nominal trends provides further support to the supply side explanation of asymmetry

dynamics in a transactions based monetary growth model abstract this paper characterizes the dynamics of a monetary endogenous growth model in which money is introduced into the system via a transactions cost technology a monetary equilibrium that either satisfies the friedman rule of the optimum quantity of money or accommodates the zero inflation rate policy is dynamically unstable with cagan like hyperinflation the monetary equilibrium may either be unstable or exhibit dynamic indeterminacy in which a variety of equilibrium outcomes emerge in transition the rate of monetary expansion the relative magnitudes of the intertemporal elasticity of substitution and the production technological parameter are crucial for determining the stability property of the model

anticipated inflation in a monetary economy with endogenous growth this paper makes a new attempt to investigate the role of anticipatedmonetary growth in economic growth combining the barro 1990 rebelo 1991 type endogenous growth model with sidrauski s 1967 framework we show that the pre announcement of money supply behaviour may have significant effects on the rate of growth during the transition process the key factor indetermining adjustment patterns of the economy to anticipated monetary changes is the degree of relative risk aversion however changes in the rate of monetary growth do not affect the rate of long run growth regardless of the degree of relative risk aversion

multiple equilibria in dynamic rational expectations models a critical review abstract multiple equilibria are a ubiquitous feature of dynamic rational expectations models researchers have been divided on the implications of this phenomenon some have viewed this as a reflection of reality and a possible explanation of a wide range of economic phenomena others have suggested various selection criteria for choosing one among the many equilibria this paper reviews the major selection criteria that have been proposed and through application to three well known models shows under what circumstances one might expect them to choose the same or different equilibria in addition this paper proposes a new criteria based on the limit of finite horizon equilibria and investigates its relation to the other criteria

on the diversity of growth patterns with habit formation abstract we study a case in the growth model of carroll overland and weil with habit formation that has not been examined previously we show the existence of a continuum of balanced growth paths which exhibit a rich diversity of growth patterns such as catching up overtaking or lagging behind our results are in sharp contrast to their unique balanced growth path

a theory of disasters and long run growth abstract this paper develops a unified framework in which various types of catastrophic shocks can be simultaneously considered within a standard model of economic growth we first establish the basic existence and equivalence results we then apply the framework to an endogenous growth model to consider the influence of disasters on the long term equilibrium and the transition phase the result shows that while experiencing disasters may lower the average growth rate of the affected countries there exist various channels through which the risk of disasters and long term economic performance are positively correlated this finding reconciles the apparently contradictory evidence in recent empirical studies

corrigendum to congestible public goods and local indeterminacy a two sector endogenous growth model journal of economic dynamics control 31 7 2007 2486 2518

congestible public goods and local indeterminacy a two sector endogenous growth model abstract this paper shows that the congestible public goods can generate local indeterminacy in a two sector constant return human capital enhanced growth model while the productive public good exerts positive sector specific externalities the congestion effect generates negative aggregate externalities the sector specific externalities alone arising from productive public goods cannot establish local indeterminacy without the combination of negative externality in a model with social constant return technology congestible public good generates local indeterminacy if the degree of productive public good externality and the degree of congestion effect are large enough the condition for indeterminacy is independent of the factor intensity rankings the conditions are quantitatively assessed and the required parameter values for the degrees of public good externality and congestion are consistent with the estimated values in existing literature

comments on dynamics of income distribution using the ramsey cass koopmans model with heterogeneous agents this note presents the explicit relationship between the individual s asset holding and the aggregate capital stock with the aid of this relationship is examined the dynamics of income distribution as the economy expands finally some examples are presented contrary to the conjecture made in li xie and zou 2000 showing that the income can still improve over time even when the aggregate production function is convex jel classification d3 o1 o4 commentaires sur dynamique de la distribution du revenu a l aide d un modele de type ramsey cass koopmans avec des agents heterogenes cette note presente la relation explicite entre le stock d actif detenu par l individu et le stock de capital agrege a l aide de cette relation on examine la dynamique de la distribution du revenu a proportion que l economie croit enfin certains exemples sont presentes qui contredisent la conjecture proposee par li xie et zou 2000 a savoir que le revenu peut s accroitre dans le temps meme quand la fonction de production agregee est convexe

the relation between price changes and trading volume a survey this paper reviews previous and current research on the relation between price changes and trading volume in financial markets and makes four contributions first two empiri cal relations are established volume is positively related to the magnitude of the price change and in equity markets to the price change per se second previous theoretical research on the price volume relation is summarized and critiqued and major insights are emphasized third a simple model ofthe price volume relation is proposed that is consis tent with several seemingly unrelated or contradictory observations and fourth several directions for future research are identified

sustained endogenous growth with decreasing returns and heterogeneous capital abstract the possibility of sustained long run growth is typically associated with the presence of some endogenous engine of growth it may allow the economy to grow without bound despite the use of some non reproducible resources such situations can lead to dynamic models combining the features of sustainable growth and decreasing returns one sector models of this kind have recently attracted much attention in macroeconomics applications their approximate linearity for the purposes of long run analysis has been noted this paper is aimed at establishing the general fact dynamic models one or multi sector which are characterized by sustained endogenous growth with non increasing returns display the patterns of optimal growth asymptotically equivalent to those generated by models with linear technology i consider a neoclassical growth model with heterogeneous capital develop its linear counterpart and prove their asymptotic equivalence in terms of long run optimal growth rates and cross sectoral profiles of consumption real interest rates and relative prices this result also implies the non substitution theorem for the neoclassical dynamic model of sustained growth optimal input profiles relative prices and interest rates are asymptotically independent of intertemporal preferences

housing and endogenous long term growth abstract in this paper we develop an endogenous growth model where housing plays a role as a consumption and an investment good for households as an input to production and as a production sector we show that the long term endogenous growth rate for the economy while not affected by housing related preference parameters depends critically on housing related production parameters the key modeling assumption is that housing and other assets in the economy are not perfect substitutes with this we can show that the endogenous long term growth rate depends on the relative price of housing and other types of capital accordingly the effects of productivity shocks on growth can be understood through their effects on the relative asset price and the corresponding changes in capital intensity we show that productivity shocks to the three sectors of production manufacturing construction and educational and training activities have positive effects on long term growth for reasonable parameter values however the responsiveness of the long term growth rate to shocks in construction is greater than responsiveness to shocks in manufacturing

linear non linear and essential foreign exchange rate prediction with simple technical trading rules abstract this paper investigates the predictability of spot foreign exchange rate returns from past buy sell signals of the simple technical trading rules by using the nearest neighbors and the feedforward network regressions the optimal choices for nearest neighbors hidden units in a feedforward network and the training set are determined by the cross validation method which minimizes the mean square error although this method is computationally expensive the results indicate that it has the advantage of avoiding overfitting in noisy environments and indicate that simple technical rules provide significant forecast improvements for the current returns over the random walk model

imperfect capital markets and the monetarist black box liquidity constraints inflation and the asymmetric effects of interest rate policy in this paper we examine the effects of unanticipated changes in interest rates on consumers expenditure in a model in which capital markets are imperfect we show that where constraints exist on the amounts individuals can borrow individuals may rationally choose to borrow up to the limits of such constraints over part of their lifetimes such liquidity constrained individuals in general have a higher marginal propensity to consume out of changes in current income than is the case with liquidity unconstrained individuals changes in interest rates which have the effect of redistributing income between liquidity constrained monetary debtors and liquidity unconstrained creditors will thus have a net effect on aggregate consumption we further show that this effect operates asymmetrically in the sense that an increase in interest rates will have a larger net impact than a fall formally we examine the impact of a change in the interest rate which we assume exogenous on the behaviour of an individual consumer the analysis is thus independent of the source of the interest rate shock 2 but we believe an important application of the model concerns the transmission mechanism through which monetary policy operates in this paper we do not consider the relationship between the supply of money and interest rates but simnply follow standard economic theory in assuming that monetary policy operates through the impact of interest rates on expenditure it is the mechanism linking interest rate changes to expenditure that has proved hard to identify and it is in this respect that our analysis may be relevant in suggesting a process through which interest rates can affect expenditure which appears to have been neglected hitherto the model provides a possible channel of transmission of monetary policy different from those usually considered 3 in so doing the model may offer some insight into the transmission processes within the monetarist black box and indeed suggests that the efficacy of monetary policy may in part depend on the existence of capital market imperfections

bottlenecks and the phillips curve a disaggregated keynesian model of inflation output and unemployment benchmark macroeconomic models of output and inflation combine the demand side of the economy with aggregate supply equations based upon some version of the phillips curve in contrast to classical and new classical models such as lucas i972 and sargent 1979 chs i xii and xvi in which prices jump instantaneously to market clearing levels the gradual price adjustment approach represented by tobin 1972 laidler and parkin i975 section 4 barro and grossman 1976 ch 5 sargent 1979 ch ii and ch v i okun i98i and perry i983 take wages and or prices to be predetermined at an instant in time while their rates of change depend on the level of aggregate output in the prototype complete macroeconomic model incorporating this approach output is determined by aggregate demand equations while the augmented phillips curve specifies that prices move in a direction which will tend to return output to its equilibrium value this short run keynesian long run monetarist character is typical of many structural macroeconometric models it is the standard textbook account found for example in dornbusch and fischer i98i and is implicit in much current research there are fundamental questions of consistency in the type of model just described the central difficulty is that with wages and prices predetermined the non market clearing analysis ofbarro and grossman i 976 ch 2 and malinvaud i977 is applicable but in this world the aggregate demand equations are decisive only in the keynesian regime in the other regimes which must arise at high levels of aggregate demand the effective supplies of output or labour or both must be modelled indeed at the aggregate level it is difficult to provide a coherent account of how it is possible to have output above its equilibrium value since this would require labour and output in excess of their notional supplies violating barro and grossman s min condition that quantities be determined by the short side of the market an appealing line for addressing this last difficulty is to disaggregate markets an approach taken by hansen i970 tobin i972 and barro and grossman i976 ch 5 however because each market can be in either excess supply or demand a formal fixed price general equilibrium model appears to be intractable due to the resulting multiplicity of regimes and is not attempted by these authors in this paper these problems are overcome in a disaggregated model in which

transitional dynamics and economic growth in the neoclassical model neoclassical transitional dynamics are a central element of standard macroeconomic theory quantitative experiments with the fixed savings rate models of the 1960s showed lengthy transitions thus potentially rationalizing sustained differences in growth rates across countries the authors investigate quantitative transitional dynamics in various neoclassical models with intertemporally optimizing households lengthy transitions occur only with very low intertemporal substitution generally when one tries to explain sustained economic growth with transitional dynamics there are extremely counterfactual implications these result from the fact that implied marginal products are extraordinarily high in the early stages of development copyright 1993 by american economic association

divergence in economic performance transitional dynamics with multiple equilibria abstract special pairs of the utility functions and the production functions are used in this paper to uncover the transitional dynamics in a lucas model of growth the main findings are as follows a continuum of equilibria exists if the external effect of human capital in goods production is sufficiently large the process of lagging behind catching up with and overtaking that we often observe in the world economy can be explained finally some equilibrium paths are shown to have such complicated patterns that the dynamics conjectured by lucas are too simple to be correct journal of economic literature classification numbers o41 c61

an endogenous growth model with expanding ranges of consumer goods and producer durables this paper constructs a growth model with the feature that the range of differentiated consumption goods and the range of specialized producer durables are both endogenously determined the author shows that this feature allows the domestic investment rate to be closely associated with the domestic saving rate even when international financial markets are integrated he also argues that this feature is important in explaining the observed cross country diversity in growth performance and saving behavior copyright 1998 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

the transitional dynamics of fiscal policy long run capital accumulation and growth this paper analyzes the effects of fiscal policies in a non scale growing economy with public and private capital the equilibrium dynamics are characterized and we contrast the dynamic effects of government expenditure on investment and expenditure on consumption under four alternative modes of tax financing most of our attention focuses on the numerical simulations of a calibrated economy the results emphasize the lengthy transition periods which implies that policies have sizeable level effects leading to substantial welfare effects even though long run growth rates are unaffected the paper highlights the intertemporal dimensions of fiscal policy and the tradeoffs these involve for economic performance especially growth and welfare

on endogenous growth with physical and human capital this paper presents a class of models in which agents may devote part of their nonleisure activities to going to school so as to increase the efficiency units of labor they supply to the firms and the wages they receive the interaction among the technology of human capital accumulation and agents preferences will determine endogenously the economy s rate of growth given a constant returns to scale technology for physical capital accumulation we characterize the set of steady states as a ray from the origin and show the global convergence of every off balanced path to some point on this ray further properties concerning the dynamic evolution of the state and control variables around the ray of steady states are also established our analysis is useful to understand the role played by the technologies of physical and human capital in the process of accumulation and to evaluate the impact of policies geared toward attaining higher levels of capital our results highlight the importance of human capital

factor taxation and labor supply in a dynamic one sector growth model abstract this paper studies a class of ak type growth models with factor income taxes public capital stock and labor leisure trade offs while a higher capital tax rate reduces economic growth in the short run the long term growth effect is ambiguous and remains ambiguous even if the level of tax rate is larger than the degree of government externality a higher labor income tax rate has ambiguous growth effects both in the short and long runs however if the intertemporal elasticity of substitution for labor supply is sufficiently small a higher labor tax rate always lowers economic growth in the long run despite the existence of productive government taxation

on the stubbornness of sticky prices this paper presents a simple menu cost example in which there is a clear distinction between price stickiness and downward rigidity of prices while price stickiness may or may not exist in menu cost models downward rigidity shows up whenever there is a reduction of the expected rate of inflation this reduction changes the optimal target and threshold for each firm for some it also implies an immediate increase of their own price this upward jump of prices in case of a disinflationary attempt is interpreted as downward rigidity since there are no symmetric forces when expected inflation increases copyright 1991 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

indeterminacy and fiscal policies in a growing economy this paper studies the dynamic properties of a standard one sector model of endogenous growth with inelastic labor supply in which capital taxes are used to nance public production and consumption services the government is benevolent and chooses its tax policy by taking into account the decentralized competitive equilibrium within this second best setup we establish conditions for multiple balanced growth paths in conjunction with indeterminacy of transitional dynamics the mechanism for global and local indeterminacy is a simple combination of public production services that provide production externalities to private rms and hence cause a wedge between private and social returns public consumption services that provide direct utility to households and endogenously chosen distorting taxes

endogenous growth cycles current explanations why a growing economy necessarily goes through periods of high and low growth predict countercyclical r d investment as this is very controversial from an empirical perspective a stochastic poisson model of endogenous growth cycles is presented where the determinants of the cyclical behaviour of r d investment are analytically studied providing an explicit expression for the expected length of a cycle shows that high frequency fluctuations can indeed be understood by this approach it is also shown how small technological improvements translate into large aggregate fluctuations

stability properties of a growth model abstract in existing one sector endogenous growth models a condition for indeterminacy is that labour demand is upward sloping in this paper we present conditions for indeterminacy given decreasing returns to labour

asymmetry in the effects of monetary and government spending shocks contrasting evidence and implications magda kandil 1 introduction recent research on business cycles has produced evidence that demonstrates the asymmetric effects of monetary shocks on economic variables 1 specifically the effect of expansionary monetary shocks on economic variables may be different from that of contractionary shocks the empirical evidence has stimulated efforts to provide an adequate theoretical explanation to the observed asymmetry sources of asymmetry have varied sharply in the theoretical literature primary explanations may be classified into supply side and demand side sources of asymmetry a strand of the theoretical literature has viewed asymmetry of economic fluctuations to be a supply side phenomenon demand shifts along a kinked supply curve are likely to produce varying effects on the economy as to the explanation of the kinked shape of the supply curve competing models offer explanations in one direction some have explained the asymmetric shape of the supply curve by conditions in the labor market this possibility arises in the context of models that advocate the contractual nominal wage rigidity explanation of business cycles the stipulation of wage contracts may allow for asymmetric wage indexation for example if wages are more responsive to expansionary demand shocks compared to contractionary shocks asymmetric wage indexation is consistent with a kinked supply curve in labor and output markets consequently expansionary demand shocks are likely to move the economy along a steeper supply curve 2 alternatively supply side asymmetry may be attributed to conditions in the p roduct market that differentiate price adjustment in the upward and downward directions faced with menu costs firms may be inclined for more frequent and larger adjustments of prices in the upward compared to the downward direction this possibility also is consistent with a steeper supply curve in the face of positive demand shocks compared to negative shocks 3 another line of the theoretical explanations of asymmetric economic fluctuations has emphasized possible asymmetry on the demand side of the economy conditions in the money and or goods markets may differentiate the response of aggregate demand to positive and negative shocks 4 this possibility differentiates the size of aggregate demand shifts in the face of expansionary and contractionary shocks in the absence of supply side asymmetry demand side asymmetry differentiates the severity of economic fluctuations in the face of positive and negative shocks the primary difference between demand side and supply side explanations concerns the output and inflationary effects in response to asymmetry supply side asymmetry produces a trade off between the asymmetric effects of demand shocks on output and their inflationary effects on wages and or prices the response of output growth is larger in the face of demand contraction compared to expansion concurrently the inflationary effect of demand shifts exceeds the deflationary effect on nominal wage and or price in contrast demand side asymmetry produces a positive correlation between the asymmetric effects of demand shocks on real output growth and nominal wage and price inflation that is larger output contraction relative to expansion correlates with smaller inflation relative to deflation of the nominal wage and price in the face of demand shocks the purpose of this investigation is to contrast asymmetry on the demand and supply sides in the face of two specific demand shocks monetary and government spending shocks demand and or supply conditions may differentiate the expansionary and contractionary effects of monetary and fiscal policies the article s analysis will highlight the specifics of this asymmetry the empirical evidence sheds some light on potential explanations of this asymmetry as follows conditions in the credit market and the behavior of ricardian consumers may differentiate the effects of expansionary and contractionary government spending shocks on aggregate demand

non separable utility function and indeterminacy of equilibrium in a model with human capital abstract this paper shows that non separability of utility function may produce indeterminacy of equilibrium in the representative agent models with labor leisure choice by using a two sector model of endogenous growth we show that if the utility function is not additively separable between consumption and leisure indeterminacy may emerge even in the absence of external increasing returns

foreign exchange trading models and market behavior abstract the contributions of this paper are twofold first the performance of a widely used commercial real time trading model is compared with a simple exponential moving average model second the trading models are used as diagnostic tools to evaluate the statistical properties of foreign exchange rates the results presented in this paper have a general message to the standard paradigm in econometrics it is not sufficient to develop sophisticated statistical processes and choose an arbitrary data frequency e g one week one month annual etc claiming afterwards that this particular process does a good job of capturing the dynamics of the data generating process in financial markets the data generating process is a complex network of layers where each layer corresponds to a particular frequency a successful characterization of such data generating processes should be estimated with models whose parameters are functions of intra and inter frequency dynamics in other fields such as in signal processing paradigms of this sort are already in place our understanding of financial markets would be increased with the incorporation of such paradigms into financial econometrics our trading models within this perspective help to observe this subtle structure as a diagnostic tool

the asymmetric stabilizing effects of price flexibility historical evidence and implications the evidence of business cycles across a sample of industrial countries indicates asymmetry in the output and price adjustments to aggregate demand shocks in the pre and post war periods upward price flexibility is significant in moderating output fluctuations across countries in the pre and post war periods nonetheless the effect of upward price flexibility in accelerating trend price inflation is more evident across countries in the post war period compared to the pre war period the combined evidence is consistent with a steeper supply curve in the face of expansionary demand shocks that increases the stabilizing effect of upward price flexibility in contrast a flatter supply curve in the face of negative demand shocks has countered the stabilizing function of downward price flexibility which appears insignificant across countries in the pre and post war periods in addition a slower demand response to price change during recessions has further reinforced the contractionary effect on output d

temporal aggregation in a multi sector economy with endogenous growth abstract we provide a theoretical treatment of temporal aggregation in models that exhibit long term endogenously generated steady growth hence generalizing our previous analysis econometrica 62 1994 635 656 we introduce the property of steady growth invariance that the long term growth of the continuous time economy not be affected by the discretization which imposes consistency restrictions on the joint formulation of preferences and stock accumulation of the discrete time approximation we establish under mild conditions these restrictions in the form of necessary and sufficient conditions on the discretization

a general two sector model of endogenous growth with human and physical capital balanced growth and transitional dynamics abstract we examine a two sector endogenous growth model with general constant return to scale production technologies governing the evolution of human and physical capital we prove the existence uniqueness and saddle path stability of the balanced growth equilibrium a dual approach drawing on techniques from international trade theory is used to provide complete characterization of the transitional dynamics of consumption goods and education outputs human and physical capital inputs and the relative price of human capital investment we investigate the long run effects of changes in time preference and factor taxation and show the emergence of instability or indeterminacy when factor taxes are too distortionary journal of economic literatureclassification number d90

dynamics of income distribution in this paper we have obtained closed form solutions in cass koopmans growth models with heterogeneous agents the relationship between the form of the production function and the dynamics of income distribution is made explicit we then use this relationship to determine what production structure is simultaneously consistent with facts on growth and income inequality our empirical findings give support to models with decreasing returns in the reproducible factor jel classification d3 o1 o4 dans ce memoire les auteurs obtiennent des solutions pour des modeles de croissance a la cass koopmans dans le cas ou les agents sont heterogenes on explicite la relation entre la forme de la fonction de production et la dynamique de la repartition des revenus on utilise alors cette relation pour determiner quelle structure de production est arrimee aux faits connus a la fois quant a la croissance economique et a la repartition des revenus les resultats empiriques supportent les modeles ou les rendements sur les acteurs de production reproductibles sont decroissants

asymmetric effects of positive and negative money supply shocks this paper examines whether positive and negative money supply shocks have symmetric effects on output the results are consistent with the hypothesis that positive money supply shocks do not have an effect on output while negative money supply shocks do have an effect on output this finding is independent of whether or not expected money is assumed to affect output the results reported in this paper imply that the fed could increase the growth rate of real output by reducing the standard deviation of unexpected changes in the money supply

indeterminacy and endogenous growth with social constant returns abstract by examining endogenous growth models with physical and human capital this paper demonstrates that indeterminacy of equilibrium may emerge even in the absence of increasing returns to scale the model we examine consists of two production sectors one produces final goods and the other produces new human capital both sectors use physical as well as human capital it is assumed that while the private technology of the representative firm in each sector exhibits decreasing returns to scale the social technologies of both sectors satisfy constant returns because of the presence of sector specific externalities we demonstrate that a small divergence between private and social factor intensity conditions generates indeterminacy of equilibrium rather easily even under constant returns intuitive implications of the source of indeterminacy and a generalization of the model are also presented journal of economic literature classification numbers d90 o40 o41