coordination incentives and the ratchet effect a concept of coordination costs is incorporated into a nonlinear variant of the model studied by freixas guesnerie and tirole 1985 on the dynamic regulation of a firm with adverse selection and no commitment the ratchet effect greater coordination costs give rise to two opposing effects first the value to the center of obtaining information increases since this information can be used to eliminate coordination costs second due to the nature of incentive compatibility constraints the costs of inducing revelation also increase it is shown that the second effect always dominates greater coordination requirements increase the relative social costs of inducing separation revelation as opposed to pooling over and above any additional value of information to the center a possible application of this theory to the experience of the soviet economy is discussed

public health spending old age productivity and economic growth chaotic cycles under perfect foresight abstract this paper analyses the dynamics of a double cobb douglas economy with overlapping generations and public health investments that affect the supply of efficient labour of the old aged it is shown that the positive steady state of the economy is unique moreover we provide necessary and sufficient conditions for the emergence of endogenous deterministic complex cycles when individuals are perfectly foresighted interestingly i the equilibrium dynamics shows rather complicated phenomena such as a multiplicity of bubblings depending on the size of the public health system and ii the higher the degree of thriftiness the likelier an economy is exposed to endogenous fluctuations because the need to save when young to support consumption when old is reduced

wealth accumulation over the life cycle and precautionary savings this article constructs and simulates a life cycle model of wealth accumulation and estimates the parameters of the utility function the rate of time preference and the coefficient of risk aversion by matching the simulated median wealth profiles with those observed in the panel study of income dynamics and in the survey of consumer finances the estimates imply a low degree of patience and a high degree of risk aversion the results are used to study the importance of precautionary savings in explaining wealth accumulation they imply that wealth accumulation is driven mostly by precautionary motives at the beginning of the life cycle whereas savings for retirement purposes become significant only closer to retirement

a moral hazard trap to growth this paper studies the consequences of asymmetric information in the investment sector upon economic growth in this paper the information asymmetry generates a moral hazard problem this moral hazard problem restricts financial arrangements it is shown that these restrictions make even the long run competitive equilibrium income dependent upon history this result also holds in case there is perfect capital mobility however when there is capital mobility the government may be able to intervene in a pareto improving way copyright 1992 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

the ratchet tautness and managerial behavior in soviet type economies suppose a manager receives a fixed bonus for reaching a target plus an overfulfillment reward each period the target is fixed by the manager s superiors in a manner that takes into account past performance this is the ratchet managers facing this incentive scheme will choose an activity level which takes into account the dynamic effects of current behavior on future earnings the conventional wisdom contends that managers will understate capacity by producing below maximum potential we show that this behavior occurs only under certain conditions more importantly we also show that the ratchet can be used to induce managers to reveal the growth rate of average capacity

capital accumulation in a stochastic overlapping generations model with social security abstract this paper analyzes the impact of pay as you go financed social security on the stochastic process for the capital stock in a stochastic overlapping generations model it is shown that the probability distribution of the capital stock in absence of social security dominates that in a pay as you go system in the sense of stochastic dominance furthermore the study demonstrates that the sufficient conditions ensuring the existence and uniqueness of stationary equilibria in a pay as you go system are more restrictive than in the model without social security journal of economic literature classification numbers c62 h55

the behaviour of state firms in eastern europe pre privatisation in this paper we explore the behaviour of state firms pre privatisation the incentives and the constraints facing managers and the nature and the power of the coalitions within the firms we show that managers on low incentive payment schemes with little formal stake in privatisation and who face possible redundancy have little incentive to embark on restructuring hardened budget constraints career concerns and potential stakes in the privatised firm however may strengthen managerial incentives to restructure we then introduce an influence function which captures how the distribution of winners and losers within the firm and size of their loss and gain affects the probability of restructuring the function illustrates how strong opposition coming from large concentrated losses is likely to dominate diffuse support from small widely distributed gains government measures such as hardening budget constraints financing of severance payments and selective debt writedowns affect the distribution of gainers and losers and may be used to overcome blocking coalitions and increase support for restructuring examination of a range of enterprise case studies vindicates our hypothesis that the structure of control and production strongly affect incentives to restructure centralised management structures the presence of non performing units and a functional division of activities have all acted as serious constraints on the unbundling restructuring process whilst the removal of state subsidies has been critical in forcing firms to rationalise production and unbundle activities

the transfer paradox in a one sector overlapping generations model abstract this paper examines the effects of international income transfers on capital accumulation and welfare in a one sector overlapping generations model it is shown that a strong form of the transfer paradox in which the donor country experiences a welfare gain while the recipient country experiences a welfare loss may occur both in and out of steady state in addition it is shown that a weak form of the transfer paradox where either the donor or recipient but not both experiences a paradoxical welfare effect may characterize all segments of the transition path not already characterized by the strong transfer paradox

on the empirics of foreign aid and growth the present paper re examines the effectiveness of foreign aid theoretically and empirically using a standard olg model we show that aid inflows will in general affect long run productivity the size and direction of the impact may depend on policies deep structural characteristics and the size of the inflow the empirical analysis investigates these possibilities overall we find that aid has been effective in spurring growth but the magnitude of the effect depends on climate related circumstances finally we argue that the collier dollar allocation rule should be seriously reconsidered by donor agencies if aid effectiveness is related to climate the usefulness of foreign aid in promoting growth in developing countries has been an area of controversy ever since rosenstein rodan in 1943 advocated for aid to eastern and south eastern europe browsing through successive editions of a leading textbook in development economics provides a telling illustration of how the confidence in aid effectiveness dwindled over the years in the first edition of leading issues in economic development meier 1964 dedicated a full 18 page section to the issue of foreign aid he started out asking how much aid by the time of the sixth edition meier 1995 the treatment of foreign aid had been cut into half and the questions in focus were why official assistance and does aid work in the 2000 edition meier and rauch 2000 foreign aid is not even listed in the index

determinacy of equilibrium in stationary economies with both finite and infinite lived consumers abstract we consider the determinacy of perfect foresight equilibrium near steady state equilibria of stationary infinite horizon economies the work of t j kehoe and d k levine econometrica 53 1985 433 453 is generalized by the inclusion of both infinite lived agents and overlapping generations of finite lived agents and the inclusion of production and non depreciating pure rents we show that indeterminacy is possible in robust examples and that the dimension of the indeterminacy can be as large as the number of goods per period we also discuss extreme cases in which determinacy is guaranteed

competition and the ratchet effect in labor markets the ratchet effect refers to a situation where workers subject to performance pay choose to restrict their output because they rationally anticipate that firms will respond to higher output levels by raising output requirements or by cutting pay we model this effect as a multiperiod principal agent problem with hidden information and study its robustness to labor market competition both theoretically and experimentally consistent with our theoretical model we observe substantial ratchet effects in the absence of competition which are nearly eliminated when competition is introduced this is true regardless of whether market conditions favor firms or workers

existence and uniqueness of steady state equilibrium in a two sector overlapping generations model abstract in his seminal paper galor a two sector overlapping generations model a global characterization of the dynamical system econometrica 60 1992 1351 1386 establishes conditions for the existence of equilibrium in the two sector overlapping generations olg model although appealing theoretically these conditions are implicit and not easy to apply this paper develops new theorems on the existence and uniqueness of steady state equilibrium in the two sector olg model we provide explicit conditions on the utility and production functions for the existence and uniqueness of equilibrium with which one only needs to check the derivatives of the production and utility functions and their interactions without requiring solving for the savings function and its derivatives we present detailed steps to check the existence and uniqueness of equilibrium and provide illustrative examples

managerial career concerns privatization and restructuring in transition economies abstract we set up a dynamic adverse selection model to explain how career concerns may induce managers in state owned enterprises soes to restructure their firms it is shown how government monopsony power over managers led to the ratchet effect under a socialist economy even under reforms coming short of privatization the introduction of a managerial labour market through privatization introduces competition for managers and eliminates the ratchet effect thereby inducing managers to restructure the model is consistent with the empirical evidence of soes restructuring in transition economies

the savings multiplier we develop a theory of macroeconomic development based on the novel concept of savings multiplier capital accumulation changes relative prices and income shares between generations creating further incentives to accumulate and thereby rising saving rates as the economy develops the savings multiplier hinges on two mechanisms first accumulation raises wages and leads to redistribution from the consuming old to the saving young second higher wages raise the price of services consumed by the old and the anticipation of such price rise prompts the young to increase their savings our theory captures important aspects of china s development and suggests new channels through which the one child policy and the dismantling of cradle to grave social benefits have fuelled china s savings and accumulation rates

increasing returns and crowding out abstract this paper explores how public debt interferes with the accumulation of physical capital when the technology displays a production externality of the arrow romer type we identify conditions under which a small positive amount of debt will prevent the economy from ever approaching the stock of capital that it would achieve if public debt were zero we also show that the interaction of debt and production externalities may produce bounded possibly cycling capital stock sequences in economies where sustained growth rates are possible with zero national debt finally welfare issues concerning the relation between static and dynamic inefficiencies are discussed

search unemployment in an overlapping generations setting this paper constructs an overlapping generations model in which the steady state equilibrium is characterized by the existence of search unemployment this dynamic general equilibrium model captures the possible existence of search unemployment in the long run despite the absence of exogenous shocks furthermore it allows for the wage offers distribution to be determined endogenously the effect of partial revelation of information on the existence of search unemployment in the long run is examined it is shown that search unemployment may be eliminated in the long run despite the persistence of the state of imperfect information this paper develops an overlapping generations model in which the steady state equilibrium is characterized by search unemployment 2 unemployment is created via a rational rejection of available wage offers in favor of further search for potentially more attractive offers the proposed dynamic general equilibrium model allows for the existence of long run search unemployment despite the absence of exogenous shocks and permits the presence of an endogenously determined nondegenerate wage offer distribution 3 the paper analyzes the trade off between revelation of information and the level of search unemployment in the long run in the absence of external disturbances the level of search unemployment would be expected to decrease as information becomes available in particular if information is fully revealed search unemployment is naturally eliminated exploring the likelihood of the existence of long run search unemployment in a deterministic world this study provides an example of partial revelation of information which eliminates search unemployment in the long run despite the persistence of the state of imperfect information 4 the proposed model presents a discrete infinite time horizon world where economic activity is conducted under imperfect information in every period a single homogeneous good is produced using two factors capital and labor in the production process the aggregate endowment of labor is exogenously given in

dynamic efficiency of steady state equilibria in an overlapping generations model with productive capital abstract this paper establishes sufficient technological conditions under which for any feasible set of well behaved preferences stationary over investment relative to the golden rule is ruled out and the economy s steady state equilibria are therefore dynamically efficient

an olg model of global imbalances in this paper we investigate the relationship between east asian countries high propensity to save and global imbalances in a two country olg model with production the saving behavior of emerging economies and capital outflows to the united states can be attributed to their poor pay as you go systems the model predicts that emerging countries run a trade surplus only as long as the long run growth rate of the economy is higher than the real interest rate capital overaccumulation case the low real interest rate in the us is therefore evidence in favor of the hypothesis that there is a global saving glut in the world economy the model can explain why the us current account deteriorated gradually and only in the late 1990s although the net foreign asset position had already turned negative in the early 1980s finally the analysis also implies that an improvement of the pay as you go system in china would have the effect of reducing the imbalances in accordance with the theory we find that the higher is the percentage of the working population covered by the pay as you go system the lower are savings and the current account balance in a cross section of countries

the financial and operating performance of newly privatized firms an international empirical analysis this study compares the pre and postprivatization financial and operating performance of 61 companies from 18 countries and 32 industries that experience full or partial privatization through public share offerings during the period 1961 to 1990 our results document strong performance improvements achieved surprisingly without sacrificing employment security specifically after being privatized firms increase real sales become more profitable increase their capital investment spending improve their operating efficiency and increase their work forces furthermore these companies significantly lower their debt levels and increase dividend payout finally we document significant changes in the size and composition of corporate boards of directors after privatization the last fifteen years have witnessed a significant global shift away from state socialism towards entrepreneurial capitalism one of the most important and visible aspects of this trend has been the enthusiasm with which governments of all political persuasions have sold their state owned enterprises soes to private investors in hopes that the generally unsatisfactory economic performance of these firms can be improved by the discipline of private ownership this denationalization process given its current title of privatization by the conservative government of margaret thatcher in

managerial incentive problems a dynamic perspective the paper studies how a person s concern for a future career may influence his or her incentives to put in effort or make decisions on the job in the model the person s productive abilities are revealed over time through observations of performance there are no explicit output contingent contracts but since the wage in each period is based on expected output and expected output depends on assessed ability an implicit contract links today s performance to future wages an incentive problem arises from the person s ability and desire to influence the learning process and therefore the wage process by taking unobserved actions that affect today s performance the fundamental incongruity in preferences is between the individual s concern for human capital returns and the firm s concern for financial returns the two need be only weakly related it is shown that career motives can be beneficial as well as detrimental depending on how well the two kinds of capital returns are aligned it is well understood by now that informational externalities may place special demands on the organization of economic exchange simple price mediated markets will frequently fail in the presence of asymmetric information in that case more elaborate contractual arrangements have to be used as substitutes for the price system lately considerable effort has been devoted to the analysis of contracting under incomplete information with the objective to understand the range of economic institutions that emerge in response to the failure of the price system the analysis of moral hazard has played a prominent role in this development moral hazard problems arise when for some reason or another transacting parties cannot contract contingent on the delivery of the good for instance in buying labour services it may be that the amount of labour supplied is not directly observable precluding a simple exchange of wage for labour as a partial remedy to this problem an imperfect mutually observed signal about the supply of labour can be used as a proxy in the contract frequently output is taken as such a proxy the drawback is that output is often influenced by other factors than labour input which induce undesirable risk into the contract one is therefore faced with a tradeoff between allocating risk associated with incomplete observability and providing incentives for a proper supply of labour gaining insight into this tradeoff is important not only for understanding contracting in the small e g managerial incentive schemes but also because it is closely related to the fundamental tension between equity and efficiency in the society as a whole while our understanding of moral hazard has advanced a lot in past years it is clear that much work remains an important question that has received little attention until

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

temporary and permanent migration with and without an immobile factor abstract this paper develops two two country overlapping generations models one with and one without an immobile factor to study temporary and permanent migration temporary migration is shown to be equivalent to international lending and borrowing one strong result found in the literature that if natives of each country are homogeneous permanent migration leads to the migration of the entire population of the impatient country in the long run is overturned welfare effects of migration are analyzed

job transfers and incentives in complex organizations thwarting the ratchet effect many complex organizations such as planned soviet enterprises and the u s military routinely transfer employees between jobs since this sacrifices job specific human capital the practice is puzzling this article shows that regular job transfers may be part of an optimal incentive scheme in organizations plagued by the ratchet effect the ratchet effect arises when an employer is uncertain as to the productivity of the various positions or jobs within an organization workers in highly productive jobs then have an incentive to disguise the productivity of their jobs by expending low effort and producing low output this avoids having the employer construct more demanding remuneration schemes once the high productivity of a job becomes known job transfers break the link between current performance and future incentive schemes and hence remove the incentive stifling implications of the ratchet effect this article examines the tradeoff between providing more effective incentives via job transfers and the accompanying sacrifice of job specific human capital establishes conditions under which job transfers are optimal and develops comparative static results

the virtues of gradualism and legitimacy in the transition to a market economy this paper presents a simplified model of sectoral restructuring in eastern europe a move towards allocative efficiency is desired by the reform minded government but the shift to higher productivity which such efficiency requires would lead to massive layoffs and labour reallocation in the transition period we look at the impact of political constraints unanimity and or majority worker approval on reform proposals when the government faces a heterogeneous workforce holding private information on relative outside opportunities when the budgetary consequences of exit compensations are so important as to make partial reforms preferable to full reforms gradualism emerges as the optimum in a dynamic context without government commitment it is also shown that under democratic majority rule a government in control of the agenda of reforms can win majority approval for plans which end up hurting majority interests intertemporally by threatening to switch majorities in future reform proposals this abstract was borrowed from another version of this item this abstract was borrowed from another version of this item

growth and convergence when technology and human capital are complements i introduction explaining the persistent productivity differences between countries has long been a focus of the theoretical and empirical growth literature while a large body of work on the conditional convergence hypothesis emphasizes the role of factor accumulation it has been suggested that an explanation of the observed phenomenon is incomplete if not accounting for cross country differentials in total factor productivity tfp 1 one aspect that has received relatively less attention is an apparent history dependence of countries productivity rankings eaton and kortum 1997 report that despite large differences in growth rates over a 40 year period the five leading economies in the world only show two reversals in relative position 2 comparing the labor productivity in seven countries to the u s level over a period of more than 30 years similarly suggests that economies often retain their relative positions with countries starting out at lower productivities also converging to lower levels figure 1 this article presents a model that can provide an explanation for persistent cross country tfp differentials we make two key assumptions first the intellectual property ip embodied in new production technologies is subject to worldwide patent protection the owner of a technology can freely choose where in the world it will be used second we assume that there is complementarity between human capital and the level of technology used in production that is the relative productivity advantage of a new technology is bigger when it is used by more skilled workers we show that under these conditions new technologies are first introduced in the most human capital rich country and subsequently passed on to countries with a less skilled labor force before they eventually become obsolete this mechanism of technology diffusion which emerges endogenously in our model is consistent with the observation that less developed countries typically get access to new technologies later 3 moreover if there is a positive feedback between the level of technology used in a country and the rate of human capital accumulation countries long term productivity levels become history dependent economies that start out with a low human capital stock initially catch up to the leading countries but never fully converge to the same level figure 1 omitted the key difference between our approach and existing models of persistent tfp differentials is that we do not impose any ex ante restrictions on the ability to transfer technologies or relocate production processes internationally in contrast parente and prescott 1994 explicitly model barriers to technology adoption howitt 2000 assumes that while researchers have access to all the technological knowledge available worldwide any technologies that are used in a country must still be developed domestically as a consequence countries that invest more in research and development r d will on average employ more recent technologies and be more productive a very general model of technological spillovers and adoption costs that captures many features of the various approaches discussed in the literature is developed in klenow and rodriguez clare 2005 4 the remainder of this article is laid out as follows section ii discusses the literature relevant to our approach with a focus on motivating our key assumptions and presenting evidence to support the diffusion mechanism implied by our model section iii introduces the general model in section iv we derive and discuss the main results a brief summary is presented in section v together with concluding remarks ii literature overview the degree speed and nature of convergence have been a focus of interest in the growth literature while traditional growth models suggest that countries should converge to a steady state that is dictated by their structural properties a result known as the conditional convergence hypothesis it is understood that a large number of plausible deviations from the standard neoclassical assumptions generate growth models in which outcomes are history dependent

asset bubbles in an overlapping generations model with endogenous labor supply this paper examines the effects of asset bubbles in an overlapping generations model with endogenous labor supply we show analytically that asset bubbles can lead to an expansion in steady state capital investment employment and output under certain conditions

employment and wage effects of privatisation evidence from hungary romania russia and ukraine we use longitudinal methods and universal panel data on 30 000 initially state owned manufacturing firms in four transition economies to estimate the impacts of privatization on employment and wages the results in all four countries consistently reject job losses and they never imply large wage cuts from privatization to either foreign or domestic owners the domestic privatization estimates are close to zero for employment while for wages they are negative but small in magnitude estimated foreign privatization effects are nearly always positive and sometimes large for both outcome variables we find that the negligible consequences of domestic privatization result from effects on scale productivity and costs that are large but offsetting in hungary and romania and from small effects of all types in russia and ukraine the positive employment outcome of foreign ownership results from a substantial scaleexpansion effect that dominates the productivity improvement effect and the positive wage outcome from productivity improvement dominating the cost reduction effect

comparative statics and perfect foresight in infinite horizon economies does a pure exchange economy with an infinite time horizon have determinate perfect foresight equilibria when there is a finite number of infinitely lived agents equilibria are generically determinate this is not true with overlapping generations of finitely lived agents we ask whether the initial conditions together with the requirement of convergence to a steady state locally determine an equilibrium price path in this framework there are many economies with isolated equilibria many with continua of equilibria and many with no equilibria at all with two or more goods in every period not only can the price level be indeterminate but relative prices as well furthermore such indeterminacy can occur whether or not there is fiat money and whether or not the equilibria are pareto efficient this paper considers whether infinite horizon economies have determinate perfect foresight equilibria this question is of crucial importance if instead equilibria are locally indeterminate not only are we unable to make comparative static predictions but the agents in the model are unable to determine the consequences of unanticipated shocks the idea underlying perfect foresight is that agents expectations should be the actual future sequence predicted by the model if the model does not make determinate predictions the concept of perfect foresight is meaningless we consider two extreme cases the first with a finite number of infinitely lived consumers and the second with an infinite number of finitely lived consumers an overlapping generations model both are models of stationary pure exchange economies no production including the storage of goods between periods can occur these models are unrealistic but are the easiest to study extensions of the results of this paper to models with production infinitely lived assets and mixtures of the two types of consumers are presented by muller and woodford 29 when there is a finite number of infinitely lived consumers we argue that equilibria are generically determinate this is because the effective number of equations determining equilibria is not infinite but equal to the number of agents minus one and must determine the marginal utility of income for all but one agent generically near an equilibrium these equations are independent and exactly determine the unknowns when there are infinitely many overlapping generations this reasoning breaks down an infinite number of equations is not necessarily sufficient to determine

determinacy of equilibrium in an overlapping generations model with heterogeneous agents abstract we study the determinacy of perfect foresight equilibrium near a steady state in an overlapping generations model with production and both altruistic and non altruistic agents having distinct utility functions the proportion of each type of consumer is exogenously given our main results show that when there are positive stationary bequests some standard assumptions on preferences and technology rule out local indeterminacy for any positive value of the proportions in the particular case of a separable utility function for altruistic agents we prove that the determinacy property does not depend on the size of the infinite lived altruistic dynasties journal of economic literature classification numbers c62 d91 o21 o41

the dynamics of incentive contracts the paper studies a simple two period principal agent model in which the principal updates the incentive scheme after observing the agent s first period performance the agent has superior information about his ability the principal offers a first period incentive scheme and observes some measure of the agent s first period performance cost or profit which depends on the agent s ability and unobservable first period effort the relationship is entirely run by short term contracts in the second period the principal updates the incentive scheme and the agent is free to accept the new incentive scheme or to quit the strategies are required to be perfect and updating of the principal s beliefs about the agent s ability follows bayes rule the central theme of the paper is that the ratchet effect leads to much pooling in the first period first for any first period incentive scheme there exists no separating equilibrium second when the uncertainty about the agent s ability is small the optimal scheme must involve a large amount of pooling the paper also gives necessary and sufficient conditions for the existence of partition equilibria and looks at the effect of cost uncertainty

understanding the soft budget constraint we propose a clarification of the notion of a soft budget constraint a concept widely used in the analysis of socialist transitional and market economies our interpretation is broad enough to embrace most existing approaches to soft budget constraint phenomena and provides a classification of their causes and consequences in light of this interpretation we then review the theoretical literature on the subject and compare it with those on other dynamic commitment problems in economics

existence uniqueness and stability of equilibrium in an overlapping generations model with productive capital abstract this paper analyzes the existence uniqueness and stability of a steady state equilibrium in an overlapping generations model with productive capital it is shown that for any feasible set of well behaved preferences there exists a production function that satisfies the inada conditions under which the economy experiences global contraction and the steady state equilibrium is characterized by the absence of production and consumption the study establishes a strengthened inada condition which is necessary to preclude global contraction and sufficient conditions for the existence of a unique and globally stable non trivial steady state equilibrium

endogenous fertility and the henry george theorem abstract models of endogenous demographic change deal with population size as an additional object of the welfare analysis in these models the overlapping generations olg model serves as the basic framework in club theory too population size is treated as an endogenous variable in local public goods lpg models the so called henry george theorem which requires local public expenditures to be financed by a 100 tax on aggregate land rent is known as a first order condition for club efficiency the present paper establishes and exploits an isomorphism between steady states of the olg model and allocations of the lpg model the paper revisits samuelson s fallacy concerning his goldenest golden rule and it explores institutional arrangements that sustain the optimum growth of population

czech privatisation 25 years later privatisation is still a hot political topic today and divides economists as well as politicians and the general public the paper aims to capture the czech privatisation in its historical economic and political contexts the first part explains the difference between transitional privatisation and standard privatisation the second part examines the interests in the privatisation process the third part discusses the privatisation methods used in the czech republic the fourth part offers an international comparison

confidence and the real value of money in an overlapping generations economy we demonstrate that stochastic bubbles which have a constant exogenous probability of collapsing may exist in general equilibrium on an intrinsically useless and unbacked asset money this may happen provided that the probability q that the bubble will persist next period is large enough and exceeds a threshold level q which we call the minimum rate of confidence this condition is always violated when the economy without bubble is dynamically efficient it is more likely to be satisfied in dynamically inefficient economies the larger the size of the inefficiency as measured by the excess of the growth rate over the no bubble interest rate we study both exchange and production economies

the productivity effects of privatization longitudinal estimates from hungary romania russia and ukraine this paper estimates the effect of privatization on multifactor productivity using comprehensive panel data on initially state owned manufacturing firms in four economies we exploit the data s longitudinal dimension to control for preprivatization selection and estimate long run impacts the estimates are robust to functional form but sensitive to selection controls our preferred random growth estimates imply positive multifactor productivity effects of 15 percent in romania 8 percent in hungary and 2 percent in ukraine but a 3 percent effect in russia the foreign privatization effect is larger 18 35 percent in all countries positive domestic effects appear immediately in hungary romania and ukraine and continue growing thereafter but emerge only five years after privatization in russia

will you marry me a perspective on the gender gap abstract this paper develops a general equilibrium model of the gender wage gap the difference in earnings is a consequence of a demographic regularity that men tend to marry younger women which may limit women s labor mobility and hence their average earnings however couples are always free not to marry and do so only if it is in each s self interest the intrafamily allocation of resources is determined via non cooperative bargaining this leads to interesting interactions between the game played by husband and wife on the one hand and the competitive environment in which they are immersed on the other the predictions resulting from this model s interplay between locational choice and family bargaining are consistent with the observation that the increasing stress put by women on their careers over the past 30 years has been contemporaneous with reductions in both marriage rates and the gender gap the model provides insight into the consequences of this for the relative welfare of men and women as well as exploring its wider economic implications

could prometheus be bound again a contribution to the convergence controversy abstract this paper presents a neoclassical model of stochastic growth in which the probability of adverse shocks to production is inversely related to the aggregate stock of capital per capita postulating this endogenous relationship justified by empirical evidence the model yields predictions that are largely consistent with the recent findings of cross country club convergence differently from the standard explanation based on multiplicity of steady states this model is also able to yield predictions consistent with observable intra distribution dynamics thus accounting for phenomena such as economic miracles growth disasters and reversals of fortune

terms of trade and current account dynamics a methodological critique this paper suggests that the recent intertemporal studies concerning the implications of terms of trade deterioration on the current account of a small open economy may suffer from significant methodological deficiencies the study demonstrates that while the assumption of a small open economy represents a legitimate modeling simplification the analysis of the impact of perturbation of the terms of trade on the current account of this small open economy is methodologically erroneous in particular the paper demonstrates that a given pattern of terms of trade deterioration may be associated with opposing evolutionary patterns of the current account of this small economy this paper argues that the methodology employed by several influential intertemporal studies concerning the relationship between the terms of trade and the current account of a small economy suffers from critical deficiencies it demonstrates that while the assumption of a small open economy confronting exogenously determined terms of trade represents a legitimate modeling simplification the analysis of the impact of perturbations of this terms of trade on the small open economy and on its current account is methodologically erroneous in particular the paper demonstrates that a small economy may experience diametrically opposing evolutionary patterns of the current account in association with a given pattern of terms of trade deterioration the paper suggests therefore that predictions based on this literature are in need of reassessment these intertemporal studies of the relationship between the terms of trade and the current account of a small economy have been conducted under the simplifying assumption that perturbations in the terms of trade are exogenous and do not affect the world interest rate 2 this approach may reflect a valid simplification as long as the study is concerned with exportable goods whose prices are insignificant in the determination of the general price level in the world economy however if the focus of the analysis is a small country that exports a group of commodities such as agricultural goods or industrial goods a change in the terms of trade for the small economy may reflect fundamental changes in the world relative prices that are

a family production overlapping generations economy abstract this paper provides a theoretical analysis of an overlapping generations economy in which production decisions and input output allocations are all carried out at the family level i consider a single class of output allocation schemes and various degrees of knowledge about the production technology under complete knowledge i show that a family organizational structure in which everyone receives his marginal contribution to output invests less in physical capital than under a perfectly competitive equilibrium environment under incomplete knowledge i analyze and compare how beliefs about the input output relationship affect the physical capital accumulation dynamics and the long run standards of living

indeterminacy in dynamic models when diamond meets ramsey abstract we consider an aggregate two periods overlapping generations model with endogenous labor consumption in both periods of life homothetic preferences and productive external effects coming from the average capital and labor we show that under realistic calibrations of the parameters in particular a large enough share of first period consumption over the wage income local indeterminacy of equilibria cannot occur with capital externalities alone it can nevertheless occur when there are only even very small vanishing labor externalities provided that the elasticity of capital labor substitution and the wage elasticity of the labor supply are large enough we also show that if labor externalities are slightly stronger but still small enough to be plausible and the elasticity of labor supply is larger local indeterminacy occurs in a cobb douglas economy finally we show that a locally indeterminate steady state is generically characterized by an under accumulation of capital it follows therefore that while agents live over a finite number of periods the conditions for the existence of locally indeterminate equilibria are very similar to those obtained within infinite horizon models and that from this point of view diamond meets ramsey

economic reform and dynamic political constraints in this paper we examine the impact of political constraints on economic reform plans with special reference to the transition from centrally planned to market economies we analyse the problem of an agenda setting reform minded government facing a bureaucracy or industrial sector for which allocative efficiency requires redundancies and an increase in work intensity the government also tries to minimize the rents conceded to its heterogeneous workforce we examine two types of political constraints unanimity rule and majority rule both in a one period and a two period horizon the main results are the following first of all we show how adverse selection and time consistency may generate the widely observed feature of gradualism as an ingredient of an optimal reform second under a majority rule it is shown to be possible for the government to obtain a majority vote for a reform scheme that intertemporally hurts majority interests indeed the government can improve rent extraction through the strategic use of the threat of future proposals the group which expects to be in the minority tomorrow may accept concessions while its votes can be used to extract rents from another group these results suggest that in a dynamic context democratic constraints should not be overestimated as an obstacle against efficiency enhancing economic reforms the results of this paper may throw some light on the political economy of current reforms in eastern europe governments and political decision makers in general always face political constraints when elaborating reform proposals they know that the need to overcome potential opposition from various groups of the population constrains proposals for change political constraints vary depending on the specific institutional structure of society and are clearly different under a military dictatorship than under a parliamentary democracy the role of political constraints seems particularly important in eastern europe today where new democratic governments face the huge task of achieving the transition to a market economy while the introduction of democracy may have removed some important obstacles to economic change namely the veto power of a powerful nomenclatura under communist one party rule fears are expressed that it could potentially jeopardize economic reforms which may during the transition period hurt a majority of the population what can economic theory tell us about optimal economic reform under political constraints this paper starts addressing this ambitious question by looking at structural reform focusing on a restructuring of economic sectors which requires massive redundancies and a significant rise in labour productivity our model illustrates the case of planning

national debt savings and real interest rates in a neoclassical model with endogenous labour supply and knowledge based growth in this paper the interest rate effect of government deficit financing in neoclassical model with endogenous labour supply and knowledge based growth is examined it is shown that government deficits do not raise interest rates if consumption and leisure are good substitutes and there is a large spillover effect in knowledge creation jel classification e13 e60 h60 dette nationale epargnes et taux d interet reels dans un modele neo classique ou la croissance est fondcle sur la connaissance et l offre de travail endogmne ce memoire examine les effets sur le taux d interet du financement d un deficit gouvernemental dans un modele neo classique ou la croissance est fondee sur la connaissance et l offre de travail endogene on montre que les d6ficits gouvernementaux ne font pas croitre les taux d interet si la consommation et le loisir sont des biens substituts et qu il y a des effets extemes importants qui decoulent de la production de la connaissance

intergenerational altruism and the environment we construct an overlapping generations model of pollution externality in which individuals are altruistically linked to their offspring as in barro 1974 it is shown that steady state consumption may be a decreasing function of the intergenerational degree of altruism despite individuals altruism the competitive equilibrium is not optimal we thus study the social optimum and show that it can be decentralized

enterprise performance and management turnover in the czech republic abstract we study the effect of management turnover on changes in enterprise performance using a cross section of 706 czech firms over the 1993 1997 period controlling for initial conditions equity holdings by managers and firm and sector specific effects we find that the appointment of new managers is associated with improvements in profit margins and labor productivity particularly if those managers were selected by private owners the results highlight the importance of human capital in transition economies in bringing about improvements in corporate performance

legality and market reform in soviet type economies the classical soviet type system operates in the virtual absence of economic legality which is a prerequisite to a successful transition to a market economy in the soviet union and the nations of eastern europe in the absence of economic legality the leadership of these countries will not be able to implement a credible commitment to private property rights or any other effective market incentive mechanism in addition they will be unable to promote the growth of multilateral impersonal trade without legality a shift away from central planning toward market allocation may very likely lead to economic decline inflationary pressures and a polarization in income distribution which in turn could unleash political reaction against the reform process in general

aspirations habit formation and bequest motive we analyze how the presence of endogenous preferences affects the altruistic bequest motive from parents to children we will show that the existence of habits raises the threshold value of the intergenerational discount factor above which altruistic bequests are positive while aspiration formation could push this value down therefore the dynamic inefficiency of the economy with no altruism is not sufficient to prevent the bequest motive from being operative under aspiration formation we also discuss the implications of public debt when the bequest motive is inoperative and preferences exhibit habit and aspiration formation

long term substitutability between environmental and man made goods abstract substitutability between environmental and man made goods plays a major role in the sustainability debate the notion of substitutability covers a continuous spectrum with perfect substitutability at one end and poor substitutability at the other in this paper it is shown that if economic growth sustains a sharp distinction emerges between perfect and poor substitutability without any intermediate interpretation of substitutability if poor substitutability prevails environmental resources will eventually constitute the major part of total consumption value we relate our results to baumol s disease and assess the implications of this phenomenon for the compensation of environmental losses

technological breakthroughs and development traps abstract this paper attempts to explain why countries which maintain identical economic conditions at different points in time do not necessarily enjoy a similar path of output growth thereafter the paper develops a simple model where timing is a significant element of economic growth the analysis indicates that despite the fact that the steady state equilibrium in a leading country is unique equilibrium in a country that lags behind may be path dependent a technological progress in the advanced country presents a choice of technology in the following country that affects its dynamic evolution and may trap the economy in a lower steady state equilibrium

safe debt risky capital the author extends the diamond 1965 model of national debt in two directions she first introduces technological uncertainty and then she allows the stock of debt to vary the author studies the dynamical equilibria of the resulting stochastic system and she establishes conditions for the existence of stationary states that are expressed in terms of invariant distributions since conditions that ensure the existence of a stochastic stationary state with positive debt are very restrictive in this model financial instability is a pervasive phenomenon and allocations are in general dynamically inefficient copyright 1994 by the london school of economics and political science