pollution as a source of endogenous fluctuations and periodic welfare inequality in olg economies this article examines the conditions under which endogenous fluctuations and periodic welfare inequality can emerge in olg economies having an environmental dimension

assessing income population and technology impacts on co2 emissions in canada where s the ekc abstract this study investigates the macroeconomic forces underlying carbon dioxide co2 emissions from fossil fuel use in canada in keeping with the relevant literature on environmental degradation three forces are expected to influence co2 emissions gross domestic product per capita gdp capita population and technological change while previous work has employed reduced form models that allow for non linear relationships between co2 and gdp capita it has been common practice to assume linear relationships between co2 and the latter two variables this study tests a more flexible model using a five region panel data set in canada over the period 1970 2000 findings indicate that gdp capita is unrelated to co2 that an inverted u shaped relationship exists with population and that a u shaped relationship exists with technology thus technological and population changes are supported over the commonly hypothesized environmental kuznets curve an inverted u shaped relationship between gdp capita and environmental degradation for affecting co2 emissions from fossil fuel use in canada

sustainability policy and environmental policy a theoretical representative agent economy with a depletable resource stock polluting emissions and productive capital is used to contrast environmental policy which internalises externalised environmental values with sustainability policy which achieves some form of intergenerational equity the obvious environmental policy comprises an emissions tax and a resource stock subsidy each equal to the respective external cost or benefit sustainability policy comprises an incentive affecting the choice between consumption and investment and can be a consumption tax capital subsidy or investment subsidy or a combination thereof environmental policy can reduce the strength of the sustainability policy needed more specialised results are derived in a small open economy with no environmental effects on utility

unequal vulnerability to climate change and the transmission of adverse effects through international trade in this paper we consider the unequal distribution of climate change damages in the world and we examine how the underlying costs can spread from a vulnerable to a non vulnerable country through international trade to focus on such indirect effects we treat this topic in a north south trade overlapping generations model in which the south is vulnerable to the damages entailed by global pollution while the north is not we show that the impact of climate change in the south can be a source of welfare loss for northern consumers in both the short and the long run in the long run an increase in the south s vulnerability can reduce the welfare in the north economy even in the case in which it improves its terms of trade in the short run the south s vulnerability can also represent a source of intergenerational inequity in the north therefore we emphasize the strong economic incentives for non vulnerable and a fortiori less vulnerable economies to reduce the climate change damages on more vulnerable countries

technological vs ecological switch and the environmental kuznets curve we consider an optimal technology adoption ak model in line with boucekkine krawczyk and vallee 2011 an economy caring about consumption and pollution as well starts with a given technological regime and may decide to switch at any moment to a cleaner technology at a given permanent or transitory output cost at the same time we posit that there exists a pollution threshold above which the assimilation capacity of nature goes down featuring a kind of irreversible ecological regime we study how ecological irreversibility interacts with the ingredients of the latter optimal technological switch problem with a special attention to induced capital pollution relationship we find that if a single technological switch is optimal one recovers the environmental kuznets curve provided initial pollution is high enough if exceeding the ecological threshold is optimal then the latter configuration is far from being the rule

co2 emissions and income dynamics what does the global evidence tell us this paper analyzes the co evolution of two major determinants of social welfare namely income and carbon emissions in particular by using a distribution dynamics approach based on markov chains we investigate the shape and behavior of the joint distribution of per capita income and carbon dioxide emissions we arrive at several interesting conclusions especially in the context of international negotiations on climate change first evidence does not support theoretical models predicting the existence of a poverty environment trap specifically in the long run two main groups of countries will emerge poor versus polluting countries second the typical development path leads initially to high emission levels and subsequently to high income third the convergence process towards the stationary distribution is very slow finally for carbon emissions whenever it is observed the environmental kuznets curve seems to be only a transitory phenomenon

avoiding an ecological regime shift is sound economic policy we extend the shallow lake model by adding the capital stock of an industry a government can mitigate the effects of pollution arising from industrial activities by imposing the requirement to abate emissions within this framework two scenarios are examined in the social optimal benchmark the social planner optimally allocates investment in the competitive equilibrium market forces determine the investment in capital but the government can still abate emissions we find that irreversible environmental regime shifts are avoided in the competitive equilibrium by means of a static level of abatement when it is socially optimal to do so

the effect of food stamps on labor supply a bivariate selection model abstract although there is a large literature on the effects of u s transfer programs on labor supply this is the first such study of the food stamp program we model the nonlinearity and nonconvexity of the budget constraint and use maximum likelihood methods to estimate hours of work functions for female heads of household the largest recipient group in the program we also model the joint response to afdc and food stamps and we account for the existence of a significant number of eligible households who do not participate in the programs a three equation bivariate selection model is estimated on a sample of eligible households with maximum likelihood

the cost of pollution on longevity welfare and economic stability this paper presents an overlapping generations model where pollution private and public health expenditures are all determinants of longevity public expenditures financed through labour taxation provide both public health and abatement we study the role of these three components of longevity on welfare and economic stability at the steady state we show that an appropriate fiscal policy may enhance welfare however when pollution is heavily harmful for longevity the economy might experience aggregate instability or endogenous cycles nonetheless a fiscal policy which raises the share of public spending devoted to health may display stabilizing virtues and rule out cycles this allows us to recommend the design of the public policy that may comply with the dynamic and welfare objectives

pollution private investment in healthcare and environmental policy in this paper we demonstrate that in a two period overlapping generations model the relationship between environmental taxation and economic activity output level and growth has an inverted u shape when we take into account the detrimental impact of pollution on health and the individual decision of each working age agent to improve her health we also demonstrate that the link between environmental tax and lifetime welfare also has an inverted u shape and that a tighter environmental policy might enhance economic activity while reducing steady state lifetime welfare finally we investigate the social optimum and the determinants of the optimal environmental tax

nonconvexities in optimal pollution accumulation abstract with a few exceptions the analysis of optimal pollution accumulation or detrimental stock externalities rests on the assumptions that the level of damage is unbounded and that pollution decay increases monotonically with the level of pollution stock we show that these assumptions are restrictive and that their generalization alters the basic economic properties of optimal pollution control we specify a decay function which is concave with low stock levels and convex when pollution is higher we show that although multiple steady states may exist the globally optimal solution may be independent of the initial pollution level it is also possible that there are cutoff levels which determine the optimal long run equilibrium implying that the feedback control law is discontinuous and nonmonotonic bounded damage may have similar implications but in contrast to concave convex decay they may occur even with zero discounting

learning by doing and the introduction of new goods a dynamic general equilibrium model is developed in which goods are valued according to the characteristics they contain the set of goods produced in any period is endogenously determined and learning by doing is the force behind sustained growth it is shown that the set of produced goods changes in a systematic way over time with goods of higher quality entering each period and those of lower quality dropping out the model is then used to study the effect of introducing a traditional sector in which there is no learning

the vaccination kuznets curve do vaccination rates rise and fall with income abstract this paper presents a new stylized fact about the relationship between income and childhood vaccination it shows vaccination rates first rise but then fall as income increases this pattern is observed in who country level panel data and in us county level panel and individual level repeated cross section data this data pattern suggests that both low and high income parents are less likely to follow the standard vaccination schedule and that such behavior is reflected in the vaccination rate at the population level i provide several alternative explanations as to why we observe this data pattern including avoidance measures medical care and social segregation

industrial pollution in economic development the environmental kuznets curve revisited abstract using new international data this paper tests the environmental kuznets curve ekc hypothesis for industrial water pollution we measure the effect of income growth on three determinants of pollution the share of industry in national output the share of polluting sectors in industrial output and end of pipe eop pollution intensities per unit of output in the polluting sectors we find that the industry share of national output follows a kuznets type trajectory but the other two determinants do not when combined our results imply rejection of the ekc hypothesis for industrial water pollution it rises rapidly through middle income status and remains roughly constant thereafter

on optimal non linear taxation and public good provision in an overlapping generations economy abstract using the self selection approach to tax analysis within an olg framework the paper examines optimal non linear labour and capital income taxation and the provision of a durable public good under endogenous wages the marginal tax rules depend on the influence of the tax instruments on self selection and on the income earning abilities of the households in particular we found that production inefficiency occurs in the model justifying capital income taxation for the public good the paper derives a dynamic analogue of the second best samuelson rule encompassing both inter and intragenerational redistributive considerations furthermore the usual conditions guaranteeing the efficiency of the first best samuelson rule are not sufficient in the present model

welfare transfers in two parent families labor supply and welfare participation under afdc up this paper examines the effect of cash transfers and food stamp benefits on family labor supply and welfare participation among two parent families the aid to families with dependent children unemployed parent program has provided cash benefits to two parent households since 1961 despite recent expansions little is known about the program s effect on labor supply and welfare participation i develop a model of family labor supply in which hours of work for the husband and wife are chosen to maximize family utility subject to a family budget constraint accounting for afdc up benefits and other tax and transfer programs the husband s and wife s labor supply decisions are restricted to no work part time work and full time work maximum likelihood techniques are used to estimate parameters of the underlying hours of work and welfare participation equations the estimates are used to determine the magnitude of the work disincentive effects of the afdc up program and to simulate the effects of changes in afdc up benefit and eligibility rules on family labor supply and welfare participation the results suggest that labor supply and welfare participation among two parent families are highly responsive to changes in the benefit structure under the afdc up program

do individual preferences explain the environmental kuznets curve abstract some economists maintain the optimistic view that individual preferences of rich people eventually lead to a virtuous circle relationship between rising income and environmental degradation in this article i review some of the models that establish a relationship between individual preferences and environmental quality these models provide a basis for discussion of the key role played by two factors individual preferences and technology they do not however capture the distributive conflicts that occur between different social groups in the process of defining environmental policy neither do they provide a good basis for distinguishing between environmental costs caused by the decisions of particular consumers and those which affect the same consumers this point is related to the various manners in which environmental costs are displaced displacement often occurs within a country for current costs and is even clearer and more relevant when costs are transferred across a great distance or to a remote future in such cases there are few incentives to reduce consumption or alter its composition displacement moreover can become a strategy pursued more or less consciously for maintaining high and rising levels of consumption without dealing with the associated environmental costs

the political economy of environmental taxes with an aging population this paper develops a two period overlapping generations model with environmental externalities and uncertain lifetimes and studies how two sources of population aging greater longevity and a lower rate of population growth affect the politically determined environmental tax and the quality of the environment it is shown that greater longevity and a lower rate of population growth have entirely different effects on these factors greater longevity has no effect on the environmental tax and has a non positive effect on the environmental quality whereas a lower rate of population growth has a negative effect on the tax and has a positive effect on the quality in addition the political decision making on the tax leads to an inefficient allocation of capital and environmental quality

international trade and environmental quality a survey abstract international trade has been incorporating various aspects of environmental issues since 1970 the extent to which environmental problems might affect many facets of trade or vice versa has been the subject of considerable debate over these years in this article we have attempted to establish some of the links between international trade and environmental quality by performing a comprehensive literature review we discuss issues such as establishing direct and indirect effects of international trade on environmental quality effects of trade on economic development environmental quality and energy and their relation with each other and finally the role of governments and international organizations in this context studies have so far revealed some linkages between trade and environment through conventional trade theory however interactions between international trade and types of pollution their sink and assimilative capacity need to be analyzed using a general equilibrium approach currently very little knowledge and agreement on the nature of interactions between trade theories development process and environmental quality exist existing studies have shown that the structure of environmental regulations should be modified to reflect the existence of trade under imperfect competition therefore further research on the interaction between new trade theory and environmental regulation is needed also theoretical and quantitative analysis regarding the effects of environmental regulations on competitiveness and location decision is needed the intensity and type of environmental measures vary across issues and countries therefore harmonizing environmental measures creates an inefficient atmosphere and to assume that trade restrictions will either improve or reverse the environmental damages is a serious mistake given the dynamic and intricate nature of the problem trade and environment debate continues despite vast research and poses a challenge for researchers and policy makers in the foreseeable future

optimal tax rules and public sector efficiency with an externality in an overlapping generations model abstract this paper examines optimal tax rules and public sector efficiency integrating them in a second best world with pollution by using an overlapping generations model the second best world is characterized by the comparative statics of green preferences the main results obtained are as follows first the marginal cost of public funds may be reduced by the externalities regardless of the choice of taxes second optimal environmental and non environmental tax rules are additively and directly affected by the dynamic efficiency of capital accumulation per unit labour decal and indirectly by it through the efficiency of the public sector environmental taxes going beyond pigovian ones may be welfare improving if the decal is improved by the environmental tax even optimal non environmental tax rules should additively and directly counter the dynamics of pollution to consider the income effects of the optimal tax system for the future third the additivity property or the principle of targeting does not hold even in the absence of incentive compatibility constraints the essential reasons for this are clarified as follows distortions that should be countered by taxes that is the income effects of the optimal tax system and the decal in this model break the equality between optimal environmental taxes and the externalities measured by governments finally growing environmental concerns may in fact increase pollution the inverse relationship between environmental and labour income taxes may not hold

confronting the environmental kuznets curve t he environmental kuznets curve posits an inverted u relationship between pollution and economic development kuznets s name was apparently attached to the curve by grossman and krueger 1993 who noted its resemblance to kuznets s inverted u relationship between income inequality and development in the first stage of industrialization pollution in the environmental kuznets curve world grows rapidly because people are more interested in jobs and income than clean air and water communities are too poor to pay for abatement and environmental regulation is correspondingly weak the balance shifts as income rises leading industrial sectors become cleaner people value the environment more highly and regulatory institutions become more effective along the curve pollution levels off in the middle income range and then falls toward pre industrial levels in wealthy societies the environmental kuznets curve model has elicited conflicting reactions from researchers and policymakers applied econometricians have generally accepted the basic tenets of the model and focused on measuring its parameters their regressions typically fitted to cross sectional observations across countries or regions suggest that air and water pollution increase with development until per capita income reaches a range of 5000 to 8000 when income rises beyond that level pollution starts to decline as shown in the conventional ekc line in figure 1 in developing countries some policymakers have interpreted such results as conveying a message about priorities grow first then clean up numerous critics have challenged the conventional environmental kuznets curve both as a representation of what actually happens in the development process and as a policy prescription some pessimistic critics argue that crosssectional evidence for the environmental kuznets curve is nothing more than a

the impact of economic growth on co2 emissions in azerbaijan abstract this paper investigates the relationship between the economic growth and co2 emissions in azerbaijan a cointegration analysis is conducted over the period 1992 2013 for getting more robust results johansen ardlbt dols fmols and ccr methods are employed to explore cointegration and estimate long run coefficients we use cubic quadratic and linear specifications and conclude that the last one is an adequate representation for the impact of the economic growth on co2 emissions in azerbaijan the results from the different cointegration methods are consistent with each other and show that the economic growth has a positive and statistically significant impact on the emissions in the long run implying that the ekc hypothesis does not hold for azerbaijan the income elasticity of co2 emissions using different methods is found to be between 0 7 and 0 8 moreover we find that any short run imbalance can be adjusted towards the long run equilibrium path within less than one year the paper concludes that measures to increase energy efficiency carbon pricing instruments in production and international domestic trade activities and nationwide social awareness programs to instruct about the negative consequences of pollution can be considered as relevant environmental policies aimed at reducing carbon emissions

the instability of the adjusted and unadjusted environmental kuznets curves abstract we test the stability of the unadjusted and adjusted environmental kuznets curves ekcs our results provide evidence in favour of a theoretically funded adjusted ekc hypothesis in which the impact of per capita gdp on co 2 emissions is evaluated conditionally to the effects of the industry mix and of the energy supply infrastructure in this specification the shape of the gdp co 2 relationship appears quite sensitive to changes in the estimation period in the final part of the paper signs and dynamics of fixed effects of individual countries in different specifications are interpreted as measures of virtuous or vicious of environmental behaviour

social contracts as assets a possible solution to the time consistency problem this paper presents a new solution to the time consistency problem that appears capable of enforcing ex ante policy in a variety of settings in which other enforcement mechanisms do not work the solution involves formulating a social contract institution or agreement that specifies the optimal ex ante policy the social contract is effectively sold by succesive old generations to successive young generations who pay for the social contract through the payment of taxes both old and young generations have an economic incentive to fulfill the social contract for the old generation breaking the social contract makes the social contract valueless and the generation suffers a capital loss by not being able to sell it for the young generation the economic advantage of purchasing the existing social contract exceeds its price as well as the economic gain from setting up the a new social contract

increasing returns and animal spirits the purpose of this note is to simply point out that the multiplicity intrinsic of course to the presence of non convexities characterizes the models of growth with external increasing returns which have been studied recently and more importantly to show that the many competitive equilibria which often arise in those models can be interpreted as animal spirits equilibria that is equilibria indexed by the consumers optimism or pessimism this multiplicity of competitive equilibrium paths can be viewed as providing a new foundation upon which to build a theory of self fulfilling prophecies one which relies solely on the existence of external effects and does not rest on the overlapping generation structure or on back ward bending offer curves the conclusion that multiple animal spirits competitive equilibria are likely to arise in a model of external increasing returns would survive the generalization of the framework used in this paper to many period environments be they overlapping generation or representative agent infinite horizon structures this abstract was borrowed from another version of this item

transboundary externalities in the environmental transition hypothesis the environmental kuznets curve ekc is a hypothesis which implies that it is possible to grow out of environmental degradation most theoretical models of the ekc relation have not accounted for transboundary and intergenerational externalities nor have empirical studies provided evidence that validates an inverted u shaped relation between environmental degradation and economic growth for pollution problems where the effects are far displaced or are long delayed

on the intergenerational allocation of natural resources it is known hartwick and others that under standard assumptions a society that invests in reproducible capital the competitive rents on its current extraction of exhaustible resources will enjoy a consumption stream constant in time it is shown here that this result can be interpreted as saying that an appropriately defined stock of capital including the initial endowment of resources is being maintained intact and that consumption can be interpreted as the interest on that patrimony this seems like a useful rule of thumb for policy

the political economy of environmental policy with overlapping generations a two sector overlapping generations model illuminates the intergenerational effects of a tax that protects an environmental stock a traded asset capitalizes the economic returns to future tax induced environmental improvements benefiting the current asset owners the old generation absent a transfer the tax harms the young generation by decreasing their real wage future generations benefit from the tax induced improvement in environmental stock the principal intergenerational conflict arising from the tax is between generations alive at the time society imposes the policy not between generations alive at different times a pareto improving tax can be implemented under various political economy settings

the impact of state economic differentials on household welfare and labor force behavior abstract this paper calculates state specific income expectations for low income households using a simultaneous model of household labor force and welfare participation decisions a variety of simulations indicate the interlocking effects of existing state differences in welfare wages and taxes on work welfare choices and income significant differences among similar households in different states occur equalization of welfare benefits eliminates some but not all of these differences but generates potentially serious policy problems for the states

a consumption based theory of the environmental kuznets curve abstract most theories about the inverted u relationship between pollution and income termed the environmental kuznets curve ekc are production side theories emphasizing pollution and abatement technologies production side theories are implicitly based on the assumption of low factor mobility and the absence of pollution as a variable in the utility function both assumptions are called into question by the empirical evidence of ekcs for i pollutants that are long lived and not easily shiftable and ii regional cross sections with free labor mobility hazardous waste sites are a prime example this paper develops a stylized model of the ekc based on perfect mobility of households and labor it represents the first attempt at developing a consumption side model of the ekc

the environmental kuznets curve under a new framework the role of social capital in water pollution we advance a case for including social capital in an environmental kuznets curve analysis using highly disaggregated data of water pollution in louisiana we create a social capital index and employ parametric and spatial panel regression models to explain water pollution dynamics

an economic model of welfare stigma perhaps the most basic assumption of the economic theory of consumer demand is that more is better than less virtually all of the major propositions of consumer theory can in a certain sense be derived from the assumption that goods are good interestingly however this tenet seems to be violated by the behavior of many individuals in the low income population for many turn out to be eligible for a positive welfare benefit but do not in fact join the welfare rolls for example it has been estimated that in 1970 only about 69 percent of the families eligible for afdc aid to families with dependent children participated in the program see richard michel 1980 the corresponding percentage for afdc u the program for which families with an unemployed male are eligible was only 43 percent and the participation rate in the food stamp program was only 38 percent see maurice mcdonald 1977 this phenomenon has puzzled many investigators because such individuals do not locate on the boundaries of their budget sets consequently most investigators ignore the problem when studying the effects of welfare programs on behavior in this paper this seemingly irrational rejection of an increase in income is modeled as resulting from welfare stigma that is from disutility arising from participation in a welfare program per se 1 the existence of stigma has been amply documented in the sociological literature patrick horan and patricia austin 1974 lee rainwater 1979 where interviews of recipients have often uncovered feelings of lack of self respect and negative self characterizations from participation in welfare nevertheless this phenomenon has not been modeled and many questions consequently remain when is the disutility of participation strong enough to prevent participation shouldn t we expect individuals to weigh the disutility of participation against the potential benefit in their decisions what is the elasticity of participation with respect to the potential benefit also in a slightly different vein how are the work disincentives of welfare affected by stigma these questions have been given scant attention by economists yet they are crucial for our ability to predict the impact of various welfare programs on the lowincome population here these questions are addressed by modeling nonparticipation as a utility maximizing decision the model is developed and estimated for the afdc program 2 the model posits an individual utility function containing not just disposable income but

natural disasters in a two sector model of endogenous growth using an endogenous growth model with physical and human capital accumulation this paper considers the sustainability of economic growth when the use of a polluting input e g fossil fuels intensifies the risk of capital destruction through natural disasters we find that growth is sustainable only if the tax rate on the polluting input increases over time the long term rate of economic growth follows an inverted v shaped curve relative to the growth rate of the environmental tax and it is maximized by the least aggressive tax policy of those that asymptotically eliminate the use of polluting inputs unavailability of insurance can accelerate or decelerate the growth maximizing speed of the tax increase depending on the relative significance of the risk premium and precautionary savings effects welfare is maximized under a milder environmental tax policy especially when the pollutants accumulate gradually

economic development and the energy intensity of human well being evidence from the gcc countries abstract this paper empirically investigates the effect of economic development on the energy intensity of human well being eiwb in the gulf cooperation council gcc during the period 1995 2012 we employ a time series cross sectional prais winsten regression model with panel corrected standard errors pcse we conclude that economic development has had a significant positive impact on eiwb during the period 1995 2012 the results indicate that the stress on the environment had increased in a noticeable manner from 1995 until 2006 however over the period 2007 2012 the stress went back to the level observed in 1995 this observation is unfortunate from the perspective sustainable economics

the natalist bias of pollution control for a given technology two ways are available to achieve low polluting emissions reducing production per capita or reducing population size this paper insists on the tension between the former and the latter controlling pollution either through pigovian taxes or through tradable quotas schemes encourages agents to shift away from production to tax free activities such as procreation and leisure this natalist bias will deteriorate the environment further entailing the need to impose ever more stringent pollution rights per person however this will in turn gradually impoverish the successive generations population will tend to increase further and production per capita to decrease as the generations pass one possible solution consists in capping population too

finite lifetimes and growth abstract in this paper we study the long run growth property of overlapping generations models it is shown that in one sector models with convex technologies the asymptotic growth rate must be zero this results because the young do not have sufficient income to purchase a large capital stock thus a policy of income redistribution to the young can generate growth even if financed by income taxation additionaly it is shown that two sector models and one sector models with nonconvex technologies are consistent with growth

economic models for the environmental kuznets curve a survey abstract the environmental kuznets curve ekc refers to an inverted u shaped relationship between some pollutant level and per capita income i e the environmental quality deteriorates at early stages of economic growth and subsequently improves at a later stage since the early 1990s a considerable number of empirical studies have been conducted on the ekc and although there is no conclusive proof it has been recognized that the ekc emerges as an empirical regularity however some recent studies cast doubt on the concept and methodology of empirical results and evidence of the existence of the ekc has been questioned in fact how economic growth affects the environmental quality i e the shape of the ekc is still controversial in order to identify the actual relationship between the environmental quality and economic growth it is essential to develop economic models from various points of view this paper overviews the current stage of theoretical models that explain such relationship

chandlerism in post war europe strategic and structural change in france germany and the uk 1950 1993 this paper examines the chandlerian model of corporate development in the light of new data on the strategies and structures of large european firms in the post war period conglomerate strategies continue to spread but these are typically less stable than strategies of related diversification the divisional structure now predominates in europe suppressing more indigenous forms the paper discusses implications both for economic arguments around the resource based view of the firm and for institutionalist arguments around the spread of american management ideas the paper concludes that chandler s original model is remarkably robust to both change over time and differences across countries copyright 1999 by oxford university press

sustainable growth and the environmental kuznets curve abstract this paper develops an endogenous growth model with pollution and both human and physical capital human capital is produced cleanly and physical capital can be used for pollution control economic growth is sustainable in the long run it is optimal for human capital to grow more rapidly than physical capital output and consumption while pollution declines for realistic parameter values our results differ sharply from stokey s result for an ak technology that sustained economic growth is not optimal the model can generate an environmental kuznets curve a pollution tax or a voucher system can implement the pareto efficiency solution

economic growth and greenhouse gas emissions abstract recent empirical research has examined the relationship between certain indicators of environmental degradation and income concluding that in some cases an inverted u shaped relationship which has been called an environmental kuznets curve ekc exists between these variables unfortunately this inverted u shaped relationship does not hold for greenhouse gas emissions one explanation of the absence of ekc like behavior in greenhouse gas emissions is that greenhouse gases are special pollutants that create global not local disutility but the international nature of global warming is not the only reason that prevents de linking greenhouse gas emissions from economic growth the intergenerational nature of the negative impact of greenhouse gas emissions may have also been an important factor preventing the implementation of greenhouse gas abatement measures in the past in this paper we explore the effect that the presence of intergenerational spillovers has on the emissions income relationship we use a numerically calibrated overlapping generations model of climate economy interactions we conclude that 1 the intertemporal responsibility of the regulatory agency 2 the institutional capacity to make intergenerational transfers and 3 the presence of intergenerationally lagged impact of emissions constitute important determinants of the relationship between economic growth and greenhouse gas emissions

public policy and health insurance choices of the elderly evidence from the medicare buy in program this study provides evidence on health insurance decisions of senior citizens nearly all senior citizens have health insurance coverage through medicare but poor seniors may also qualify for medicaid that fills many gaps in medicare coverage since 1987 the medicaid program has expanded eligibility using the sipp i find that medicaid eligibility increased from 8 7 in 1987 to 12 4 in 1995 for every 100 elderly who became eligible approximately 50 took up medicaid but more than 30 dropped private coverage resulting in crowd out of 60 crowd out came from individuals dropping privately purchased health insurance rather than dropping employer provided retiree health insurance the roles of asset tests health status and the panel structure of the sipp are also explored i find that a major strength of the sipp is in its point in time asset information for determining medicaid eligibility while the changing income and demographic information over the course of the 2 year panel adds little insight beyond cross sectional data 2000 elsevier science s a all rights reserved

smooth transition pollution income paths abstract we explore the idea of regime switching as a new methodological approach in the analysis of the emission income relationship the basic idea is that when some threshold is passed the economy could move smoothly to another regime with the emission income relationship being different between the old and the new regime the methodology is applied to a panel dataset of us state level sulfur dioxide and nitrogen oxide emissions sulfur dioxide emissions are found to smoothly peak at a relatively late stage of economic development and then smoothly decrease at high levels of income however for the nitrogen oxide emissions environmental pressure tends to rise with economic growth then slows down but does not decline with further growth

competitive equilibria and sustainable growth in a life cycle model with natural resources the purpose of this note is to consider interactions between capital accumulation and natural resource exploitation in diamond s 1965 overlapping generations olg model the presumption in the literature on economic growth under resource constraints e g solow 1974 or stiglitz 1974 is that constant standards of living are possible in the presence of nonreproducible natural resources even in the absence of technical progress provided only that capital and resources are good substitutes in production and society makes sufficient investments in reproducible capital to offset the optimally declining stock of natural resources this literature ignores generation overlap and treats society in each period as a single generation which cares about and also discounts the welfare of its immediate descendants and which has complete control over the rate of resource use and the saving rate whether a sequence of selfish finite lived and interdependent generations interacting via competitive markets will implement these paths is an open question this note introduces a stationary population log linear version of diamond s model in which natural resources are selfreproducible and essential in production and capital depreciates completely after one period in this environment it is technically feasible to achieve growth paths in which the input and the stock of natural resources are constant and in which capital accumulation leads to growth in living standards these paths of resource use can be interpreted as emanating from the normative concept of sustainable development now advocated

modelling the take up of means tested benefits the case of housing benefits in the united kingdom official estimates of housing benefit take up rates suggest that up to two million families in the united kingdom ma y not be receiving the help with their housing costs to which they ar e entitled the authors interest in the take up of means tested bene fits is therefore motivated by two concerns the first is the governm ent revenue implications of a change to benefit entitlement levels t he second relates to the welfare of individuals who fail to claim the ir entitlement to benefit in this paper the authors investigate the relationship between the take up of means tested housing benefit in dividual socioeconomic characteristics and the level of entitlement copyright 1987 by royal economic society

a theory of intergenerational clubs intertemporal pareto efficient conditions for provision and maintenance of the shared good tolls membership size and financing are presented for intergenerational clubs an optimal membership span is also determined for nonlifetime members these pareto efficient conditions account for atemporal crowding intertemporal depreciation due to utilization and the sequence of members adequate incentives exist for privately owned clubs to act with foresight but do not necessarily exist for government owned clubs nevertheless privately owned clubs must be operated by a firm rather than the members if free rider problems regarding maintenance are to be avoided

international and intergenerational environmental externalities we examine a world in which policymakers actions in a given country at a given time have long lived effects on a common resource the global environment we consider the first best in which long lived planners behave cooperatively then examine the allocation of resources when there is non cooperation across countries across time or both finally we analyze the dynamic behavior of the economy along balanced growth paths it is found that while long lived international institutions are necessary to internalize all externalities cooperation at a point in time may be harmful to future generations

optimal tax schemes and the environmental externality abstract this paper analyzes optimal tax schemes in an overlapping generations model with the environment which deteriorated by the consumption to achieve the optimal allocation two sorts of consumption tax schemes are analyzed in addition we examine another tax scheme with the maintenance subsidy

the consequences of a one sided externality in a dynamic two agent framework abstract we develop a dynamic model where all agents contribute to a global externality but only those in a specific region suffer from it we model this in a dynamic setting via a two agent non cooperative overlapping generations model and analyze the consequences for economic growth and intertemporal choices we find that multiple steady states may result from this asymmetry in particular if the agent who is affected by the externality has to spend a large share of his income to offset it then he may be stuck in an environmental poverty trap we provide conditions for the existence of and local convergence to the equilibria as well as a condition for the global convergence to the poverty trap while in addition to maintenance expenditures externalities tend to be addressed via studying taxes investment in r d or alike we focus on capital market integration specifically agents in the affected region can open up their capital market to enable capital inflows we investigate whether an open capital market improves or worsens their welfare while we do find that capital market integration eliminates the environmental poverty trap we show that capital market integration is not always in both agents interest in particular we provide conditions under which the agents prefer autarkic or integrated capital markets

the trade off between intra and intergenerational equity in climate policy abstract this paper focuses on two equity dimensions of climate policy intra and intergenerational and analyzes the implications of equity preferences on climate policy and on the production and consumption patterns in rich and poor countries we develop a dynamic two region model in which each region suffers from global warming but also has an inequality aversion over current consumption allocations inequality aversion generally lifts the consumption path of the poor region while the rich region must take a greater share of the climate burden furthermore with inequality aversion the optimal climate policy generally leads to higher investment in clean capital in the north and in dirty capital in the south thereby allowing the south to pollute more and develop faster the optimal policy may even require the poor region to increase emissions relative to the uncoordinated business as usual case introducing local pollution and transfers confirm the main results

the effects of emission permits on growth and the environment we develop an overlapping generations model of growth and the environment in which industrial firms produce environmentally harmful emissions a government controls the emissions by assigning emission quotas to firms and permits could be issued and freely traded as financial instruments across firms on the basis of the quotas we show that an environmental policy that decreases an aggregate number of emission quotas could degenerate economic growth and lower environmental quality in the long run we also show the implications of this result for environmental policy

allocating environmental water and impact on basin unemployment role of a diversified economy abstract water diversion for environmental purposes threatens many agricultural communities this paper focuses on the water agriculture environment nexus in the murrumbidgee river basin australia and attempts to explain how reduced water allocation to agriculture aimed at protecting the environment in turn impacted the wider economy and the community predictably reduced water allocation saw declines in agriculture production and employment despite this paradoxically the basin unemployment rate declined and basin median household income increased to understand and interpret this we first analyze available labour economic and hydrology data and then develop a simple dynamic model to interpret the observed pattern of basin employment and unemployment data analysis revealed the likely causes behind the paradox as a out migration of people from the basin and b absorption of the labour force in the fast growing non agricultural sectors of the diversified basin economy the model simulations reinforced this interpretation further model simulations under alternative realities of out migration and sectoral transformation indicated that basins embedded in faster growing national economies and are more diversified to begin with are likely to be more conducive to agriculture sector reform e g reduced water allocation and environmental regeneration this is a sobering message for other regions experiencing environmental degradation due to extensive agricultural development

economic growth inequality democratization and the environment we augment the stokey 1998 model by allowing agents to differ with respect to environ mental quality and income in order to analyze the impact of income and environmental inequality and of democratization on aggregate pollution we find that the impact of a more equal income distribution depends on the degree of democracy in a complete democracy a more equal income distribution generates ceteris paribus less pollution which is consistent with indirect empirical evidence whereas the opposite is the case if democratic rights are highly restricted furthermore a democratization is argued to typically lower both the income and the environmental quality of the median voter in this case if in utility terms the fall in environmental quality is worse than the fall in consumption the median voter decides to tighten environmental legislation so that aggregate pollution decreases

total factor productivity and the environmental kuznets curve abstract empirical studies support the environmental kuznets curve hypothesis ekc for some pollutants as income increases pollution increases reaches a peak and eventually decreases while relying mostly on cross sectional data the interpretations assert that the ekc is a by product of economic growth over time in doing so and in neglecting the role of important country specific characteristics these studies overlook potential econometric problems and introduce policy misconceptions differences in total factor productivity tfps account for much of the variation in income across countries with important implications for environmental quality we develop a theoretical model where different tfps produce a cross sectional ekc even if the dynamic path of environmental quality to its steady state in individual countries suggest otherwise the cross sectional ekc depends on diminishing returns to scale in environmental protection on the curvatures of the utility function with respect to consumption and of the environmental protection function and the elasticities of steady state consumption and environmental expenditures with respect to variation in tfps

the environmental kuznets curve and the structural change hypothesis we provide a very simple macroeconomic investigation of the role that structural changes might play in generating inverted u shaped income pollution relationships differently from previous research which mainly focuses on empirical static or general equilibrium models we develop a standard balanced growth path bgp analysis we show that along the bgp equilibrium an inverted u shaped income pollution relationship may occur as a response to structural changes but whether this is the case or not it will crucially depend upon the magnitude of a production externality parameter moreover we show that the negative relationship between income and pollution can only be a transitory phenomenon and in the long run pollution will increase as income rises generating overall an n shaped pattern

learning by doing and the costs of a backstop for energy transition and sustainability we assess the impact of being able to substitute an unlimited but costly energy substitute like wind solar for a non renewable resource like oil coal in a model of sustainable growth the prospects for sustainability on the optimal path depend crucially on the costs of this substitute furthermore the poorer a country measured in terms of capital stock at a given point in time the later it should switch to the renewable substitute and the more likely it will be unsustainable taking learning by doing in account we find that this leads to an earlier switching time but does not guarantee sustainability

life expectancy and the environment we present an olg model in which life expectancy and environmental quality dynamics are jointly determined agents may invest in environmental care depending on how much they expect to live in turn environmental conditions affect life expectancy as a result our model produces a positive correlation between longevity and environmental quality both in the long run and along the transition path eventually multiple equilibria may also arise some countries might be caught in a low life expectancy low environmental quality trap this outcome is consistent with stylized facts relating life expectancy and environmental performance measures we also discuss the welfare and policy implications of the inter generational externalities generated by individual choices finally we show that our results are robust to the introduction of growth dynamics based on physical or human capital accumulation c 2009 elsevier b v all rights reserved

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

labour supply impacts of effective welfare programme parameters a reanalysis we quantify the impact of effective welfare programme parameters on the labour supply of single female household heads the primary group of welfare recipients in the usa our panel of data is derived from the us census bureau s current population survey for the years 1979 to 1990 inclusive behavioural impacts from a range of economic variables are consistent in sign with predictions made by economic theory we find that effective welfare gurantee levels and the effective tax rate on earned income both significantly decrease labour supply the marginal effects of these welfare programme parameters are economically small a us 1000 increase in the expected welfare guarantee level reduces annual labour supply by about 36 hours a 10 percentage point increase in the effective tax rate on earned income reduces annual labour supply by about 7 5 hours

a dynamic model of the environmental kuznets curve turning point and public policy we set up a simple dynamic macroeconomic model with i polluting consumption and a preference for a clean environment ii increasing returns in abatement giving rise to an ekc and iii sustained growth resulting from a linear final output technology there are two sorts of market failures caused by external effects associated with consumption and environmental effort the model is employed to investigate the determinants of the turning point and the cost effectiveness of different public policies aimed at a reduction of the environmental burden moreover the model offers a potential explanation of an n shaped pollution income relation it is shown that the model is compatible with most empirical regularities on economic growth and the environment

the effects of local labour market conditions on welfare programme participation a fractional imputation method is applied to iowa administrative data to deal with a problem of missing data the effects of local labour market conditions and mobility of household heads on family investment program fip participation are evaluated results show that mobility increases the opportunity for employment and decreases the fip participation rate for low income families an increase in predicted unemployment rates decreases labour force participation and increases programme participation an increase in unpredicted unemployment rates increases labour force participation and decreases programme participation overall the effects are relatively larger in rural areas than in nonrural areas in iowa

effects of using specific versus general data in social program research we present a comparison of results of similar analyses of a particular social program using two sources of data one representative of the general population and one representative of the population that actually is eligible for the social program to do this we focus on a particular public assistance program as implemented in florida as our public policy program of choice we compare the results of an analysis of the program s participation rates using us census data for the general population of florida to the results of the exact same model using a dataset that includes only the population of florida that is actually eligible for the program we find that while generally signs of effects remain the same they do not always remain the same moreover significance differs and the marginal effects of various demographic and socio economic factors on program participation rates vary greatly we submit that such differences are important for policymakers to recognize so that they can effectively target p

an overlapping generations model of growth and the environment this article analyzes the potential conflict between economic growth and the maintenance of environmental quality in an overlapping generations model short lived individuals make decisions which have long lasting effects on both factor productivity and the environment the model provides a theoretical explanation of observed correlations between environmental quality and income whereby economic growth is associated first with declines then improvements in environmental quality it suggests circumstances in which multiple pareto ranked steady state equilibria may arise and in which sustained growth of both capital and environmental quality may occur overmaintenance of the environment analogous to dynamically inefficient overaccumulation of capital may emerge copyright 1994 by royal economic society

from regressive pollution taxes to progressive environmental tax reforms european countries have increased their use of environmental tax instruments by designing new tax bases but many countries face opposition from public opinion for fear of the distributive consequences of these environmental tax reforms this paper sheds light on the distributive consequences of environmental tax policies when households are heterogeneous the objective is to assess whether an environmental tax reform could be pareto improving when the revenue of the pollution tax is recycled by a change in labor tax properties we show that whatever the degree of regressivity of the environmental tax alone it is possible to design a recycling mechanism that renders the tax reform more pareto efficient by simultaneously decreasing the wage tax and increasing its progressivity

intergenerational resource rights efficiency and social optimality the discipline of economics is generally defined as the science of the allocation of scarce resources between competing social objectives given an initial distribution of resources between economic agents how would they behave so as to improve their welfare according to the pareto criterion the agents would exchange commodities until the opportunities for fruitful exchange were fully exhausted and no agent could be made better off without rendering at least one other agent worse off pareto efficiency is a powerful concept in microeconomic analysis provided that the initial distribution of property rights is equitable allocative efficiency gives rise to the best of all possible worlds acknowledging that the assumptions of perfect competition are often violated firms are monopolistic information is incomplete and externalities exist economists have argued for the modification of institutions so that economic reality will conform more closely to the assumptions of the model that yields such gratifying results but microeconomic theory has always maintained that allocative efficiency is in itself insufficient to maximize social welfare bator 1957 a social welfare function is required to discriminate a social optimum among the array of efficient allocations that correspond to alternative assignments of property rights though economists have posited alternative functional forms for the sake of pursuing conceptual arguments welfare functions have remained elusive constructs for well known theoretical and practical reasons consequently a sharp line of demarcation has been drawn between questions of efficiency the province of economics and equity the principal focus of ethical and political discourse in resource economics however the line demarcating efficiency and equity is often crossed the term optimal depletion appears regularly where only efficient depletion is meant while political debates about resource exploitation over time are laden with questions of the proper distribution of our natural patrimony between generations resource economists have predominantly espoused particular use rules that guarantee efficiency but overlook potential improvements in social welfare achievable through the reassignment of property rights across generations we document the evolution and current status of the misuse of the term optimal depletion in section ii we develop a simple two generation three period general equilibrium model in section iii to illustrate how alternative distributions of resource rights between generations relate to alternative pareto efficient solutions in section iv we demonstrate how different social welfare functions affect the optimal solution and associated assignment of resource rights between generations

when do women use aid to families with dependent children and food stamps the dynamics of eligibility versus participation this paper investigates dynamic patterns in the relationship between eligibility and participation in the aid to families with dependent children afdc and food stamp programs using monthly longitudinal data from the survey of income and program participation the results indicate that there are many relatively short eligibility spells that do not result in program participation and end with increases in income participation is most likely to occur among women with lower current and future earnings opportunities and is affected by locational and policy parameters those who elect to participate in these programs tend to start receiving benefits almost immediately upon becoming eligible a substantial number of women exit these programs before their eligibility ends among at least some of these women it is likely that unreported changes in income are occurring in 1989 if all eligible single parent families had participated in afdc and food stamps benefit payments in these programs would have been 13 5 billion higher

self enforcing intergenerational social contracts for pareto improving pollution mitigation we consider in an overlapping generations model with an environmental externality a scheme of contracts between any two successive generations under each contract agents of the young generation invest a share of their labor income in pollution mitigation in exchange for a transfer in the second period of their lives the transfer is financed in a pay as you go manner by the next young generation different from previous work we assume that the transfer is granted as a subsidy to capital income rather than lump sum we show that the existence of a contract which is pareto improving over the situation without contract for any two generations requires a sufficiently high level of income in a steady state with social contracts in each period the pollution stock is lower compared to a steady state without contracts analytical and numerical analysis of the dynamics under nash bargaining suggests that under reasonable conditions also steady state income and welfare are higher delaying the implementation of a social contract for too long or imposing a contract with too low mitigation can be costly net income may inevitably fall below the threshold in finite time so that pareto improving mitigation is no longer possible and the economy converges to a steady state with high pollution stock and low income and welfare in the second part of the paper we study a game theoretic setup taking into account that credibly committing to a contract might not be possible we show that with transfers granted as a subsidy to capital income there exist mitigation transfer schemes which are both pareto improving and give no generation an incentive to deviate from any of its contracts even in a dynamically efficient economy social contracts coexist with private savings