environmental regulation and u s economic growth in this article we quantify the costs of pollution controls by reporting the results of simulations of the growth of the u s economy with and without regulation for this purpose we have constructed a detailed model of the economy that includes the determinants of long term growth we have also analyzed the interaction between industries in order to capture the full repercussions of environmental regulations however we have not attempted to assess the benefits resulting from a cleaner environment we find that pollution abatement has emerged as a major claimant on the resources of the u s economy the cost of emission controls is more than 10 of the total cost of government purchases of goods and services

highway induced development evidence from sri lanka summary when transport investments are made in relatively infrastructure poor newly industrializing regions the consequences extend beyond growth effects to some transformational changes this paper empirically estimates the direction and the magnitude of some of the consequent transformational changes induced via a highway project in sri lanka these changes were estimated at the firm and household level via a series of production function and multivariate analyses in light of the observed results it is likely that traditional impact studies by failing to incorporate transformational shifts i e working under the assumption of a non changing economic structure significantly underestimate project benefits and costs

environmental investment and policy with distortionary taxes and endogenous growth abstract recent studies consider public r d spending that affects abatement knowledge and endogenous growth distortionary taxes that affect capital formation pollution taxes that affect environmental degradation and regeneration that restores natural capital our model combines all those elements the combination affects prior results focusing on two parameters the need for distorting taxes and productivity of abatement knowledge relative to pollution first these two extensions can reverse prior findings that pollution tax revenue is always enough to pay for public r d second tax distortions and externalities alter prior findings that the ratio of public to private capital depends only on output elasticities third dynamics affect prior static findings about other public spending crowding out environmental public goods fourth a greater need for public spending can lead to greater increases in distorting taxes or pollution taxes fifth greater environmental regulation can mean growth is higher or lower even if welfare is higher

optimal taxation in models of endogenous growth we study the problem of optimal taxation in three infinite horizon representative agent endogenous growth models the first model is a convex model in which physical and human capital are perfectly symmetric our second model incorporates elastic labor supply through a lucas style technology analysis of these two models points out the danger of assuming that government expenditures are exogenous in our third model we include government expenditures as a productive input in capital formation showing that the limiting tax rate on capital is no longer zero in numerical simulations we find similar effects on growth and welfare in all three models

aggregate production functions interregional equilibrium and the measurement of infrastructure productivity abstract recent studies examined the role of public goods in aggregate production functions with a variety of results but the relationship between public goods and aggregate output depends on a complex set of price effects which are absent from aggregate production function analyses these cannot generally uncover the role of public goods in production even costless increases in public goods that are productive for individual firms will not always result in higher equilibrium output further increases in public goods that have zero marginal productivities will increase aggregate output under very plausible conditions a simple example demonstrates the quantitative importance of the results

competitive equilibrium and public investment plans abstract we examine a one sector growth model in which public capital is an external input to private production functions revenues from taxing capital and labor income are used to fund public investments the competitive equilibrium can be obtained by solving an artificial planning problem we prove that there exists a unique competitive equilibrium which can be characterized by euler equations and a transversality condition we then establish the existence of an optimal public investment plan

toward optimal meat consumption external cost from meat consumption raises an issue of possible government mechanisms toward mitigation economic theory provides a framework for determining the optimal set of mechanisms considering the associated benefits and costs such a theoretical development rests on consumers responsiveness to alternative mechanisms considering two mechanisms a pigouvian tax and green label education yields tandem theoretical optimal government mechanisms populating this theoretical model with empirically derived elasticities and other parameters provides an application results indicate education alone will likely not yield a high social optimal level of mitigation instead if external costs warrant government mechanisms a pigouvian tax will be required to move consumption toward a socially optimal state

taking stock a critical assessment of recent research on inventories empirical and theoretical aspects of inventory behavior became hot topics in the 1950s and early 1960s no one seemed to notice the tension that was developing between the emerging macroeconomic and microeconomic views of inventories macroeconomists routinely thought of inventories as a destabilizing factor yet the prevailing micro theory viewed inventories as a stabilizing factor it was a fascinating question that was barely explored instead somewhat inexplicably interest in inventories dried up as if inventories were of minor economic significance and little intrinsic interest by the early 1980s then economists once again knew something they had known in the 1950s that inventory investment is of first order importance in business cycles but they were also beginning to realize that the standard production smoothing buffer stock model of inventories was in deep trouble this paper focuses on developments since that realization

is pay as you drive insurance a better way to reduce gasoline than gasoline taxes gasoline taxes are widely perceived as the most efficient instrument for reducing gasoline consumption because they exploit all behavioral responses for reducing fuel use including reduced driving and improved fuel economy at present however higher fuel taxes are viewed as a political nonstarter pay as you drive payd auto insurance which involves replacing existing lump sum premiums with premiums that vary in proportion to miles driven should be more practical since they do not raise driving costs for the average motorist we show that when impacts on a broad range of motor vehicle externalities are considered payd also induces significantly higher welfare gains than comparable gasoline tax increases for fuel reductions below 9 the reason is that under payd all of the reduction in fuel use rather than just a fraction comes from reduced driving this produces a substantial additional efficiency gain because mileage related external costs especially congestion and accidents are relatively large in magnitude this abstract was borrowed from another version of this item

further evidence of the relevance of the dual labor market hypothesis for the u k this study proposes that the earnings of career employees are influenced by a different set of parameters from the earnings of non career employees the above proposition is tested by using a matched employer employee sample within the econometric

analysis of a two sector model of endogenous growth with capital income taxation this paper addresses a two sector model of endogenous growth in which one sector produces final goods and the other produces new human capital both sectors employ human as well as physical capital under constant returns to scale technologies unlike existing studies of this type of model that have mostly concentrated on steady state analysis or on numerical simulations of calibrated models this paper presents an analytical argument concerning the dynamic behavior of the growth path and the effects of capital income taxation in and out of the steady growth equilibrium it is demonstrated that the dynamic behavior of the economy and some policy effects depend heavily upon the magnitude of factor intensity used in each production sector copyright 1996 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

effects of carbon taxes in an economy with prior tax distortions an intertemporal general equilibrium analysis abstract this paper analyzes the costs of carbon taxes in a model that recognizes interactions between this tax and pre existing taxes first we examine the extent to which costs of a u s carbon tax are reduced when its revenues finance cuts in income taxes such use of revenues significantly reduces but does not eliminate the overall policy costs the positive overall costs reflect the carbon tax s focus on intermediate inputs and its relatively narrow base in comparison with income taxes we also examine the sensitivity of the carbon tax s costs to the level of pre existing taxes for any given use of revenues welfare costs rise significantly with pre existing tax rates indicating that models disregarding pre existing taxes may substantially understate the costs of new environmental tax initiatives

intertemporal output and employment effects of public infrastructure capital evidence from 12 oecd economies this paper utilises an intertemporal optimisation framework to study the effects of public infrastructure capital on output supply and input demands in 12 oecd countries we find that in all 12 countries i public capital has positive long run effects on both output supply and input demands ii its mean short run rates of return are fairly low while the corresponding long run rates are much higher but declining over time these findings underscore important under investment gaps in infrastructure during the 1970s and 1980s these gaps however narrowed down significantly in a few cases completely by the early 1990s

the influence of socioeconomic background on the earnings of young men using the panel study of income dynamics we test the proposition that interaction between education and socioeconomic status ses has a negative impact on earnings contrary to findings by papanicolaou and psacharopoulos for the united kingdom no

overlapping generations or infinitely lived agents intergenerational altruism and the economics of global warming do we need an overlapping generations model for the economics of global warming to answer this question an infinitely lived agent ila approach and an overlapping generations olg model are contrasted ila and olg can be viewed as polar representations of intergenerational altruism with ila an immortal agent acts through his investment savings decisions as trustee on the behalf of the future generations with olg agents need not behave altruistic they simply save during working years and dissave completely during retirement nevertheless ila and olg must not differ in their implication for greenhouse policy greenhouse gas abatement is a straightforward alternative to physical capital formation and even without altruism each age cohort has an incentive to provide current abatement in order to reduce future damages attributable to climate change indeed under reasonable assumptions and parameter values our simulations reveal such an invariance result provided carbon taxes are the only policy tool and tax revenues are recycled through socially mandated rules projections of economic growth climate change and energy consumption are only insignificantly affected by the choice of approach

roads to prosperity assessing the link between public capital and productivity does the positive correlation between infrastructure and productivity reflect causation if so in which direction the author finds that when growth in roads the largest component of infrastructure changes productivity growth changes disproportionately in u s industries with more vehicles that vehicle intensive industries benefit more from road building suggests that roads are productive at the margin however road investments do not appear unusually productive intuitively the interstate system was highly productive but a second one would not be road building thus explains much of the productivity slowdown through a one time unrepeatable productivity boost in the 1950s and 1960s

firm inventory behavior and the returns from highway infrastructure investments abstract the debate in public and macro economics over the returns from infrastructure spending has largely ignored transportation economics which has documented substantial inefficiencies created by highway policy and motivated researchers to explain how infrastructure spending produces economic benefits this paper develops a theoretical argument that highway infrastructure investments generate benefits by lowering firms inventories and provides empirical estimates of returns based on this mechanism we find that annual returns from highway investments have fallen to less than 5 percent during the 1980s and 1990s and suggest that a partial explanation may be the rising cost of inefficient transportation infrastructure policy

public sector capital and the productivity puzzle a number of studies have suggested a quantitatively important relationship between public sector capital accumulation and private sector productivity with the most compelling evidence derived from analyses of state level data estimates herein of production functions that use standard techniques to control for unobserved state specific characteristics however reveal essentially no role for public sector capital in affecting private sector productivity only estimates of state production functions that do not include such controls find substantial productivity impacts this result reconciles existing econometric estimates with the findings of hulten and schwab based on growth accounting techniques as such techniques effectively control for state specific effects region level estimates are essentially identical to those from state data suggesting no quantitatively important spillover effects across states copyright 1994 by mit press

environmental levies and distortionary taxation pigou taxation and pollution i note an important distinction between the optimal price of environmental quality in a second best world and the optimal level of environmental quality using an analytical general equilibrium model i show that for reasonable parameter values an increase in tax distortions arising from an increase in required tax revenues leads to a fall in the optimal pigouvian tax rate even while environmental quality improves in general knowledge of the direction of changes in optimal environmental tax rates due to changes in the economy is not sufficient for understanding the impact on environmental quality 2003 elsevier science b v all rights reserved

is public expenditure productive abstract this paper considers the relationship between aggregate productivity and stock and flow government spending variables the empirical results indicate that i the nonmilitary public capital stock is dramatically more important in determining productivity than is either the flow of nonmilitary or military spending ii military capital bears little relation to productivity and iii a core infrastructure of streets highways airports mass transit sewers water systems etc has most explanatory power for productivity the paper also suggests an important role for the net public capital stock in the productivity slowdown of the last fifteen years

socioeconomic background schooling experience and monetary rewards in the united states using a selective sample from the 1977 panel study of income dynamics the authors investigate the relations among schooling job experience socioeconomic status ses iq and earnings in the united states in contrast to the results for the united kingdom reported by john papanicolaou and george psacharopoulos we find no interaction effect on earnings between schooling and ses a positive interaction effect on earnings however is found between experience and ses introducing iq in the analysis leaves the above mentioned results unchanged it is argued that differences between the u s and the u k might be due to cultural and labor market factors copyright 1986 by the review of economic studies limited

what is the optimal speed limit on freeways abstract when choosing his speed a driver faces a trade off between private benefits time savings and private costs fuel cost and own damage and injury driving faster also has external costs pollution adverse health impacts and injury to other drivers this paper uses large scale speed limit increases in the western united states in 1987 and 1996 to address three related questions first do the social benefits of raising speed limits exceed the social costs second do the private benefits of driving faster exceed the private costs third what is the optimal speed limit i find that a 10 mph speed limit increase on highways leads to a 3 4 mph increase in travel speed 9 15 more accidents 34 60 more fatal accidents and elevated pollutant concentrations of 14 24 carbon monoxide 8 15 nitrogen oxides 1 11 ozone and 9 higher fetal death rates around the affected freeways using these estimates i find that the social costs of speed limit increases are two to seven times larger than the social benefits in contrast many individual drivers would enjoy a net private benefit from driving faster privately a value of a statistical life vsl of 6 0 million or less justifies driving faster but the social planner s vsl could be at most 0 9 2 0 million to justify higher speed limits i conclude that the optimal speed limit was lower but not much lower than 55 mph

automobile externalities and policies this paper discusses the nature and magnitude of externalities associated with automobile use including local and global pollution oil dependence traffic congestion and traffic accidents it then discusses current federal policies affecting these externalities including fuel taxes fuel economy and emissions standards and alternative fuel policies summarizing insofar as possible the welfare effects of those policies finally we discuss emerging pricing policies including congestion tolls and insurance reform and summarize the appropriate combination of policies to address automobile externalities

optimal growth with renewable resources and pollution abstract this paper presents three models which combine the optimal dynamics of economic growth renewable resource harvesting and pollution we investigate growth pollution and renewable resources as a three state variable problem the economy has three inputs man made capital renewable resources and emissions endogenous pollution affects both the growth of the renewable resource stock and the social welfare it is shown that the existence of the steady state depends in a complicated manner and in addition to preferences on the production technology growth of the renewable resource and the rate of decay of pollution the sufficient conditions for the existence of a global saddle point are given conditions under which the market solution equals the optimal solution of the social planner and the consequences of a too low externality tax on emissions or on common property resource harvesting are discussed

corporate trade credit and inventories new evidence of a trade off from accounts payable and receivable abstract trade credit is an important source of finance for firms and has been well researched but the focus has been on financial trade offs in this paper we consider the trade offs with inventories and develop a simple model that recognizes the incentives a firm faces to offer and receive trade credit our model identifies the response of accounts payable and accounts receivable to changes in the cost of inventories profitability risk and liquidity and importantly this influence operates through a production channel our results support the model and complement many existing studies focused on explaining the financial terms of trade credit