a dynamic approach to the measurement of waste in an open economy abstract the paper develops a methodology for evaluating the cost of distortions within the production sector of a small open growing economy quadratic approximations to the loss of output are developed the main new result is that the dynamic loss due to distortions generally exceeds the discounted sum of static type losses due to distortions at least to the second order another new result derives a quadratic approximation to the output loss that can be calculated using information on the size of the distortions and on producer substitution matrices evaluated at an observed distorted equilibrium rather than at a hypothetical undistorted equilibrium

the tale of the tails canadian income inequality in the 1980s and 1990s we present new evidence on levels and trends in after tax income inequality in canada between 1980 and 2000 we argue that existing data sources may miss changes in the tails of the income distribution and that many of the changes in the income distribution have been in the tails for this reason we turn to an alternative source in particular we construct data on after tax and transfer income using census files augmented with predicted taxes based on information available from administrative tax data using these data we find that canadian after tax inequality levels are substantially higher than has been previously recognized primarily because income levels are lower at the bottom of the distribution than in commonly used survey data we also find larger long term increases in after tax income inequality and far more variability over the economic cycle this raises interesting questions about the role of the tax and transfer system in mitigating both trends and fluctuations in market income inequality les auteurs presentent de nouveaux resultats sur les niveaux et tendances de l inegalite des revenus apres impots au canada entre 1980 et 2000 on suggere que les donnees existantes peuvent avoir ignore des changements dans les extremites de cette distribution alors que le gros des changements y etait concentre pour cette raison les auteurs se sont tournes vers une autre source de donnees ils ont construit une base de donnees sur les revenus apres impots et les paiements de transfert en utilisant les donnees du recensement ainsi que des donnees additionnelles sur les impots prevus a partir de renseignements disponibles dans les dossiers administratifs on decouvre que les niveaux d inegalite des revenus apres impots sont beaucoup plus eleves que ce qu on a suggere jusqu ici d abord parce que les niveaux de revenus sont plus bas au pied de la distribution que ne le suggerent les donnees d enquetes on decouvre aussi un accroissement plus grand a long terme de l inegalite des revenus apres impots et une plus grande variabilite au cours du cycle economique voila qui souleve des questions interessantes a propos du role de la fiscalite et du systeme de paiements de transfert dans la modulation de la tendance et des fluctuations dans l inegalite des revenus du marche

using elasticities to derive optimal income tax rates this paper derives optimal income tax formulas using compensated and uncompensated elasticities of earnings with respect to tax rates a simple formula for the high income optimal tax rate is obtained as a function of these elasticities and the thickness of the top tail of the income distribution in the general non linear income tax problem this method using elasticities shows precisely how the different economic effects come into play and which are the key relevant parameters in the optimal income tax formulas of mirrlees the optimal non linear tax rate formulas are expressed in terms of elasticities and the shape of the income distribution these formulas are implemented numerically using empirical earning distributions and a range of realistic elasticity parameters

statistical inference for aggregates of farrell type efficiencies in this study we merge results of two recent directions in efficiency analysis research aggregation and bootstrap applied as an example to one of the most popular point estimators of individual efficiency the data envelopment analysis dea estimator a natural context of the methodology developed here is a study of efficiency of a particular economic system e g an industry as a whole or a comparison of efficiencies of distinct groups within such a system e g regulated vs non regulated firms or private vs public firms our methodology is justified by the neoclassical economic theory and is supported by carefully adapted statistical methods copyright 2007 john wiley sons ltd

central limit theorems for aggregate efficiency applied researchers in the field of efficiency and productivity analysis often need to estimate and make inference about aggregate efficiency such as industry efficiency or aggregate efficiency of a group of distinct firms within an industry e g public versus private firms regulated versus unregulated firms etc while there are approaches to obtain point estimates for such important measures no asymptotic theory has been derived for it this is the gap in the literature we fill with this paper specifically we develop full asymptotic theory for aggregate efficiency measures when the individual true efficiency scores being aggregated are observed as well as when they are unobserved and estimated via the data envelopment analysis or the free disposal hull as a result the developed theory opens a path for more accurate and theoretically better grounded statistical inference e g estimation of confidence intervals and conducting statistical tests on aggregate efficiency estimates such as indust

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

comparing malmquist and hicks moorsteen productivity indices exploring the impact of unbalanced vs balanced panel data abstract we explore the effect of balancing unbalanced panel data when estimating primal productivity indices using non parametric frontier estimators first we list a series of pseudo solutions aimed at making an unbalanced panel balanced then we discuss some intermediate solutions e g balancing 2 years by 2 years furthermore we link this problem with a variety of literatures on infeasibilities statistical inference of non parametric frontier estimators and the index theory literature focusing on the dynamics of entry and exit in industries we then empirically illustrate these issues comparing both malmquist and hicks moorsteen productivity indices on two data sets in particular we test for the differences in distribution when comparing balanced and unbalanced results for a given index and when comparing malmquist and hicks moorsteen productivity indices for a given type of data set the latter tests are crucial in answering the question to which extent the malmquist index can approximate the hicks moorsteen index that has a total factor productivity tfp interpretation finally we draw up a list of remaining issues that could benefit from further exploration

determinants of co2 emissions in a small open economy abstract the aim of the paper is to explore the relationship between economic development and carbon dioxide co2 emissions for a small open and industrialized country austria we test whether an environmental kuznets curve relationship also holds for a single country rather than concentrating on panel or cross section data for a set of countries a cubic i e n shaped relationship between gdp and co2 emissions is found to fit the data most appropriately for the period 1960 1999 and a structural break is identified in the mid seventies due to the oil price shock furthermore two variables are additionally significant import shares reflecting the well known pollution haven hypothesis and the share of the tertiary service sector of total production gdp accounting for structural changes in the economy emission projections derived from this single country specification support the widely held opinion that significant policy changes are asked for when implementing the kyoto protocol in order to bring about a downturn in future carbon emissions

estimating labour supply responses using tax reforms the 1980 s tax reforms and the changing dispersion of wages offer one of the best opportunities yet to estimate labor supply effects nevertheless changing sample composition aggregate shocks the changing composition of the tax paying population and discontinuities in the tax system create serious identification and estimation problems we develop grouping estimators that address these issues our results reveal positive and moderately sized wage elasticities we also find negative income effects for women with children

industry performance and structural efficiency measures solutions to problems in firm models abstract it is shown that average unit structural efficiency measures do not measure the level of technical efficiency in a firm model of an industry alternative structural efficiency measures generalized to multiple input and multiple output technologies are presented as a solution to the problem of how to estimate the relative performance of an industry as a whole where reallocation of inputs across firms is not feasible compared to existing measures the proposed measures require additional information therefore the linear programming dea models needed to obtain this information are presented this non parametric approach to relative efficiency measurement is also used to obtain economic efficiency estimates for an industry as a whole without imposing a priori restrictions on the relative input and output weights

the credibility revolution in empirical economics how better research design is taking the con out of econometrics since edward leamer s memorable 1983 paper let s take the con out of econometrics empirical microeconomics has experienced a credibility revolution while leamer s suggested remedy sensitivity analysis has played a role in this we argue that the primary engine driving improvement has been a focus on the quality of empirical research designs the advantages of a good research design are perhaps most easily apparent in research using random assignment we begin with an overview of leamer s 1983 critique and his proposed remedies we then turn to the key factors we see contributing to improved empirical work including the availability of more and better data along with advances in theoretical econometric understanding but especially the fact that research design has moved front and center in much of empirical micro we offer a brief digression into macroeconomics and industrial organization where progress by our lights is less dramatic although there is work in both fields that we find encouraging finally we discuss the view that the design pendulum has swung too far critics of design driven studies argue that in pursuit of clean and credible research designs researchers seek good answers instead of good questions we briefly respond to this concern which worries us little

the measurement of waste within the production sector of an open economy a methodology for measuring the loss of output that can be attributed to distortions within the production sector of an open economy is proposed examples of distortions are tariffs on imported intermediate inputs taxes or subsidies on exports specific taxes on an output that is used as an input by another industry nonneutral corporate income taxes interindustry monopolistic markup pricing and union induced wage differentials the methodology generalizes the earlier work of allais and debreu

aggregation of malmquist productivity indexes allowing for reallocation of resources in this paper we consider aggregate malmquist productivity index measures which allow inputs to be reallocated within the group when in output orientation this merges the single period aggregation results allowing input reallocation of nesterenko and zelenyuk 2007 with the aggregate malmquist productivity index results of zelenyuk 2006 to determine aggregate malmquist productivity indexes that are justified by economic theory consistent with previous aggregation results and which maintain analogous decompositions to the original measures such measures are of direct relevance to firms or countries who have merged making input reallocation possible allowing them to measure potential productivity gains and how these have been realised or not over time

the effect of marginal tax rates on taxable income a panel study of the 1988 tax flattening in canada abstract federal tax reform in 1988 flattened the canadian personal income tax schedule changing the marginal tax rates for many individuals using methods similar to those applied by auten and carroll rev econ 81 4 1999 681 in the study of the effects of the 1986 u s tax reform act we estimate the responsiveness of income to changes in taxes to be substantially smaller in canada however we find evidence of a much higher response in self employment income in the labor income of seniors and from those with high incomes

a cost malmquist productivity index this paper develops a productivity index applicable when producers are cost minimisers and input prices are known the index is inspired by the malmquist index as extended to productivity measurement the index developed here is defined in terms of input cost rather than input quantity distance functions hence productivity change is decomposed into overall efficiency and cost technical change furthermore overall efficiency change is decomposed into technical and allocative efficiency change and cost technical change into a part capturing shifts of input quantities and shifts of relative input prices these decompositions provide a clearer picture of the root sources of productivity change they are illustrated here in a sample of hospitals results are computed using non parametric mathematical programming 2003 elsevier b v all rights reserved

why have the labor force participation rates of older men increased since the mid 1990s this article seeks to explain the substantial increases in older men s labor force participation rates observed since the mid 1990s using data from the united states canada and the united kingdom i exploit the cohort effects driving recent increases in older women s participation rates to identify the effect of a wife s participation decision on her husband s participation decision i then decompose the changes in older married men s participation rates demonstrating that husbands responses to increases in wives participation in the labor force can explain one fourth one half and one third of the increase in the united states canada and the united kingdom respectively

income and emission a panel data based cointegration analysis this paper presents the results of an investigation of the causality issue of incomeemission relationship based on time series econometric techniques of unit root test cointegration and related error correction model for a panel data set here the nature of causality between per capita co2 emission pcco2 and per capita gdp pcgdp has been examined using a cross country panel data set covering 88 countries for the period 1960 90 using the panel unit root test procedure of im et al 1997 ips we have found that the hypothesis of unit root i e non stationarity of the time series of pcgdp and pcco2 can not be rejected for individual country groups as both the variables are found to follow i 1 process we next have performed the panel data co integration test and finally we have estimated the ecm for these country groups for which significant income emission cointegration was obtained to explore the nature of dynamics implicit in the given panel data set our findings suggest that there is more or less a bi directional causal relationship between income pcgdp and co2 emission pcco2 for africa central america america as a whole eastern europe western europe europe as a whole and the world as a whole that means the movement of the one variable directly affects the other variable through a feedback system thus the policy makers should be cautious to make proper decision about the control of emission level

the law of one price in data envelopment analysis restricting weight flexibility across firms abstract the law of one price loop states that all firms face the same prices for their inputs and outputs under market equilibrium taken here as a normative condition for efficiency prices this law has powerful implications for productive efficiency analysis which have remained unexploited thus far this paper shows how loop based weight restrictions can be incorporated in data envelopment analysis dea utilizing the relation between industry level and firm level cost efficiency measures we propose to apply a set of input prices that is common for all firms and that maximizes the cost efficiency of the industry our framework allows for firm specific output weights and for variable returns to scale and preserves the linear programming structure of the standard dea we apply the proposed methodology to the evaluation of the research efficiency of economics departments of dutch universities this application shows that the methodology is computationally tractable for practical efficiency analysis and that it helps in deepening the dea analysis

firm and industry level profit efficiency analysis using absolute and uniform shadow prices we discuss the nonparametric approach to profit efficiency analysis at the firm and industry levels in the absence of complete price information two new insights are developed first we measure profit inefficiency in monetary terms using absolute shadow prices second we evaluate all firms using the same input output prices this allows us to aggregate firm level profit inefficiencies to the overall industry inefficiency besides the measurement of profit losses the presented approach enables one to recover absolute price information from quantity data we conduct a series of monte carlo simulations to study the performance of the proposed approach in controlled production environments

co2 emissions and economic activity heterogeneity across countries and non stationary series this paper explores the relationship between co2 emissions and economic activity for 31 countries 28 oecd brazil china and india during the period 1950 to 2006 using cointegration analysis single country long run relationships are estimated and equality in the functional form the parameters and the turning point when appropriate are rejected this confirms the relevance of considering the differences among countries in the relationship between air pollution and economic activity to avoid wrong estimations and conclusions

cost efficiency measurement with price uncertainty a dea application to bank branch assessments this paper enhances cost efficiency measurement methods to account for different scenarios relating to input price information these consist of situations where prices are known exactly at each decision making unit dmu and situations with incomplete price information the main contribution of this paper consists of the development of a method for the estimation of upper and lower bounds for the cost efficiency ce measure in situations of price uncertainty where only the maximal and minimal bounds of input prices can be estimated for each dmu the bounds of the ce measure are obtained from assessments in the light of the most favourable price scenario optimistic perspective and the least favourable price scenario pessimistic perspective the assessments under price uncertainty are based on extensions to the data envelopment analysis dea model that incorporate weight restrictions of the form of input cone assurance regions the applicability of the models developed is illustrated in the context of the analysis of bank branch performance the results obtained in the case study showed that the dea models can provide robust estimates of cost efficiency even in situations of price uncertainty

top incomes in the long run of history a recent literature has constructed top income shares time series over the long run for more than twenty countries using income tax statistics top incomes represent a small share of the population but a very significant share of total income and total taxes paid hence aggregate economic growth per capita and gini inequality indexes are sensitive to excluding or including top incomes we discuss the estimation methods and issues that arise when constructing top income share series including income definition and comparability over time and across countries tax avoidance and tax evasion we provide a summary of the key empirical findings most countries experience a dramatic drop in top income shares in the first part of the twentieth century in general due to shocks to top capital incomes during the wars and depression shocks top income shares do not recover in the immediate postwar decades however over the last thirty years top income shares have increased substantially in english speaking countries and in india and china but not in continental european countries or japan this increase is due in part to an unprecedented surge in top wage incomes as a result wage income comprises a larger fraction of top incomes than in the past finally we discuss the theoretical and empirical models that have been proposed to account for the facts and the main questions that remain open

empirical study on the environmental kuznets curve for co2 in france the role of nuclear energy this paper attempts to estimate the environmental kuznets curve ekc in the case of france by taking the role of nuclear energy in electricity production into account we adopt the autoregressive distributed lag ardl approach to cointegration as the estimation method additionally we examine the stability of the estimated models and investigate the granger causality relationships between the variables in the system the results from our estimation provide evidence supporting the ekc hypothesis and the estimated models are shown to be stable over the sample period the uni direction running from other variables to co2 emissions are confirmed from the casualty tests specifically the uni directional causality relationship running from nuclear energy to co2 emissions statistically provides evidence on the important role of nuclear energy in reducing co2 emissions

the malmquist total factor productivity index the definitions of the malmquist output and input quantity indexes specified by d w caves l r christensen and w e diewert 1982 are applied in this study based on these indexes a malmquist total factor productivity index is derived for general production structures the definition maintains the fundamental characteristic of a productivity index as a ratio between an output quantity change index and an input quantity change index this index provides a remedy for the shortcoming of the traditional definition of the malmquist productivity index in that the latter does not correctly measure changes in productivity in the presence of changes in returns to scale copyright 1996 by the editors of the scandinavian journal of economics

the integration of child tax credits and welfare evidence from the national child benefit program abstract in 1998 the canadian government introduced a new child tax credit the innovation in the program was its integration with social assistance welfare some provinces agreed to subtract the new federally paid benefits from provincially paid social assistance partially lowering the welfare wall other provinces did not integrate benefits providing a quasi experimental framework for estimation we find large changes in social assistance take up and employment in provinces that provided the labour market incentives to do so in our sample the integration of benefits can account for between 19 and 27 of the decline in social assistance receipt between 1997 and 2000

aggregation of malmquist productivity indexes in this paper we extend the work of fare and zelenyuk 2003 on aggregate farrell efficiency scores european journal of operational research 146 3 615 620 to find a theoretically justified method of aggregating malmquist productivity indexes over individual decision making units firms countries etc into a group malmquist productivity index we also consider the aggregation of decomposed parts of the malmquist productivity index to obtain a decomposition of the malmquist productivity index for a particular group c 2005 elsevier b v all rights reserved

income and co2 emissions evidence from panel unit root and cointegration tests abstract this paper re investigates the stationarity properties of per capita carbon dioxide co 2 emissions and real gross domestic product gdp per capita for 109 countries within seven regional panel sets covering 1971 2003 we apply the recent unit root test of the panel seemingly unrelated regressions augmented dickey fuller suradf test developed by breuer et al 2001 misleading inferences from panel unit root tests with an illustration from purchasing power parity review of international economics 9 482 493 2002 series specific unit root tests with panel data oxford bulletin of economics and statistics 64 527 546 the panel suradf test accounts for the presence of cross country correlations in the data and the parameters in the panel specification vary across countries more importantly this test allows us to identify how many and which members of the panel contain a unit root overall our empirical results illustrate that real gdp and co 2 emissions in these countries are a mixture of i 0 and i 1 processes and that the traditional panel unit root tests could lead to misleading inferences as well as the conduct of cointegration analysis being perhaps inappropriate the results of our analysis carry critical implications for the modeling of co 2 emissions and gdp because of the different orders of integration for the two variables

tax bases tax rates and the elasticity of reported income abstract tax reforms usually change both tax rates and tax bases using a panel of income tax returns spanning the two major u s tax reforms of the 1980s and a number of smaller tax law changes i find that the elasticity of income reported on personal income tax returns depends on the available deductions this highlights that this key behavioral elasticity is not an immutable parameter but rather that it can be to some extent controlled by policy makers one implication is that base broadening reduces the marginal efficiency cost of taxation the results are very similar for all income categories indicating that the rich are more responsive to tax rates because tax rules that apply to them are different their tax base is narrower the point estimates indicate that the tax reform act of 1986 reduced the marginal cost of collecting a dollar of tax revenue with roughly half of this reduction due to the base broadening and the other half due to the tax rate reduction as a by product the analysis in this paper offers a reconciliation of disparate estimates obtained by previous studies of the tax responsiveness of income

pooled mean group estimation of an environmental kuznets curve for co2 abstract we apply the pooled mean group estimator to test for the existence of an environmental kuznets curve for co2 in 22 oecd countries this approach allows for more flexible assumptions in a panel data framework the period goes from 1975 to 1998

income inequality and pollution a reassessment of the environmental kuznets curve abstract improvements in some measures of air and water quality can accompany rising per capita income as illustrated by the so called environmental kuznets curve for pollution variables which show such a relationship we hypothesize that a more equitable distribution of power contributes to these outcomes by enhancing the influence on policy of those who bear the costs of pollution relative to the influence of those who benefit from pollution generating activities an empirical analysis of international variations in seven indicators of air and water quality supports this hypothesis literacy political rights and civil liberties are found to have particularly strong effects on environmental quality in low income countries

productivity growth technical progress and efficiency change in industrialized countries this paper analyzes productivity growth in 17 oecd countries over the period 1979 1988 a nonparametric programming method activity analysis is used to compute malmquist productivity indexes these are decomposed into two component measures namely technical change and efficiency change we find that u s productivity growth is slightly higher than average all of which is due to technical change japan s productivity growth is the highest in the sample with almost half due to efficiency change jel c43 d24 in this paper we apply recently developed