reversing urban bias in african rice markets evidence from senegal summary urban bias constitutes an important institutional impediment to economic development in poor countries some african governments now recognize that they should invest in agricultural productivity in order to reverse urban bias but often forget the equally important objective of investing in quality tailored to consumers so as to reverse urban bias footprint on food markets we conduct framed field experiments in two major urban markets in senegal and find that the majority of urban consumers are willing to pay quality premiums for local rice suggesting that investment in post harvest rice quality is a priority in the reversal of urban bias 2012 elsevier ltd all rights reserved

optimal production and carbon emission reduction level under cap and trade and low carbon subsidy policies abstract in recent years massive carbon emissions have caused serious global environmental damage such as a worsening greenhouse effect and thick haze to curb carbon emissions as well as maintain sustainable economic development governments promote the development of low carbon economy by issuing multiple policies among which the cap and trade policy ctp and low carbon subsidy policy lcsp are widely adopted moreover manufacturers are increasingly adopting carbon emission reduction technology to produce greener products considering related government policies and rising environmental awareness among consumers to give policy making insights to governments as well as production and carbon emission reduction decision making insights to manufacturers this paper investigates the impacts of ctp and lcsp on the production and carbon emission reduction level of a manufacturer and explores which policy is better for society the results show that the carbon emission reduction level increases as the carbon trading price increases whereas it is independent of the unit low carbon subsidy interestingly the carbon trading price does not always have a negative effect on the manufacturer s profit and the cap does not always produce a positive effect on the manufacturer s profit more importantly we find that lcsp is more beneficial to society when the environmental damage coefficient is less than a threshold but otherwise ctp is more beneficial

a quantitative evaluation of payroll tax subsidies for low wage workers an equilibrium search approach abstract phelps phelps e 1994 low wage employment subsidies versus the welfare state american economic review 84 54 58 presented the case for a low wage subsidy policy since the mid 1990s france has experimented with this strategy this paper evaluates the effect of this policy on employment and also on output and welfare we construct an equilibrium search model incorporating wage posting and specific human capital investment where unemployment and the distribution of both wages and productivity are endogenous we estimate this model using french data numerical simulations show that the prevailing minimum wage allows a high production level to be reached by increasing training investment even though the optimal minimum wage is lower we show that payroll tax subsidies enhance welfare more than a reduction in the minimum wage when they are spread over a large range of wages in order to avoid specialization in low productivity jobs

green taxes can we protect the environment and improve the tax system at the same time on a cursory inspection public economics appears to provide a straightforward and compelling answer of yes to the question posed in the title to this paper as economists have long argued appropriately designed taxes can in principle at least efficiently restrain levels of polluting activities and in addition such taxes will generate revenues so that we can reduce rates on other forms of taxation that distort the functioning of the economy green taxes in short promise a double dividend they can both reduce excessive levels of pollution and increase the efficiency of the overall tax system at least so several economists have argued recently 17 20 but is this really so with the growing recognition of the enormous revenue potential of certain environmental taxes especially carbon taxes to address the problem of global warming public economists have returned to this question with a new round of research efforts directed both to understanding the properties of pollution taxes as revenue sources and to estimating their revenue potential and the magnitude of their effects on the economy and the newly emerging literature is producing some quite astonishing and very troubling findings in this paper i want to review this work and explore its implications when viewed in relation to some other research it appears to suggest that most forms of regulatory activity at least those that increase the costs of the regulated activities may have hitherto unappreciated costs of a stunning magnitude what many of us would have taken to be second order side effects of environmental and other regulatory policies can be of a magnitude that compromises to a significant extent their welfare enhancing properties having reviewed this body of work i wish also to explore some issues in the political economy of green taxes it is helpful to begin by briefly putting the issue in historical perspective

the stagnation of smallholder agriculture in malawi a decade of structural adjustment abstract malawi s efforts at structural adjustment have revolved around reforming the marketing and pricing of outputs and inputs in smallholder agriculture in practice the price oriented adjustment policies were not thorough enough and have led to disappointing results there is clearly a need to push for further reforms in pricing however structural adjustment in malawi will have to go beyond just getting prices right policies must also concentrate on structural and institutional weaknesses that constrain smallholder agriculture and contribute to widespread food insecurity and malnutrition

public acceptance for environmental taxes self interest environmental and distributional concerns abstract while strongly recommended by economists it has often been politically difficult to impose taxes on externalities there is a substantial literature on public attitudes towards environmental taxes there has however been few comprehensive attempts to understand attitudes towards environmental taxes the main research question in this paper is which factors influence support for fuel taxation we propose a model of attitudes towards fuel taxation and test this model as well as more specific hypotheses using data from a representative survey of the adult norwegian population our results suggest that support for fuel taxation is best predicted by beliefs about environmental consequences followed by beliefs about consequences to others beliefs about consequences to self self interest is the factor that explains the least variation in support for fuel taxation the academically interesting result that support cannot be well explained without capturing a broad range of motivational factors is also highly policy relevant it implies that there is no magic formula for increasing public support for environmental taxes there are however some issues which can be addressed trust in how well the government spends the revenue and the perception that taxation does very little to change behaviour and thus to reduce environmental problems

sustainable allocation of greenhouse gas emission permits for firms with leontief technologies abstract in this paper we deal with production situations where a cap or limit to the amount of greenhouse gas emissions permitted is imposed fixing a tax for each ton of pollutant emitted is also considered we use bankruptcy rules to define cooperative games with externalities associated with these situations and analyze the existence of coalitionally stable allocations of the emission permits we prove that the constrained equal awards cea rule provides stable allocations and as a direct mechanism it is incentive compatible these two facts have interesting managerial implications to control pollution emissions

tracking global carbon revenues a survey of carbon taxes versus cap and trade in the real world abstract we investigate the current use of public revenues which are generated through both carbon taxes and cap and trade systems more than 28 3 billion in government carbon revenues are currently collected each year in 40 countries and another 16 states or provinces around the world of those revenues 27 7 8 billion are used to subsidize green spending in energy efficiency or renewable energy 26 7 4 billion go toward state general funds and 36 10 1 billion are returned to corporate or individual taxpayers through paired tax cuts or direct rebates cap and trade systems 6 57 billion in total public revenue earmark a larger share of revenues for green spending 70 while carbon tax systems 21 7 billion more commonly refund revenues or otherwise direct them towards government general funds 72 of revenues drawing from an empirical dataset we also identify various trends in systems use of carbon revenues in terms of the total revenues collected annually per capita in each jurisdiction and offer commensurate qualitative observations on carbon policy design choices

the environmental and economic impact of the carbon tax in australia to fulfil its emission reduction target pledged in the copenhagen accord the australian government has determined to introduce a carbon tax from july 1st 2012 this paper simulates the effects on the environment and on the economy of a carbon tax of a 23 per tonne of carbon dioxide proposed by the government with and without a compensation policy we employ a computable general equilibrium model with an environmentally extended social accounting matrix according to the simulation results the carbon tax can cut emissions effectively but will cause a mild economic contraction because the price signal is intact the proposed compensation plan has little impact on emission cuts while significantly mitigating the negative effect of a carbon tax on the economy

farm productivity in burkina faso effects of animal traction and nonfarm income the purpose of this invited paper is to stimulate at the micro meso and macro levels debate on positive analytical approaches to agricultural productivity the session focuses on africa because it is the only developing region where crop output and yield growth is lagging seriously behind population growth the present paper treats the micro farmhousehold level macro and meso analyses are useful for tracing productivity effects of policy and infrastructure change employing broad samples over long periods micro analyses tend to track smaller samples over shorter periods but dig below the aggregate surface to discern and explain productivity differences over crops zones and farmer groups micro analysis is useful for policy and technology formulation and for infrastructure and commodity promotion strategies further many aggregate studies are limited to only a few composite product categories because of lack of more detailed data on labor land and capital allocations over crops to obtain finer distinctions among crops one needs detailed farm management surveys since the spate of african farm management studies in the 1960s and 1970s soils have rapidly degraded access to land has become increasingly constrained factor and credit markets have changed structurally and nonfarm activity by farm households has apparently increased these changes should affect productivity across farm types suggesting the need to revive attention to farm level analysis past farm level productivity work in africa which largely used positive analysis tended to stratify the sample exogenously based on farm characteristics generally by farm size use of animal traction access to credit use of new seed varieties land tenure status or income we follow these earlier studies by stratifying the farm household data by a factor we expect to affect technical parameters namely farm capital in the guinean zone of burkina faso in particular we stratify according to whether the household owns animal traction equipment foll wing barrett et al and jaeger and matlon besides adding to empirical evidence on the productivity effects of animal traction we endogenously stratify the sample with a selectivity model an approach too rarely taken with a few recent exceptions such as carter in productivity research we then estimate production functions controlling for selectivity bias such an approach also allows us to test the indirect effect of nonfarm income on productivity through its effect on technology adoption as embodied in farm capital acquisition studies of nonfarm income effects on capital acquisition are not absent in the literature e g barrett et al in eastern burkina but they have been somewhat neglected in farm level work and neglected even more in aggregate level research because of the rarity of rural nonfarm income data

evolutionary macroeconomic assessment of employment and innovation impacts of climate policy packages climate policy has been mainly studied with economic models that assume representative rational agents such policy aims though at changing carbon intensive consumption and production patterns driven by bounded rationality and other regarding preferences such as status and imitation to examine climate policy under such alternative behavioral assumptions we develop a model tool by adapting an existing general purpose macroeconomic multi agent model the resulting tool allows testing various climate policies in terms of combined climate and economic performance the model is particularly suitable to address the distributional impacts of climate policies not only because populations of many agents are included but also as these are composed of different classes of households the approach accounts for two types of innovations which improve either the carbon or labor intensity of production we simulate policy scenarios with distinct combinations of carbon taxation a reduction of labor taxes subsidies for green innovation a price subsidy to consumers for less carbon intensive products and green government procurement the results show pronounced differences with those obtained by rational agent model studies it turns out that a supply oriented subsidy for green innovation funded by the revenues of a carbon tax results in a significant reduction of carbon emissions without causing negative effects on em ployment on the contrary demand oriented subsidies for adopting greener technologies funded in the same manner result in either none or considerably less re duction of carbon emissions and may even lead to higher unemployment our study also contributes insight on a potential double dividend of shifting taxes from labor to carbon

worker effort decisions and efficient gender specific wage tenure profiles i introduction during the past thirty years women have increased their labor force participation female labor market intermittency has decreased and women s total labor market experience and years of tenure with the current employer have increased what these trends imply about the evolution of the gender gap in wages depends in part on gender differences in returns to tenure it is therefore surprising that economists have all but ignored the empirical finding that women have higher returns to tenure than do men over a significant portion of their working lives one reason why this finding has been ignored or treated as an anomaly may be the lack of theoretical constructs which predict an inverse gender gap in returns to tenure several labor market models predict that women should have lower returns to tenure than men human capital theory offers the most frequently cited explanation of flatter earnings profiles for female workers according to human capital theory gains from specialization and exchange lead to one household member specializing in home production and the other in market work since only women bear children historically the outcome of the exchange has been that women have specialized in home production indeed all surveys of time use indicate that women spend on average two to three times as long on housework as men as a consequence of this allocation women anticipate intermittent labor force participation and fewer years overall in the labor force than men this pattern too is borne out in national surveys which invariably find shorter average tenure and fewer total years of labor market experience for women than for men women typically have shorter completed job spells as well hall 1982 table 5 presents evidence that the gender gap in completed job duration is quite large he estimates that 63 8 percent of men but only 49 6 percent of women hold jobs with eventual tenure of at least five years with 37 3 and 15 1 percent of men and women respectively holding jobs with eventual tenure of at least twenty years because of the greater intermittency and shorter anticipated work history for women than men women will find it optimal to acquire less human capital than men 1 lesser quantities of general human capital tends to flatten both the observed earnings experience profile and the observed earnings tenure profile two factors contribute to this pattern first skills deteriorate during periods out of the labor market as in mincer and polachek 1974 which flattens the earnings experience profile for women relative to men second women anticipating discontinuous work histories select into occupations with flatter earnings profiles to minimize the penalty to labor force withdrawals as in polachek 1981 the effects of firm specific human capital on gender differences in wage tenure profiles vary across models for example kuhn 1993 constructs an elegant game theoretic model of gender differences in training and wages if women have a higher exogenous exit rate than men in equilibrium they will be placed in jobs with lower levels of firm specific training with a positive relation between training and productivity and a common share rate of the costs and benefits of specific training for men and women the wage tenure profiles of men will be steeper than those for women in contrast becker and lindsay 1994 argue that firm specific human capital leads to higher returns to tenure for women than men becker and lindsay assume that men and women have the same level of firm specific training however women have greater variance in their opportunity cost of remaining with a firm and so are more likely than men to separate inefficiently by giving women a greater share of both the costs and benefits of firm specific human capital through a steeper wage tenure profile firms reduce undesirable turnover although human capital arguments dominate the literature on gender differences in the labor market other models of wage growth predict flatter wage tenure profiles for women

a competitive carbon emissions scheme with hybrid fiscal incentives the evidence from a taxi industry abstract as two major approaches to reduce carbon emissions command and control instruments and market based carbon trading systems have their own weaknesses our paper first proposes a type of endogenous equilibrium methodology to dynamically derive the industrial carbon emissions standards at the equilibrium the sum of all carbon assets and liabilities is zero in the considered industry moreover the standards fall over time with low carbon technological advance most importantly combining pigou s and coase s ideas we construct a fiscal instrument accounting for both carbon taxes and allowances based on the dynamically improved emissions standards and carbon trading prices this no revenue for government method implements a self operated ecology for carbon trading market finally considering the waterloo recession of carbon prices we introduce an adjustment factor into the model which generates a negative feedback mechanism with carbon prices to support our idea we present the application to beijing taxi industry in detail and raise relative policy implications based on the evidence

taxes organizational form and the deadweight loss of the corporate income tax abstract by changing the relative gain to incorporation corporate taxation can play an important role in a firm s choice of organizational form general equilibrium models have shown that substantial shifting of organizational form in response to tax rates implies a large deadweight loss of taxation this paper estimates the impact of taxes on organizational form using data from 1900 1939 the results indicate that the effect of taxes is significant but small a corporate rate increase of 0 10 raises the non corporate share of capital 0 002 0 03 the implied deadweight loss of the corporate income tax is around 5 10 of revenue

designing climate mitigation policy this us paper provides an exhaustive review of critical issues in the design of climate mitigation policy by pulling together key findings and controversies from diverse literatures on mitigation costs damage valuation policy instrument choice technological innovation and international climate policy the authors begin with the broadest issue of how high assessments suggest the near and medium term price on greenhouse gases would need to be both under cost effective stabilization of global climate and under net benefit maximization or pigouvian emissions pricing the remainder of the paper focuses on the appropriate scope of regulation issues in policy instrument choice complementary technology policy and international policy architectures

interpreting changes from the 1970s to the 1990s in african agriculture through village studies abstract assessments of the performance of agriculture in sub saharan africa are typically based on official production statistics at national level between the early 1970s and the mid 1990s these often show alarmingly poor rates of growth but there are good reasons to doubt the statistics and their interpretation an alternative is to examine the record from the village level upward this paper looks at the evidence from 26 case studies of change between the mid 1970s and the mid 1980s at the district or village level these suggest less cause for alarm than the national statistics they confirm that access to markets is essential for agricultural development the single biggest idea in the policy reforms of the 1980s but they also underline the importance of the detail of policy in remedying failures in product capital and insurance markets and in public investment in technology

the influence of gender on faculty salaries in the united states 1969 89 this study estimates the earnings differential between the male and female faculty in the united states over a period of two decades 1969 1989 five micro level data sets are used for this purpose a modified version of the widely used oaxaca model is used in the estimations it is found that the racial earnings gap narrowed considerably more than did the gender earnings differential over this period a higher male female earnings gap at the professor level relative to junior ranks suggests that relatively recent entrants in the academic labour market face a less discriminatory environment than did their predecessors a controversial finding is that the discriminatory component of the earnings differential between male and female faculty fell between 1969 and 1984 but rose thereafter

economic prescriptions for environmental problems how the patient followed the doctor s orders o ne of the dangers with ivory tower theorizing is that it is easy to lose sight of the actual set of problems which need to be solved and the range of potential solutions as one who frequently engages in this exercise i can attest to this fact in my view this loss of sight has become increasingly evident in the theoretical structure underlying environmental economics which often emphasizes elegance at the expense of realism in this paper i will argue that both normative and positive theorizing could greatly benefit from a careful examination of the results of recent innovative approaches to environmental management the particular set of policies examined here involves two tools which have received widespread support from the economics community marketable permits and emission charges pigou 1932 dales 1968 kneese and schultze 1975 both tools represent ways to induce businesses to search for lower cost methods of achieving environmental standards they stand in stark contrast to the predominant command and control approach in which a regulator specifies the technology a firm must use to comply with regulations under highly restrictive conditions it can be shown that both of the economic approaches share the desirable feature that any gains in environmental quality will be obtained at the lowest possible cost baumol and oates 1975 until the 1960s these tools only existed on blackboards and in academic journals as products of the fertile imaginations of academics however some countries have recently begun to explore using these tools as part of a broader strategy for managing environmental problems

combining price and quantity controls to mitigate global climate change abstract uncertainty about compliance costs causes otherwise equivalent price and quantity controls to behave differently and leads to divergent welfare consequences although most of the debate on global climate change policy has focused on quantity controls due to their political appeal this paper argues that price controls are more efficient simulations based on a stochastic computable general equilibrium model indicate that the expected welfare gain from the optimal price policy is five times higher than the expected gain from the optimal quantity policy an alternative hybrid policy combines both the political appeal of quantity controls with the efficiency of prices using an initial distribution of tradeable permits to set a quantitative target but allowing additional permits to be purchased at a fixed trigger price even sub optimal hybrid policies offer dramatic efficiency improvements over otherwise standard quantity controls for example a 50 trigger price per ton of carbon converts the 3 trillion expected loss associated with a simple 1990 emission target to a 150 billion gain these results suggest that a hybrid policy is an attractive alternative to either a pure price or quantity system

structural change in malawi since independence consequences of a development strategy based on large scale agriculture abstract this paper investigates the nature of the structural change which has occured in the malawian economy since independence and identifies key policies pursued by the government which it is argued have been decisive in shaping this development the salient feature of structural change is shown to be the rapid growth of large scale agriculture associated with an equally rapid transfer of labour into wage employment and a decline in the importance of peasant production the implications of these changes for living standards and future development and policy are considered

carbon tax incidence on household demand effects on welfare income inequality and poverty incidence in thailand abstract studying the impact of a carbon tax on household demand can be relevant in terms of securing public acceptance of a carbon tax and clarifying the implications for policy design this paper aims to fill a gap in the academic literature by simulating carbon tax scenarios and estimating distributional effects of the tax on household welfare income inequality and poverty rates based on household consumption in thailand the study employs a microsimulation model incorporating the economy wide effects of the tax on prices and consumers behavioral responses to changes in prices the results indicate that a carbon tax is progressive in thailand under revenue recycling scenarios by expanding social transfer programs when carbon tax revenues are recycled through pensions for elderly people the carbon tax could reduce the poverty rate and improve the welfare of households in the lowest quintile the results imply that the distributional impacts of environmental taxes could result in favorable outcomes for income inequality and poverty reduction in developing countries

between ostrom and nordhaus the research landscape of sustainability economics abstract we survey the emerging research area of sustainability economics through a quantitative full text analysis of peer reviewed journal publications from 1987 to 2013 to identify relevant contributions we draw on existing definitions of sustainability economics for a keyword based identification strategy a combined focus on a the human nature relationship b the long term uncertain future c normative orientation towards sustainability and d economic analysis our analysis of a random subsample of 343 relevant papers reveals that i sustainability economics is a rapidly developing research area ii while theoretical contributions shaped the area in earlier years applied work now constitutes the largest share of contributions iii the research landscape can be clustered into eleven research clusters these range from participatory governance of social ecological systems associated with the work of elinor ostrom to questions of intertemporal allocation and distribution applied to climate economics associated with the work of william nordhaus iv the research area is broad in scope and heterogeneous and there is relatively little interaction between important clusters v relevant contributions are published in more than 100 journals ten journals publish half of all contributions led by ecological economics and 40 appear in non economics journals underscoring the importance of interdisciplinary dialogue

links between nonfarm income and farm investment in african households adding the capital market perspective farm household surveys in the 1970s and 1980s showed that nonfarm activities provide an important share of household income contrasting with the conventional image of rural african households as deriving their food entitlement almost exclusively from the land e g matlon collier and lal low reardon et al haggblade hazell and brown much of the literature on nonfarm income has concentrated

how to set the proper level of carbon tax in the context of chinese construction sector a cge analysis abstract under global warming and severe environmental problems the paris agreement urges china to accelerate the pace of the low carbon economy improving the energy efficiency of the construction sector may be an important way to reduce co2 emissions as a reasonable energy policy instrument a carbon tax can effectively improve energy efficiency and reduce co2 emissions in this study a dynamic computable general equilibrium model is developed to explore the possible impacts of different carbon tax conditions on the energy consumption of the construction sector and the macroeconomy of china results show that the appropriate carbon tax is 60 rmb t which cannot only achieve the emission reduction target but also minimize the negative impact on the macroeconomy however the proper level of the carbon tax varies by building stage under the proper carbon tax level the peak of carbon emissions could be reached in 2025 the main purpose of this paper is to provide a theoretical basis for the government in formulating different energy policies

a choice experiment on fuel taxation and earmarking in norway abstract pigouvian taxes are efficient but unpopular among voters and hence often politically infeasible earmarking of revenues has been widely reported to increase public support for taxes but earmarking is generally not the most efficient use of the revenues this trade off between efficiency and political feasibility is the motivation for our primary research objective to quantify the effect of earmarking on support for fuel tax rises our secondary research objective is to investigate why earmarking increases support using data from a representative sample of the norwegian voter population n 1147 we estimate models of voter preferences for fuel taxes using logistic regression models our results show that in the absence of earmarking the majority of voters would like to reduce fuel taxes but earmarking the revenues for environmental measures has a substantial effect on voter support for fuel tax increases garnering a majority for increases of up to 15 above present levels further analysis indicates that a prime reason why earmarking for environmental measures is popular is that it increases the perceived environmental effectiveness of the tax and hence its legitimacy as an environmental rather than a fiscal policy instrument

consumers industrialists and the political economy of green taxation co2 taxation in oecd abstract economists have traditionally suggested that politicians should simply impose a uniform tax on harmful emissions as the first best solution prescribes however a detailed analysis of the actual design of green taxes in the oecd reveals that they are differentiated and far from this first best optimal design public choice theory suggests that an important reason that industry as a group in contrast to households is capable of lobbying against green taxation the paper presents empirical findings on co2 taxation within the oecd countries which confirm this theoretical prediction taxes are not uniform and households pay a tax rate which is six times higher than that paid by the industry on average even when tax revenue is fully refunded to industry the potential losers energy intensive firms will lobby harder against it than the potential winners labor intensive firms due to small group advantages the norwegian case confirms these arguments finally it is suggested that a co2 tax may perhaps successfully be applied to households because they tend to be badly organized as such a mix of green taxes in relation to non organized interests and grandfathered permit markets in relation to organized interests should be considered in the search for cost effective and politically feasible instruments

issues in the design of environmental excise taxes t ax law has long had environmental consequences although the consequences have often been unintended for example tax provisions passed to assist the timber industry in the 1920s permitted expensing of the costs of reforestation and planting rather than having to depreciate them over a period of time along with capital gains treatment for harvested timber provisions which may have encouraged a more rapid harvest of domestic timberland percentage depletion allowances to assist the oil industry a deduction based on a percentage of the value of oil sold rather than the taxpayer s basis in the oil which became part of the internal revenue code in 1926 arguably have led to exploitation of oil and mineral deposits at a rate greater than the socially optimal rate similarly the purpose of the federal motor fuels tax when expanded in 1956 was to fund highway construction although now it is common to regard it as at least potentially an environmental tax aimed at addressing the externalities caused by automobile use of course these tax provisions were not motivated by environmental concerns the 1970s began to see efforts at environmental tax policy although at the time the focus of the policies more often was energy conservation rather than reduction in pollution between 1978 and 1986 congress provided tax credits for residential energy conservation expenditures in 1978 congress enacted the gas guzzler excise tax an excise tax that varies with the environmental protection agency s fuel economy rating of automobiles it remains in force today congress also made available tax exempt bond finance for pollution control equipment between 1978 and 1986

pollution tax heuristics an empirical study of willingness to pay higher gasoline taxes economists widely agree that in concept pollution taxes are the most cost effective means of reducing pollution with the advent of monitoring and enforcement technologies the case for pollution taxation is generally getting stronger on the merits despite widespread agreement among economists however pollution taxes remain unpopular especially in north america some oppose pollution taxes because of a suspicion that government would misspend the tax proceeds while others oppose pollution taxes because they would impose economic hardships upon certain individuals groups or industries and there is no pollution tax more pathologically hated as the gasoline tax this is unfortunate from an economic perspective as a gasoline tax is easy to implement and is a reasonable pigouvian tax scaling proportionately with the harms of consumption surprisingly there is a dearth of theory explaining this cleave between economists and virtually everybody else drawing on behavioralist literatures this paper introduces several theories as to why people and governments so vehemently oppose pollution taxes using the example of gasoline taxes we provide some empirical evidence for these theories we also show that revenue recycling the use of tax proceeds to reduce other taxes is an effective means of reducing opposition to gasoline taxes

male female wage differentials and policy responses without implicating them for any of the contents of the paper i am grateful to the following for helpful discussions or comments andrea beller university of illinois david bloom harvard and columnbia glen cain university of wisconsin ron ehrenberg cornell victor fuchs stanford bob gregory australian national university jonathan leonard university of california berkeley roberta robb brock university and paul weiler harvard financial support of the humanities and social sciences committee of the research board of the universitu of toronto is eratefullu acknowlede ed

the adoption of intensive monocrop horticulture in southern cameroon abstract results from a 1997 survey of 208 households in the humid forest zone of southern cameroon indicate that african policy makers seeking to intensify agricultural production should focus attention on the horticultural sub sector the survey which gathered information on horticultural production practices found that the average expenditure on agro chemical inputs by horticultural producers using monocrop production systems was 190 us ha which greatly exceeds the fao reported national average expenditure of 6 50 us ha a logit model of monocrop adoption indicated that the size of land holding per household had a negative effect on adoption congruent with population driven technical change and that increases in unit transportation costs significantly decreased the probability of adoption these findings suggest that policy makers should target horticultural intensification in areas of higher population density and promote investment in rural roads the age of the household head had a significant negative and elastic effect on adoption which in combination with an increase in the cohort of younger farmers in the rural population induced by macro economic events contributed to the spread of intensified horticulture in the study area roughly two thirds of rural households also produce cocoa and the quantity of cocoa produced was positively associated with adoption of intensive horticultural systems suggesting that export crop promotion indirectly facilitated diversification of agriculture women s participation in intensive monocrop production was limited and efforts to promote their greater involvement are recommended

seniority and monopsony in the academic labor market workers with high seniority usually have higher wages than workers with low seniority and the same total labor marke t experience in contrast the results of this paper indicate that higher seniority is associated with lower salaries for university professors the author documents this finding for national surveys a nd individual institutions and explains it as due to monopsonistic discrimination by employers copyright 1993 by american economic association

promoting sustainable intensification and productivity growth in sahel agriculture after macroeconomic policy reform abstract policy reforms and structural adjustment programs in sahelian countries have eliminated many public agricultural support programs creating a vacuum that has not yet been filled by the private sector sahelian farmers thus face more difficult access to inputs and higher input costs input use has stagnated or declined yet higher population and less land for expansion of cultivation make it vital to increase the productivity of already cultivated land through adoption of intensive agricultural production techniques while partial intensification is becoming common too little investment is occurring in inputs and land improvements that maintain soil fertility control erosion and improve water availability partial intensification therefore risks being an unsustainable strategy higher and more sustainable productivity growth requires significantly increased use of chemical and organic fertilizer improved seeds bunds and animal traction the dilemma is how to ensure that such investments are financially and economically profitable and affordable in terms of government budgets it is crucial to 1 improve input access and reduce the unit cost of inputs to farmers through infrastructure investment 2 increase the productivity of fertilizer and improved seed by encouraging complementary farm level investments 3 improve the coordination of input and output marketing systems and improve incentives for private sector involvement 4 improve farmers ability to buy inputs using credit and non farm income 5 reduce the financial risks of purchased input use through integrated input output markets and innovative credit schemes and 6 evaluate the net economic benefits of selected agricultural support programs including input subsidies

green gold burley tobacco smallholder agriculture and poverty alleviation in malawi abstract the abolition in 1990 of the estate monopoly on cultivation of burley tobacco is expected to play an important role in reducing poverty among smallholders in malawi a nationwide survey in 1993 shows that smallholder households cultivating burley also grow more hybrid maize use more fertilizer and are more food secure but resource poor households particularly those headed by women face land and labor constraints on burley adoption burley and hybrid maize increase the demand for hired labor but not enough to absorb the growth in the rural labor force broad based poverty alleviation requires technology and programs targeted at the majority of smallholders with holdings of 0 5 hectares or less