administrative reform as credible commitment the impact of autonomy on revenue authority performance in latin america abstract during the past decade diverse developing countries have introduced radical reforms in their collection of taxes in more than 15 countries traditional tax departments have been granted the status of semi autonomous revenue authorities aras this paper investigates the design and impact of aras in latin america arguing that politicians create aras in order to signal a credible commitment to taxpayers that tax administration will be more effective fair and competent using survey data from corporate taxpayers and tax professionals in bolivia mexico peru and venezuela the paper presents econometric analyses and performance indicators that support the hypothesis that there is a link between perceptions of credibility performance and agency autonomy

engendering an inclusive low carbon energy transition in japan considering the perspectives and awareness of the energy poor abstract engendering a low carbon energy transition is necessary to limit climate change impacts and temperature rises ideally this transition would be inclusive incorporating all stakeholders however the issue of energy or fuel poverty is a major obstacle to this goal this research investigates energy poverty in japan using a subjective multidimensional energy poverty measure clarifying the linkages between energy poverty and an inclusive just transition in terms of energy system and policy awareness behavior and preferences through the analysis of an original survey we uncover that there is a marked difference between low income and energy poverty households environmental awareness and their subsequent attitude toward the low carbon energy transition currently the energy poor have a negative attitude toward the low carbon energy transition in japan causing a lack of self reported engagement which will not engender an inclusive just transition our findings suggest that if the japanese low carbon energy transition were to be inclusive a further 5 percent of households could participate in the low carbon energy transition through access to solar or renewable energy capital findings identify the need for policies targeted at the energy poor specifically promoting access to solar capital and low carbon technologies in addition to existing policies targeted at low income households

tax collection with agency costs private contracting or government bureaucrats historically governments contracted with private agents known as tax farmers to collect taxes this paper develops a theoretical framework for determining when a welfare maximizing government should choose tax farmers over bureaucratic tax collectors while bureaucratic collectors have an incentive to shirk and raise collection costs above least costs profit maximizing private collectors tend to reduce tax evasion below the optimal level generally the choice of collection methods depends on a comparison of the welfare loss associated with monitoring in the bureaucratic setting and the welfare loss associated with overdetection of evasion in the private setting copyright 1992 by the london school of economics and political science

semi autonomous revenue authorities in sub saharan africa silver bullet or white elephant a major component of tax administration reform in sub saharan africa for the last 30 years has been the creation of semi autonomous revenue authorities saras the effects of their creation on rev

tax innovations and public revenues in sub saharan africa we study the effect of two tax innovations value added taxes vat and autonomous revenue authorities ara on tax revenues in sub saharan africa the dataset consists of 47 countries over 1980 2010 we find that vats have no effect on total tax revenues neither in the short nor in the long run aras lead to higher tax revenues in the short and medium run but the effect dissipates over time the main conclusion is that tax innovations are not a panacea to overcome the revenue shortages in african countries but they are helpful in the short and medium run

discount rates and credit markets theory and evidence from rural india three models of credit markets 1 the permanent income model 2 upward sloping credit supply to individual borrowers and 3 constrained credit due to imperfect enforcement are tested using credit market data and an experimental study of individuals discount rates in south india the permanent income model is rejected by both the discount rate and the credit market data the discount rate data are consistent with either of the other two models while the credit market data are consistent with a combination of these two models other explanations are found to be insufficient to explain the results of this study

the value added tax its causes and consequences almost unknown in 1960 the value added tax vat is now found in more than 130 countries raises around 20 percent of the world s tax revenue and has been the centerpiece of tax reform in many developing countries this paper explores the causes and consequences of the remarkable rise of the vat a key question is whether it has indeed proved as its proponents claim an especially effective form of taxation to address this it is first shown that a tax innovation such as the introduction of a vat reduces the marginal cost of public funds if and only if it also leads an optimizing government to increase the tax ratio this observation leads to the estimation on a panel of 143 countries for 25 years of a system of equations describing both the probability of vat adoption and the revenue impact of the vat the results point to a rich set of determinants of vat adoption this being more likely for example if a country has a program with the imf and the less open it is to international trade in the revenue equation the presence of a vat does indeed have a significant impact but also a complex one with a negative intercept effect counteracted by positive effects that are greater the higher are per capita income and more tentatively openness while the sign of the revenue impact of the vat is thus in general ambiguous most countries that have adopted a vat seem to have gained a more effective tax instrument in doing so though this is less apparent in subsaharan africa and most without it seem likely to gain from its adoption

fuel poverty in the uk is there a difference between rural and urban areas abstract fuel poverty is a significant policy issue an argument often made is that rural households are more likely to be fuel poor due to the nature of rural housing stock and the more limited choice of energy sources in rural areas this paper uses panel data to compare the level and dynamics of fuel poverty in rural and urban areas of the uk in addition to descriptive analysis discrete hazard models of fuel poverty exit and re entry are estimated and used to assess the influence of housing and personal characteristics on the time spent in fuel poverty the results indicate that on average the experience of fuel poverty in urban areas is longer with a higher probability of fuel poverty persistence however on average the rural fuel poor appear more vulnerable to energy price increases while living in private accommodation or a flat increases their probability of remaining fuel poor relative to their urban counterparts these results indicate policy effectiveness may differ across rural and urban space however they also emphasise the limits of spatial targeting monitoring the dynamics of fuel poverty is important for ensuring that policy targets are effective and reaching those most in need

building synergies between climate change mitigation and energy poverty alleviation abstract even though energy poverty alleviation and climate change mitigation are inextricably linked policy goals they have remained as relatively disconnected fields of research inquiry and policy development acknowledging this gap this paper explores the mainstream academic and policy literatures to provide a taxonomy of interactions and identify synergies and trade offs between them the most important trade off identified is the potential increase in energy poverty levels as a result of strong climate change action if the internalisation of the external costs of carbon emissions is not offset by efficiency gains the most significant synergy was found in deep energy efficiency in buildings the paper argues that neither of the two problems deep reductions in ghg emissions by mid century and energy poverty eradication is likely to be solved fully on their own merit while joining the two policy goals may provide a very solid case for deep efficiency improvements thus the paper calls for a strong integration of these two policy goals plus other key related benefits like energy security or employment in order to provide sufficient policy motivation to mobilise a wide scale implementation of deep energy efficiency standards

an economic model of soil conservation by introducing soil depth and soil loss into a simple model of agricultural production this paper seeks to determine when the private path of erosion differs from the socially optimal path considering the depletion of soil only and abstracting from the environmental disruption caused by erosion the paper argues that under most institutional arrangements the social and private rates of erosion are the same the paper concludes that public policy should be directed toward reducing erosion only when it leads to significant pollution externalities

environmental externalities in traditional agriculture and the impact of trade liberalization the case of ghana abstract this paper provides a framework for the evaluation of trade policies that explicitly considers the effects of such policies on the environmental resources biomass in doing this we estimate the effects of biomass as a factor of agricultural production and test the hypothesis that farmers efficiently exploit biomass a resource held in common property the main findings are i biomass is an important factor of production in ghanian agriculture ii the biomass resource is exploited beyond the socially optimal level iii a deepening of trade liberalization is likely to induce further losses of biomass and deforestation and iv national income is likely to fall in response to further trade liberalization

aid and domestic resource mobilization with a focus on sub saharan africa increasing tax revenues in low income countries is essential to address future development finance requirements this is particularly important for aid recipients the focus of this paper theory shows that although there are many ways in which aid can have indirect effects on tax revenue the direct effects arise because aid and tax are alternative sources of revenue and political economy factors influence the choices made by government aid may discourage tax effort if viewed as a politically less costly source of revenue under different conditions the policies and reforms associated with aid may increase revenue through promoting growth encouraging more efficient tax structures or supporting reforms to tax administration while cross country evidence reveals no systematic pattern country studies show that aid can be associated with administrative and efficiency reforms to increase tax revenue the conclusion discusses how aid and donors can promote increasing domestic tax revenue

energy poverty policies in the eu a critical perspective abstract once confined to the uk context where it was struggling to receive political recognition for years the concept of energy or fuel poverty is slowly entering the eu s agenda where it has crept into a number of regulatory documents and policy proposals using evidence gathered from an international workshop and semi structured interviews with decision makers experts and advocacy activists in brussels and sofia this paper explores the adoption of policies aimed at addressing energy poverty within i the organisational context of the eu and ii national state institutions in bulgaria a member state facing considerable problems at the energy affordability social inequality nexus while the former are largely nascent and poorly co ordinated the latter have already been implemented de jure to a significant extent however many unresolved issues surrounding their de facto implementation remain at the same time national policy makers remain largely unaware of the existence of direct energy poverty related initiatives at the eu level

poverty consumption risk and soil conservation abstract this paper studies the impact of poverty and uninsured consumption risk on incentives to invest in soil conservation a stochastic dynamic model is used to show how consumption risks and costs of investment influence incentives to adopt soil conservation measures on low income farms the model is calibrated using production data from hillside farms in the philippines simulations with the model demonstrate how the value of soil conservation depends on the cost of investing the risk characteristics of the soil conservation method and differences among households in capacity to bear risk model predictions are compared with empirical adoption patterns as described by a probit model and nonparametric kernel regressions of adoption probability empirical findings show how differences in farm size tenure security risk exposure and access to credit help to explain patterns of soil conservation adoption implications for policy are discussed

long term impacts of global food crisis on production decisions evidence from farm investments in indonesia did the rise in food prices have a long term impact on agricultural production using household level panel data from seven provinces of indonesia this paper finds that the price shock created a forward looking incentive to invest which can dynamically enhance productivity in agriculture it also finds that the impact of the price shock on investment behavior differs by initial wealth in response to price increases wealthy farmers invested more in productive assets while poor farmers increased their financial savings as well as consumption price spikes relax liquidity constraints which increases investments among the richer while do so savings and consumptions among the poor possibly leading to diverging income inequality in the long run

the pre programme earnings dip and the determinants of participation in a social programme implications for simple programme evaluation strategies the key to estimating the impact of a programme is constructing the counterfactual outcome representing what would have happened in its absence this problem becomes more complicated when agents such as individuals firms or local governments self select into the programme rather than being exogenously assigned to it this paper uses data from a major social experiment to identify what would have happened to the earnings of self selected participants in a job training programme had they not participated in it we investigate the implications of these earnings patterns for the validity of widely used before after and difference in differences estimators

counting and multidimensional poverty measurement this paper proposes a new methodology for multidimensional poverty measurement consisting of an identification method k that extends the traditional intersection and union approaches and a class of poverty measures m our identification step employs two forms of cutoff one within each dimension to determine whether a person is deprived in that dimension and a second across dimensions that identifies the poor by counting the dimensions in which a person is deprived the aggregation step employs the fgt measures appropriately adjusted to account for multidimensionality the axioms are presented as joint restrictions on identification and the measures and the methodology satisfies a range of desirable properties including decomposability the identification method is particularly well suited for use with ordinal data as is the first of our measures the adjusted headcount ratio we present some dominance results and an interpretation of the adjusted headcount ratio as a measure of unfreedom examples from the us and indonesia illustrate our methodology

measuring energy poverty in japan 2004 2013 abstract this paper first examines energy or fuel poverty in japan from 2004 to 2013 especially around the time of the 2011 great east japan earthquake geje to analyze the issue the paper employs various poverty and vulnerability measures with the assistance of our unique dataset the results indicate the aggravation of energy poverty among lower income and vulnerable households during the past decade resulting from both the escalation of energy prices and lowering of income the analysis also employs a new decomposition technique and identifies the explanatory factors associated with the increase in energy poverty these results suggest there were major changes in the forces driving the increase in energy poverty before and after the geje after 2011 income alleviates energy poverty in japan with energy prices becoming the main driving factor

the rationale for energy efficiency policy assessing the recognition of the multiple benefits of energy efficiency retrofit policy the rationale for energy efficiency policy can be framed in terms of a variety of different benefits this paper considers how different benefits have been used within the overall rationale for energy efficient retrofit policy in different contexts we posit that different rationales may be used for the same policy response and that the form of rationale used may affect the design delivery or the level of policy support with different rationales making it easier to account for different results considering retrofit policy in the contexts of the uk germany new zealand and ireland we characterise policy rationale in each case assessing what the key perceived benefits have been and whether they have changed over time the analysis identifies some marked differences between cases with the recognition of benefits and the ensuing policy rationale resulting from a complex mix of political social and economic influences we find that recognition of multiple benefits may not equate with multiplied policy support and instead it is more likely that different rationales will have relevance at different times for different audiences the findings highlight that alongside evidence for policy it is important to also consider how the overall rationale for policy is eventually framed

aid and taxation in ethiopia abstractthe relation between aid and taxation is largely contested in the literature on the one hand aid may act as a substitute for tax revenue and thus have a crowding out effect it can also have a detrimental effect on domestic tax institutions on the other hand it can promote and support tax mobilisation through policy advice technical assistance and conditionality in addition to more indirect channels the case of ethiopia supports the existence of a positive relation between aid and tax which occurs mainly through policy advice and technical assistance rather than conditionality this finding is grounded in both quantitative and qualitative analysis

state conditional fertilizer yield response on western kenyan farms 15 16 17 we acknowledge with gratitude support from the rockefeller foundation the united states agency for 18 international development usaid leadership enhancement in agriculture program leap and the 19 coupled natural and human systems program of the biocomplexity initiative of the national science 20 foundation through grant bcs 0215890 the world agroforestry center icraf graciously hosted 21 the lead author for part of the research and provided soil test results we are also grateful to james

learning by doing and learning from others human capital and technical change in agriculture household level panel data from a nationally representative sample of rural indian households describing the adoption and profitability of high yielding seed varieties hyvs associated with the green revolution are used to test the implications of a model incorporating learning by doing and learning spillovers the estimates indicate that i imperfect knowledge about the management of the new seeds was a significant barrier to adoption ii this barrier diminished as farmer experience with the new technologies increased iii own experience and neighbors experience with hyvs significantly increased hyv profitability and iv farmers do not fully incorporate the village returns to learning in making adoption decisions

spatializing energy justice this paper introduces the concept of spatial justice and inequality to understandings of energy poverty and vulnerability by applying an explicitly spatial lens to conceptualize energy poverty as a form of injustice it contributes to debates in the domain of energy justice where previous examinations of energy deprivation through a justice framing have focused on inequalities between social groups and often marginalized questions of spatial difference we start from the premise that geographic disparities in the risk and incidence of domestic energy deprivation are a key component of energy justice an extensive literature review has allowed us to highlight the spatial and temporal variation of cross sectoral and entire energy chain injustices that lead to elevated energy poverty risks these processes contribute to the rise of energy injustices via four mechanisms which we term landscapes of material deprivation geographic underpinnings of energy affordability vicious cycles of vulnerability and spaces of misrecognition operating at a multiplicity of scales while lending some support to area based approaches towards energy poverty alleviation our findings also suggest that such policies alone may marginalize the underlying structural dynamics that re produce spatial inequalities therefore achieving energy justice necessitates broader interventions in the fundamental driving forces of spatial inequality

tax revenue performance and vulnerability in developing countries this paper addresses vulnerability of revenue to external shocks using export composition to capture economic structure and differentiating countries according to income levels resource endowments and political regimes this gives a richer characterization than previous studies lower income countries are vulnerable to shocks especially in terms of trade associated with the greatest revenue loss democratic regimes seem to be less vulnerable to revenue losses due to shocks than non democracies whereas revenue in resource rich is more vulnerable to shocks except natural disasters than non resource rich countries we find a negative relationship between manufacturing exports and revenue in lower income countries

strategic and user driven transition scenarios toward a low carbon society encompassing the issues of sustainability and societal equity in japan abstract this study investigates the sustainability and social equity impacts of the ongoing transition toward a low carbon society in japan to assess the merits of top down and bottom up approaches the research uses mixed methods incorporating householder and energy expert surveys scenario design utilizing the japanese markal times framework and sustainability and social equity evaluation surveys identify householder energy system and participation preferences alongside energy expert input on social equity and policy design scenario building is undertaken to compare energy system outcomes between the strategic japanese policy approach and a user driven approach to energy transition both cognizant of 2050 environmental goals both scenarios are comparatively assessed using a holistic sustainability evaluation process conclusions identify the impact of liberalization and subsequent householder participation in the energy system in japan when compared to a strategic policy driven approach both approaches have positive ramifications on social equity and policy burden distribution outcomes however the household participation scenario delivers a more equitable outcome distributing energy policy burdens in a fairer manner through the realization of an energy system which is safe stable and affordable the findings have practical applications in participatory policy design and the development of energy policy which can achieve transition goals while being sensitive to householder preferences and social equity concerns

quantifying the prevalence of fuel poverty across the european union abstract the literature and policy base for fuel poverty in the uk and ireland is well established and there is a growing body of single country studies beyond these two eu member states for example brunner et al 2012 dubois 2012 robine et al 2008 however on a european level the last analysis of fuel poverty was conducted in 2004 prior to the enlargement of the eu using survey data this paper presents an updated overview of the prevalence of european fuel poverty in the context of the accession of numerous former social states and rising fuel prices analysis reveals the phenomenon of fuel poverty is occurring across the eu with particularly high levels of fuel poverty found in eastern and southern european states it is argued that there are both eu and national policy frameworks in place that address climate change and these could be used as a starting point for countries to address fuel poverty through improved domestic energy efficiency measures this paper reflects research undertaken in 2011 supported by eaga charitable trust within the umbrella of work examining issues of poverty and social exclusion across the eu which has enabled access to the eu silc dataset

objective and subjective measures of fuel poverty as energy prices continue to rise to reflect the real cost of carbon the numbers of households in fuel poverty is increasing rapidly this paper uses a unique data set to explore one alternative measure of fuel poverty based on whether consumers feel able to afford their energy similar to one introduced by the government a few years ago we explore the links between an expenditure based and our subjective measure of fuel poverty and compare these differences with those between official measures amongst low income households 28 spent more than a tenth of their income on energy in the home and so would be likely to qualify as fuel poor under the most usual definition but only 16 felt unable to afford sufficient energy to keep their homes warm amongst this group who felt they had difficulty in affording sufficient energy less than half were expenditure fuel poor the paper argues that reintroduction of a self reported measure by the government would be a valuable aid to policy development

the profits of power land rights and agricultural investment in ghana we examine the impact of ambiguous and contested land rights on investment and productivity in agriculture in akwapim ghana we show that individuals who hold powerful positions in a local political hierarchy have more secure tenure rights and that as a consequence they invest more in land fertility and have substantially higher output the intensity of investments on different plots cultivated by a given individual corresponds to that individual s security of tenure over those specific plots and in turn to the individual s position in the political hierarchy relevant to those specific plots

price policy and returns to soil conservation in semi arid kenya this paper develops an approach that uses relatively easily available data to examine empirically how policy induced price changes affect the incentives of farmers in developing countries to adopt soil conservation measures the model shows that there is no simple relationship between price distortions created by government policies and farmers incentives to adopt conservation measures policy induced price changes could lead to either more or less conservation depending on site specific conditions data from a semi arid region in kenya are used to illustrate the magnitude and direction of changes in price policy on returns to terracing and to show how results are affected by the nature of the conservation technology in the study area higher commodity prices increase incentives to adopt conservation measures on steep slopes but lower them on shallower slopes if terraces were to require more land to be taken out of production than assumed in the calculations higher commodity prices would tend to discourage farmers from adopting them

soil quality and fertilizer use rates among smallholder farmers in western kenya studies of fertilizer use in sub saharan africa have been dominated by analyses of economic and market factors having to do with infrastructure institutions and incentives that prevent or foster increased fertilizer demand largely ignoring how soil fertility status conditions farmer demand for fertilizer we apply a switching regression model to data from 260 farm households in western kenya in order to allow for the possibility of discontinuities in fertilizer demand based on a soil carbon content scc threshold we find that the usual factors reflecting liquidity and quasi fixed inputs are important on high scc plots but not on those with poorer soils external inputs become less effective on soils with low scc hence the discernible shift in behaviors across soil quality regimes for many farmers improved fertilizer market conditions alone may be insufficient to stimulate increased fertilizer use without complementary improvements in the biophysical conditions that affect conditional factor demand

peasant household behaviour with missing markets some paradoxes explained a model of peasant household behavior under varying degrees of household specific food and labor market failures is constructed to show that these structural features can explain several well known patterns of peasant response which have often been attributed to peculiar motives presumed specific to peasants the model explains sluggish response to cash crops prices and high instability in perceived food and labor scarcities the key role of manufactured consumer goods prices in stimulating peasants effort in cash crops production the effectiveness of taxation as opposed to incentives in stimulating cash crops production and the key role of technological change in food production to enhance cash crop production results are obtained analytically in the case of one market failure and by numerical simulation with more than one

wealth weather risk and the composition and profitability of agricultural investments despite the growing evidence that farmers in low income environments are risk averse there has been little empirical evidence on the importance of risk in shaping the actual allocation of production resources among farmers differentiated by wealth the authors use panel data on investments in rural india to examine how the composition of productive and nonproductive asset holdings varies across farmers with different levels of total wealth and across farmers facing different degrees of weather risk income variability is a prominent feature of the experience of rural agents in low income countries the authors report evidence based on measures of rainfall variability that the agricultural investment portfolio behavior of farmers in such settings reflects risk aversion due evidently to limitations on consumption soothing mechanisms such as crop insurance or credit markets the authors results suggest that uninsured weather risk is a significant cause of lower efficiency and lower average incomes a one standard deviation decrease in weather risk measured by the standard deviation of the timing of the rainy season would raise average profits by up to 35 percent among farmers in the lowest wealth quartile moreover rainfall variability induces a more unequal distribution of average incomes for a given distribution of wealth wealthier farmers are willing to absorb significant risk without giving up profits to reduce production risk smaller farmers have to invest their limited wealth in ways that reduce their exposure to risk at the cost of lower profit rates the authors found that at high levels of rainfall variability differences in rates of profit per unit of agricultural assets were similar across classes of wealth but over the sample range of rainfall variability these rates of profit were always higher for the poorer farmers than for the wealthier ones suggesting that the disadvantages of small farmers in risk diffusion are more than offset by their labor cost advantage

agricultural productivity and soil carbon dynamics a bioeconomic model we examine the dynamic management of a soil resource the issue at the core of both environmental and development challenges in developing countries our theoretical framework extends the traditional bioeconomic model of renewable resources to soil carbon management and investigates the effects of changes in agricultural practices on farmers natural resource base and livelihoods we parameterize the model using an eight year panel data set from an agronomic experiment and data from household and market surveys in the western kenyan highlands the optimal maize yields and soil carbon stocks are higher than those observed in the region this divergence is partly explained by farmers heterogeneous time preferences with the implied discount rates of 5 to 25 information barriers and market imperfections the steady state shadow price for soil carbon ranges from 95 mg to 168 mg indicating a significant opportunity cost for soil mismanagement

business organisations party systems and tax composition in developing countries a comparison between colombia and peru abstractthis paper explores the relationship between socio political institutions and tax composition in developing countries it argues that strong business organisations and stable political party systems reduce the uncertainty of fiscal contracts for economic elites the decrease in uncertainty leads elites to accept a larger share of the tax burden which governments then collect using progressive tax types more intensively to illustrate this claim i provide evidence from a comparative analysis of the peruvian and the colombian tax history between 1970 and 2010

from targeting to implementation the role of identification of fuel poor households this paper proposes to evaluate the efficiency of fuel poverty policies by looking at them as a three step process these steps are policy targeting identification of households and implementation of measures each of these steps are costly and can face feasibility problems this is particularly true in the case of fuel poverty policies because of the multidimensional aspect of fuel poverty therefore public policies in that field are necessarily imperfect and this should be taken into account in the analysis of policies this three step framework is applied to the french fuel poverty policy which has been developed in 2010 as its practical modalities of implementation are still under discussion we mainly discuss the choices made in terms of targeting and highlight the role of identification of fuel poor households as a key factor for the success of that policy the general idea behind this discussion is that the efficiency of such policies has to be viewed in a comprehensive way which includes the three policy steps

induced innovation and land degradation results from a bioeconomic model of a village in west africa abstract this paper introduces a modeling method which simulates a village s response to population and market pressure the method combines a recursive and dynamic linear programming model with a biophysical model of soil condition and plant growth that predicts yields and land degradation for different type of land land use and cropping patterns the linear programming model simulates farmers plans aggregated at the village level under constraints of risk aversion food consumption land area soil fertility soil depth labor and cash availability detailed agroecological factors determine the main processes of land degradation a large number of technological alternatives representing different degrees of labor and or land saving techniques available in the study areas are introduced taking into account their respective constraints costs and advantages the method has been calibrated for a village located in the sub humid region of burkina faso several simulations are carried out to the year 2030 the results show that population pressure leads to intensification and investment in land conservation practices but not necessarily to better farm incomes increasing market opportunities can play a more positive role in boosting productivity but for the next decades the best way to increase production per farmer is to let farmers migrate from the high population density areas to the low population density areas because under the current economic conditions of most sahelian countries intensification per hectare is stil more expensive than the fallow system

reassessing tax and development research a new dataset new findings and lessons for research there is growing concern with the weaknesses of economic statistics relating to developing countries and the risks that poor data have generated misleading research findings and poor policy advice cross country tax data offer a striking example with existing datasets frequently highly incomplete analytically imprecise plagued by errors and sharply lacking in transparency this paper introduces the new government revenue dataset from the international centre for tax and development which provides a more reliable transparent and comprehensive basis for cross national research this new dataset has initially been used to re examine major questions about the relationships between tax and aid elections economic growth and democratization the results deepen some previous conclusions and call others seriously into question notably the assertion that aid dependence consistently undermines domestic revenue efforts above all the research demonstrates the value of the new dataset the broader sensitivity of many results to changes in data quality and coverage and the consequent importance of expanded attention to and investments in data quality

nudging farmers to use fertilizer theory and experimental evidence from kenya we model farmers as facing small fixed costs of purchasing fertil izer and assume some are stochastically present biased and not fully sophisticated about this bias such farmers may procrastinate post poning fertilizer purchases until later periods when they may be too impatient to purchase fertilizer consistent with the model many farmers in western kenya fail to take advantage of apparently profit able fertilizer investments but they do invest in response to small time limited discounts on the cost of acquiring fertilizer free deliv ery just after harvest calibration suggests that this policy can yield higher welfare than either laissez faire policies or heavy subsidies

fiscal capacity and the quality of government in sub saharan africa summary historical evidence from the industrialized world suggests that the expansion of the modern state s capacity to tax eventually led to more democratic and less corrupt governments using a dataset that covers 31 sub saharan african countries over the 1990 2005 period we study whether the positive effect of fiscal capacity on the quality of government prevails in contemporaneous sub saharan africa as well the results provide consistent evidence that within sub saharan africa fiscal capacity decreases corruption and increases democracy

on tax efforts and colonial heritage in africa abstract one commonly observed phenomena about taxation in africa are regional differences and the fact that southern african countries have higher levels of shares of taxation in gdp this article argues that the major source of differences in tax effort is the colonial histories of various countries using standard measures of tax effort in a panel data framework and dividing colonial africa along forms of incorporation into the colonial system it shows that african countries and others with similar colonial histories have higher levels of tax effort however the difference disappears when we control for the colonial factor these results hold under different model specifications

are kenyan farmers under utilizing fertilizer implications for input intensification strategies and research abstract it is widely perceived that african farmers are under utilizing inorganic fertilizer however very little long term evidence from farmers fields accounting for variations in agro ecological conditions has been assembled to back this claim or determine the conditions under which it is true using five waves of nationwide household survey data from kenya covering 13 years we estimate the relative and absolute profitability of nitrogen application rates on maize fields and compare these profitability conditions to observed nitrogen use patterns over time in general we find that farmers are consistently and steadily increasing towards risk adjusted economically optimal rates of fertilizer application over time and that in the most agriculturally productive areas farmers application rates on maize sometimes exceed rates that maximize profitability fertilizer use rates may nevertheless be profitably raised in these areas but doing so will require the adoption of complementary inputs and management practices that raise maize response rates to fertilizer application this motivates a more holistic approach to input intensification strategies in the region

agricultural decisions after relaxing credit and risk constraints the investment decisions of small scale farmers in developing countries are conditioned by their financial environment binding credit market constraints and incomplete insurance can limit investment in activities with high expected profits we conducted several experiments in northern ghana in which farmers were randomly assigned to receive cash grants grants of or opportunities to purchase rainfall index insurance or a combination of the two demand for index insurance is strong and insurance leads to significantly larger agricultural investment and riskier production choices in agriculture the binding constraint to farmer investment is uninsured risk when provided with insurance against the primary catastrophic risk they face farmers are able to find resources to increase expenditure on their farms demand for insurance in subsequent years is strongly increasing with the farmer s own receipt of insurance payouts with the receipt of payouts by others in the farmer s social network and with recent poor rain in the village both investment patterns and the demand for index insurance are consistent with the presence of important basis risk associated with the index insurance imperfect trust that promised

geography urbanization and lock in considerations for sustainable transitions to decentralized energy systems the importance of moving towards sustainable energy systems is critical to achieving societal sustainability transitions theory is a useful approach to look at the potential and limitations of systemic transitions and has been applied in a number of alternative contexts in the current study we examine transitions theory and its implications for the progress of decentralized energy systems in japan in the period after the fukushima accident of 2011 empirical data from a targeted nation wide survey is used to examine the progress and change in consumer preference and behavior since the disaster as possible evidence for the potential transition paths likely to be occurring importantly this study utilizes data that examines a spectrum of urban rural and disaster non disaster areas in order to explore whether any differences in response patterns were present results indicate that although the desire of stakeholders has been to change the energy system there are barriers to transformation variation between rural and urban sites and between disaster affected and unaffected areas was examined indicating that at least under the chosen classification there was surprisingly little difference the results have implications for understanding transitions at a much broader level and imply that if the empirical data is a useful indicator japan is within a locked in or reorganization transition in order to move to a more radical conversion type change a new approach is likely to be required to nurture niche innovations effectively

confronting an unsolvable problem deforestation in malawi abstract in malawi the low price of firewood from customary land is a barrier to reforestation if government were to grow trees and sell them at current firewood prices subsidies would be so great that only a very small part of wood deficits could be met nor will farmers plant enough trees since many other cash crops give higher returns than firewood moreover there is no way to raise the price of firewood to levels where adequate amounts of tree planting would become economic therefore deforestation cannot be reversed under the circumstances the most important obligation is to minimize the damage done to agricultural land as trees disappear this means that all of the relatively few trees planted must fulfill a soil protection function a tree planting strategy based on these realities will be very different from a strategy that assumes the deforestation problem can be solved