externality and literacy a note abstract kaushik basu and james foster 1998 have opened up an interesting approach to the measurement of literacy in which the phenomenon of externality has an important role to play the externality these authors examine is what one may call a material externality and they demonstrate that reckoning such an externality in the measurement of literacy provides an instrumental justification for horizontal equity the present note elucidates this link through a specific formulation of the basu foster thesis it also suggests that apart from a material externality there is also a psychic externality to be considered the psychic externality runs in a direction somewhat orthogonal to that of the material externality postulated by basu and foster and it is shown that reckoning such an externality in the measurement of literacy provides an instrumental justification for being sensitive to levels of literacy attainment in comparisons of literacy improvements in a broad sense the note suggests

smallholder market participation concepts and evidence from eastern and southern africa abstract this paper reviews the evidence on smallholder market participation with a focus on staple foodgrains i e cereals in eastern and southern africa in an effort to help better identify what interventions are most likely to break smallholders out of the semi subsistence poverty trap that appears to ensnare much of rural africa the conceptual and empirical evidence suggests that interventions aimed at facilitating smallholder organization at reducing the costs of intermarket commerce and perhaps especially at improving poorer households access to improved technologies and productive assets are central to stimulating smallholder market participation and escape from semi subsistence poverty traps macroeconomic and trade policy tools appear less useful in inducing market participation by poor smallholders in the region

the effects of real exchange rate depreciation on stochastic producer prices in low income agriculture abstract this paper considers the effects of real exchange rate depreciation on stochastic agricultural producer prices in low income agriculture conventional wisdom that real depreciation achieved through nominal currency devaluation stimulates tradables production does not universally hold in the presence of stochastic prices in fact real depreciation is only stimulative in two cases importables that remain importable and nontradables that become exportable garch estimation of time series price data on several commodities from madagascar support the hypotheses generated by the analytical model

immiserized growth in liberalized agriculture abstract this paper offers a simple model that reconciles rivalrous claims about liberalization s impact on low income agrarian economies growth can accompany smallholder welfare reduction the model developed here reverses the causality of bhagwati s immiserizing growth model price shocks cause welfare effects that drive output response rather than output shocks causing price shocks and then welfare effects as in the trade theoretic original immiserized growth seems a plausible explanation for some important cases e g the malagasay case considered here in which liberalization appears to have engendered both real agricultural growth and heightened food security stress among smallholder food producers

the household response to persistent natural disasters evidence from bangladesh we examine the short run economic impacts of recurrent flooding on bangladeshi households surveyed in 2000 2005 and 2010 in 2010 household income and expenditure survey hies households answered a set of questions on whether they were affected by flood and its likely impacts we identify two treatment affected groups by using the self reported data and historical rainfall data based flood risk index we estimate a difference indifference did model to quantify the impacts on income expenditure asset and labour market outcomes and further extend our analysis to different income and expenditure brackets overall we find robust evidence of negative impacts on agricultural income and expenditure intriguingly the extreme poor i e the bottom 15th quintile experience significant positive impacts on agricultural income in the self reported treatment case

a derivation of the marginal abatement cost curve abstract the relationship between a firm s technology and its marginal abatement cost mac curve is explored even under the simplest specifications the mac curve will be kinked at some point except under a special assumption which in reality could easily be violated the nondifferentiability implies that the choice of instrument under uncertainty may depend on the targeted level of emissions reduction also stability conditions for dynamic tax mechanisms may be violated in the neighborhood of the kink point a policy implication is that in some cases output restrictions are as efficient as emissions restrictions in contrast to previous results

pitfalls in the measurement of real exchange rate effects on agriculture abstract studies of the effects of real exchange rates on agriculture commonly assume that these effects can be identified as those which pertain to traded goods in the standard australian model of an open economy further it is common to assume that the indirect effects of changes in the real exchange rate have the same impact on the various production activities within agriculture this paper discusses the extent to which these stylized facts reflect reality focusing in particular on the extent of tradibility in agricultural markets the irrelevance of results based on free trade equilibria to policy analyses and the importance of the characteristics of crop production functions in estimating the effects of real exchange rate changes ignoring these considerations can cause errors in the measurement of policy effects on agricultural incentives

the impact of domestic trade on china s regional energy uses a multi regional input output modeling to systematically reveal how domestic trade impacts on china s regional energy uses an interprovincial input output modeling is carried out to address demand derived energy requirements for the regional economies in 2007 based on the recently available data both the energy uses embodied in final demand and interregional trade are investigated from the regional and sectoral insights significant net transfers of embodied energy flows are identified from the central and western areas to the eastern area via interregional trade shanxi is the largest energy producer and interregional embodied energy deficit receiver in contrast to guangdong as the largest energy user and surplus receiver by considering the impacts of interregional trade the energy uses of most eastern regions increase remarkably for instance shanghai hainan zhejiang beijing jiangsu and guangdong have their embodied energy requirements 87 49 19 97 13 64 12 60 6 46 and 6 38 times of their direct energy inputs respectively in contrast the embodied energy uses of some central and western regions such as inner mongolia shanxi xinjiang shaanxi and guizhou decrease largely the results help understand the hidden network linkages of interregional embodied energy flows and provide critical insight to amend china s current end reduction oriented energy policies by addressing the problem of regional responsibility transfer

on measuring child costs with applications to poor countries the theoretical basis for measuring child costs is discussed and detailed consideration is given to two straightforward procedures for calculation engel s food share method and rothbarth s adult good method each of these methods embodies different definitions of child costs so that the same empirical evidence can generate quite different estimates depending on the method used it is shown that true costs are generally overstated by engel s method and understated by rothbarth s procedure although the latter unlike the former can provide a sensible starting point for cost measurement our estimates from sri lankan and indonesian data suggest that children cost their parents about 30 40 percent of what they spend on themselves

are some groups more vulnerable to macroeconomic shocks than others hypothesis tests based on panel data from peru abstract which socio economic groups are most vulnerable to welfare declines during a macroeconomic shock after clarifying the difference between poverty and vulnerability this paper presents an analytical framework and applies it to panel data from peru major findings are 1 households with better educated heads are less vulnerable 2 female headed households are no more vulnerable than male headed households 3 households with more children are more vulnerable 4 transfer networks that assist the poor in relatively stable periods do not protect them during a major shock unless they originate from outside peru and 5 peru s social security program is targeted neither to vulnerable nor to poor households but other transfer programs are better targeted

weakly relative poverty prevailing measures of relative poverty are unchanged when all incomes grow or contract by the same proportion this property stems from seemingly implausible assumptions about the disutility of relative deprivation and the cost of social inclusion the authors propose weakly relative lines that relax these assumptions on calibrating our measures to national poverty lines and survey data we find that half the population of the developing world in 2005 lived in poverty only half of whom were absolutely poor the total number of poor rose over 1981 to 2005 despite falling numbers of absolutely poor with sustained economic growth the incidence of relative poverty became less responsive to further growth the number of relatively poor rose just as the numbers of absolutely poor fell

is it better to be a boy a disaggregated outlay equivalent analysis of gender bias in papua new guinea the demographic evidence of gender bias in many countries has provided an impetus for finding ways to study the status of women in developing countries because of the lack of accurate intra household data deaton 1989 introduced a method for using household expenditure data to infer discrimination in the allocation of goods between boys and girls few studies of discrimination using the method however have detected bias even though alternative indicators suggest it is a serious problem in this paper we study the case of papua new guinea a country in which there are many indicators of severe gender bias discrimination in the allocation of goods between boys and girls within households in papua new guinea is examined using deaton s outlay equivalent ratio method adding a boy to the household reduces expenditure on adult goods by as much as would a nine tenths reduction in total outlay per member but girls have no effect on adult goods expenditure the hypothesis of haddad and reardon 1993 that

poverty and household size the widely held view that larger families tend to be poorer in developing countries has influenced research and policy the scope for size economies in consumption cautions against this view we find that the correlation between poverty and size vanishes in pakistan when the size elasticity of the cost of living is about 0 6 this turns out to be the elasticity implied by a modified version of the food share method of setting scales by contrast some measures of child nutritional status indicate an elasticity of unity consideration of the weight attached to child versus adult welfare may help resolve the non robustness of demographic profiles of poverty excerpt

health as a family matter do intra household education externalities matter for maternal and child health abstract this paper is concerned with the role of education as a determinant of health care choices the central premise of the paper is that utilisation of health services is determined not solely by an individual s own education but rather by a notion of effective education which incorporates the educational attainment of other household members the paper sets out a general framework for representing intra household education externalities and proposes a number of specific hypotheses concerning the way in which the education of different household members affects health care choices these hypotheses are tested on data from mozambique focusing on maternity services child immunisations and child malnutrition we draw four major conclusions from the analysis first while maternal education seems to be the education variable of primary importance for the health service and malnutrition variables under consideration the education of other household members does have a significant and sometimes larg

the hotspots reference routes and research trends of marginal abatement costs a systematic review abstract as one of the most effective means of evaluating environmental policies marginal abatement costs macs have been adopted in a growing body of research this study characterizes the mac related literature from 1993 to 2018 on web of science based on a systematic review bibliometric analysis and mind mapping the results classify the research hotspots into influential factors methods and empirical applications the three most frequently mentioned influential factors are technical change discount rates and energy prices compared with top down models bottom up models including engineering model and expert based method are the most widely used improvements in the former focus on strengthening market behavior effect while those in the latter aim to overcome the weaknesses of negative costs and lack of interaction across measures mac applications focus on environmental policies with two new research areas recently emerging co benefits and sectoral abatement costs furthermore a reference route is proposed by summarizing the applicability of methods and matching relationships among influential factors methods and empirical problems finally potential research directions are summarized based on the identified research hotspots and a similar co word analysis in marginal cost field such as considering the effects of both multiple influential factors and the interaction among factors on maccs

a modified human development index abstract this paper discusses a modified index for measuring human development the suggested index is based on the components of the human development index hdi developed by the united nations development programme undp since 1990 it discusses two categories of technical issues related to the hdi for 1995 those related to the components and those relevant to the structure of the index the data from the human development report 1995 for 174 countries are used to test the robustness of the suggested index and the results are compared to those of the hdi the new index is then used to delineate with some justification different groups of countries at various levels of human development

aggregate sources of relative price variability among agricultural commodities a measure of relative price variability among forty seven agricultural commodities is developed for the period 1962 to 1987 econometric models are used to explore the effects of macroeconomic instability on relative price variability within the agricultural sector the results show that these relative prices are more variable when actual and unanticipated inflation rates are higher they may also be more variable during periods when real shocks to the macroeconomy are relatively large thus monetary and fiscal events are not neutral with respect to the agricultural sector because macroeconomic instability appears to create instability and increased uncertainty in agricultural markets

tax versus emissions trading scheme in the long run in this paper we compare the performance of emission taxes and tradable permits under free market entry when firms face idiosyncratic ex ante cost uncertainty we show that under auctioned permits insufficient entry occurs while under a linear emission tax scheme depending on parameters market entry can be either excessive or insufficient our long run analysis thus contrasts with spulber s 1985 equivalence result and also modifies weitzman s result in favor of an ets in that the superiority of a tax over an ets is not guaranteed even when the weitzman condition favors a tax we also show that an ets is superior to a tax scheme when the entry cost is low and the magnitude of uncertainty asymmetric information and the size of the output market are large

non linearities and equivalence scales this paper focuses on the estimation and testing of equivalence scales in the context of a demand system with nonline ar logarithmic expenditure effects in its budget share equations the authors show that such nonlinearity enables one to identify the scal es without demographic separability restrictions on preferences and to avoid false rejection of the hypothesis that the scales are independ ent of the base utility level the empirical analysis is based on micro data drawn from the u k family expenditure survey copyright 1993 by royal economic society

equivalence scale relativities and the extent of inequality and poverty most inequality and poverty theory analyzes equivalent income distributions for homogeneous populations incomes are assumed to be deflated by an equivalence scale that accounts for differences in needs between households yet in practice there is no consensus about what the appropriate equivalence scale is the authors analyze how the choice of equivalence scale affects inequality and poverty measures and show that there is a systematic relationship between equivalence scale generosity and the extent of inequality and poverty they consider most of the measures in common use and provide some empirical illustrations copyright 1992 by royal economic society

the effect of policy reforms on agricultural incentives in sub saharan africa in 1981 the world bank s report on subsaharan africa cited trade and exchange rate biases against exports poor macroeconomic and public sector management and a price bias against agriculture as contributing to the region s poor performance and slow growth world bank 1981 1986b since then average per capita income in the region has continued to fall overall agricultural production has grown more slowly than population declining food production per capita has led to rising food imports and for many of the primary agricultural exports africa s share of world trade has fallen steadily from 1970 to 1983 many african governments now agree on the central role of agriculture and the need to strengthen incentives in the sector united nations this paper assesses how reforms in macroeconomic and sector policies have affected agricultural incentives government policies can be broadly classified into three groups macroeconomic policies that affect incentives in all sectors generally agricultural sector policies that affect farm profitability directly by changing commodity and input prices and general and sector specific policies that may affect farm profitability indirectly by changing factor prices and influencing productivity e g public expenditures on research extension and infrastructure this paper analyzes the impact on agricultural incentives of the first two groups of policies the analysis of producer prices presented below is based on data for about twothirds of the countries in sub saharan africa which account for more than three fourths of agricultural gross domestic product gdp country coverage varies by indicator depending in part on whether comprehensive data are available simple averages are used to summarize policy performance across countries in contrast to weighted averages commonly used to assess aggregate economic effects the analysis of producer prices covers one to four principal export crops per country 2

the developing world is poorer than we thought but no less successful in the fight against poverty a new data set on national poverty lines is combined with new price data and almost 700 household surveys to estimate absolute poverty measures for the developing world we find that 25 of the population lived in poverty in 2005 as judged by what poverty typically means in the world s poorest countries this is higher than past estimates substantial overall progress is still indicated the corresponding poverty rate was 52 in 1981 but progress was very uneven across regions the trends over time and regional profile are robust to various changes in methodology though precise counts are more sensitive

learning and stock effects in environmental regulation the case of greenhouse gas emissions abstract this paper concerns the optimal regulation of greenhouse gases that lead to global climate change in particular we focus on uncertainty and learning which over time resolves uncertainty we present an empirical stochastic model of climate economy interactions and present results on the tension between postponing control until more is known vs acting now before irreversible climate change takes place uncertainty in our model is in the damage caused by global warming the results suggest that a temporary carbon tax may dominate a permanent one because a temporary tax may induce increased flexibility

two moment decision models and expected utility maximization two moment decision models are consistent with expected utility maximization only if the choice set or the agent s preferences are restricted this paper identifies a restriction which is sufficient to ensure this consistency and confirms that it holds in many economic models the implications for economic analysis are then derived two different approaches to representing an agent s preferences over strategies yielding random payoffs are in wide use under the mean standard deviation ms approach the agent is assumed to rank the alternatives according to the value of some function defined over the first two moments of the random payoff while the expected utility eu criterion assumes that the expected value of some utility function defined over payoffs is used instead the fact that there are these two competing approaches has generated a considerable literature some authors are concerned with the advantages and disadvantages of each while others deal with conditions under which the potentially different approaches would yield the same results or at least approximately so space does not

effects of macroeconomic policies on sectoral prices the effect of macroeconomic policies on the relative prices of internationally traded and domestic goods has been the subject of extensive study analysis of the way in which these policies then affect prices at the sectoral level is complicated by the beterogeneity of sectoral production even the prices of single products usually are determined by both domestic and traded components we present a framework which first traces the influence of macropolicy on the relative prices of exports imports and home goods it then accounts for each sector s degree of tradability which is based on the importance of trade in sectoral income and the influence of macroeconomic policy on sectoral prices to illustrate the use of this approach it is applied to a simulation of trade liberalization in argentina our results suggest that economywide policies had substantial negative effects on both the real exchange rate and the incentives to agricultural exports in an open economy the prices of tradable products are determined by world prices nominal exchange rates and taxes the prices of products which are not tradable are determined by domestic supply and demand which are themselves influenced by the actions and policies of the government some very important economic decisions depend on the price of tradables relative to that of nontradables the real exchange rate we examine here the way in which broader government policies affect the real exchange rate and through it prices at the sectoral level

your retirement and my health behavior evidence on retirement externalities from a fuzzy regression discontinuity design this paper presents evidence on intra household retirement externalities by assessing the causal effect of partner s retirement on own health behaviour in europe we identify partner s retirement effects by applying a fuzzy regression discontinuity rd framework using retirement eligibility as an exogenous instrument for partner s retirement status using data from the survey of health ageing and retirement in europe share we find that while partner s retirement increases own physical activity it also increases smoking by up to 7 cigarettes a day and increases alcohol intake by 1 2 drinks per day furthermore we find that physical activity increases only for individuals that are themselves retired pointing toward compensated effects that arise due to husband s and wife s retirement being complements similarly an increase in alcohol intake is observed only if the individuals are themselves retired and an increase in smoking is only observed if the partner is a smoker suggesting mutual positive externalities and leisure complementarities

the real exchange rate and macroeconomic performance in sub saharan africa abstract pooled time series and cross section data for 33 countries in sub saharan africa ssa confirm the negative relationship between the real exchange rate rer misalignment and economic performance economic growth imports exports saving and investment macroeconomic instability also slows growth and other indicators of performance higher levels of misalignment are accompanied by higher levels of macroeconomic instability both lower levels of rer misalignment and instability lead to better economic performance the edwards model of rer determination performs well for the region black market premia tend to show a greater degree of misalignment in rer than alternative measures

accounting for selectivity and duration dependent heterogeneity when estimating the impact of emigration on incomes and poverty in sending areas the impacts of international emigration and remittances on incomes and poverty in sending areas are increasingly studied with household survey data but comparing households with and without emigrants is complicated by a triple selectivity problem first households self select into emigration second in some emigrant households everyone moves while others leave members behind and third some emigrants choose to return to the origin country allowing for duration dependent heterogeneity introduces a fourth form of selectivity one must now worry not just about whether households migrate but also when they do so this paper clearly sets out these selectivity issues and their implications for existing migration studies and then addresses them by using survey data designed specifically to take advantage of a randomized lottery that determines which applicants to the over subscribed samoan quota may immigrate to new zealand the analysis compares incomes and poverty rates among left behind members in households in samoa that sent samoan quota emigrants with those for members of similar households that were unsuccessful in the lottery policy rules control who can accompany the principal migrant providing an instrument to address the second selectivity problem while differences among migrants in which year their ballot was selected allow for estimation of duration effects the authors find that migration reduced poverty among former household members but they also find suggestive evidence that this effect may be short lived as both remittances and agricultural income are negatively related to the duration that the migrant has been abroad

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

the income earned by women impacts on welfare outcomes abstract this paper provides an updated review of the evidence on income pooling across household members income pooling is one of the main predictions of the unitary model of the household new studies come to much the same conclusion as do past studies income pooling and the unitary model are rejected the paper then looks beyond the mere rejection of the unitary model and explores some of the issues that arise first what is the progress in testing the restrictions imposed by non unitary models of the household second what are the implications of rejection of the unitary model for policy and program design finally what are some of the challenges faced by programs and policies that internalize the rejection of income pooling in terms of impact evaluation

how robust is a poverty profile comparison of poverty such as when poverty is greatest typically matter far more for policy choices than do aggregate measures of poverty such as how many people are deemed poor the authors examine alternative methods for constructing poverty profiles focusing on their internal consistency and appropriateness for guiding policy none is perfect but some methods appear to be preferable to others when the aim is to inform policies for fighting absolute consumption poverty a case study on indonesia reveals that the country s regional and sectoral poverty profile is highly sensitive to some aspects of measurement but quite robust to others

literacy sharing assortative mating or what labour market advantages and proximate illiteracy revisited abstract this paper explores the relationship between household literacy and the labour market outcomes of illiterate household members which basu narayan and ravallion 2002 report using household income and expenditure data from bangladesh bnr attribute a considerable wage premium for proximate illiterate women in off farm employment to labour productivity gains from intra household literacy sharing this wage premium also suggests that women may be more efficient recipients of literacy externalities than men we propose that any such relationship might not be due to higher labour productivity but may have other explanations such as systematically different and unobserved attributes of illiterate females married into literate households we also pay attention to the negative selection of illiterate females into non farm wage employment which contrary to received wisdom suggests that household literacy may not be unambiguously progressive for females we propose that the widely reported finding that

lock in effect of emission standard and its impact on the choice of market based instruments abstract a country s existing emission standard policy will lead to a lock in effect when the country plans to adopt new market based instruments to control greenhouse gas emissions it must consider this effect as it chooses among instruments to avoid larger efficiency loss in this paper we find that the lock in effect will cause a kink point to occur on the marginal abatement cost mac curve this change of shape for the mac curve reminds us to be cautious in choosing market based instruments when applying weitzman s rule we also introduce this concept into a dynamic multi regional computable general equilibrium cge model for china and simulate mac curves for all regions after applying weitzman s rule we propose a timeline for introducing price instruments under different marginal benefit mb curve scenarios

household equivalence scales theory versus policy researchers agree that household equivalence scales are intended to measure the variation in income needed to bring households of different composition to the same welfare level researchers do not agree however about how the term household welfare is to be defined this article traces the historical and philosophical development of three distinct definitions when the conceptual bases of several popular methods for the estimation of equivalence scales are explored it becomes clear that advances in theoretical rigor have not always worked to bring the literature closer to answering questions of policy concern

child growth shocks and food aid in rural ethiopia this brief summarizes the results of a gender impact evaluation study entitled child growth shocks and food aid in rural ethiopia conducted between 1995 and 1996 in ethiopia the study observed the impact of food aid on child growth and shocks in communities on the child level food aid has a positive significant impact on the growth in height of children the total amount of food aid appears on average to be sufficient to offset the negative effects of plot damage on child growth given the fact there remains a massive amount of child stunting there must be large amounts of mis targeting of aid girls seem to be more resilient to shocks than boys

what will china s carbon emission trading market affect with only electricity sector involvement a cge based study abstract on december 29 2017 china s carbon trading scheme ets was officially launched and it may be the largest emission trading platform in the world this paper establishes 5 counter measured scenarios based on the recently launched china s national ets market and constructs a dynamic recursive computable general equilibrium model to study the impact of national ets on the economy energy and environment we find that the national ets will have a negative impact on gdp by 0 19 1 44 the national ets can significantly increase the price of electricity however the increase in the prices of other commodities will be much lower than that of electricity as long as the mechanism of the ets market remains unchanged emission reduction per year will increase linearly economic output and co2 emission are sensitive to annual decline factor adf this paper argues that china s national ets market is an effective tool to reduce co2 emission and we suggest that adf could be 0 5 when allocating carbon allowance for the electricity sector this could balance economic output and co2 reduction also it is easy to achieve the goal of double control total amount and intensity in china

children and household economic behavior this paper looks at some of the methodological issues that arise in modeling the effects of children on household behavior and presents some estimates for selected areas for our purposes household behavior will be taken to refer to household decisions on labor supply the allocation of expenditure to different periods and the decision as to what to do with the difference between income and expenditure i shall be concerned mainly with the effects of dependent children and i restrict attention largely to western societies excerpt

agricultural incentives in developing countries measuring the effect of sectoral and economywide policies the impact of sector specific direct and economywide indirect policies on agricultural incentives for 18 developing countries for the period 1975 84 are estimated the direct effect is measured by the proportional difference between the producer price and the border price adjusting for distribution storage transport and other marketing costs the indirect effect has two components 1 the impact of the unsustainable portion of the current account deficit and of industrial protection policies on the real exchange rate and thus on the price of agricultural commodities relative to nonagricultural nontradables and 2 the impact of industrial protection policies on the relative price of agricultural commodities to that of nonagricultural tradable goods the authors found that a in almost all cases the direct effect is equivalent to a tax on exportable goods and to a subsidy for importables b the indirect effect also taxes agriculture and dominates the direct effect and c the direct policies for both importables and exportables stabilize domestic producer prices

measuring poverty and differences in family composition the equivalence scales used to adjust for differences in family composition when measuring poverty exhibit considerable variation this paper suggests an alternative approach that allows for differences in social judgements regarding the treatment of different types of family and examines the relation with the choice of poverty measure the resulting dominance criteria cannot provide a complete ranking but allow the extent of disagreement to be identified their application is illustrated by the example of changes in child benefits copyright 1992 by the london school of economics and political science

household economies of scale in consumption theory and evidence household economies of scale arising from the existence of househo ld public goods increasing returns in household production and or bulk discounts are incorporated into a utility theoretic model of household demands individuals are assumed to be identical and symmetrically treated within households economies of scale parameters for five goods are estimated using the quadratic expenditu re system and data from the u s consumer expenditure survey on expenditures by all adult households results suggest the existence o f significant economies of scale in the consumption of all of the included goods with economies being especially pronounced in the consumption of shelter copyright 1988 by the econometric society

shared literacy and employment in the nonfarm sector this article empirically examines the external effect of family literacy on the earnings of illiterate workers considering recent findings that rural nonfarm sectors in developing countries are becoming more important in determining the welfare of households this article tests two hypotheses 1 an illiterate person living with literate members i e a proximate illiterate person is more likely to find a job in the nonfarm sector than is an illiterate person living with no literate person i e an isolated illiterate person and 2 wage income of a proximate illiterate worker is higher than that of an isolated illiterate worker the empirical results suggest that proximate illiterate persons earn higher wages than isolated illiterate persons because they are more likely to be employed in the nonfarm sector

on the measurement of poverty official statistics in the united states and the united kingdom show a rise in poverty between the 1970 s and the 1980 s but scepticism has been expressed with regard to these findings in particular the methods employed in the measurement of poverty have been the subject of criticism this paper re examines three basic issues in measuring poverty the choice of the poverty line the index of poverty and the relation between poverty and inequality one general theme running through the paper is that there is a diversity of judgments which enter the measurement of poverty and that it is necessary to recognize these explicitly in the procedures adopted there is likely to be disagreement about the choice of poverty line affecting both its level and its structure in this situation we may only be able to make comparisons and not to measure differences and the comparisons may lead only to a partial rather than a complete ordering the first section of the paper discusses the stochastic dominance conditions which allow such comparisons illustrating their application by reference to data for the united states the choice of poverty measure has been the subject of an extensive literature and a variety of measures have been proposed in the second section of the paper a different approach is suggested considering a class of measures satisfying certain general properties and seeking conditions under which all members of the class which includes many of those proposed give the same ranking those sceptical about measures of poverty often assert that poverty and inequality are being confounded the third section of the paper distinguishes four different viewpoints and relates them to theories of justice and views of social welfare

a cost benefit analysis of female primary education as a means of reducing hiv aids in tanzania this article uses panel data related to 20 tanzania regions and 8 years to estimate the direct and indirect effects of female primary education on hiv aids rates a recursive framework for education income and infections is employed based on two autoregressive equations that allow us to obtain dynamic estimates of effectiveness we find that the indirect effect working through changes in income outweighs the direct positive effect of education on infections implying that female education can be effective as an intervention to lower the disease in tanzania the estimates of effectiveness are then utilized to carry out a cost benefit analysis of the education expenditures the human capital approach is used to measure the benefits irrespective of the timing of the benefits and costs and the discount rate alternatives we consider our best estimates result in positive net benefits with benefit cost ratios in the range 1 3 2 9 this article was completed with the financial assistance provided by the

literacy and intrahousehold externalities abstract the size of the intrahousehold externality created when a literate household member provides literacy services to illiterate members is estimated in this paper using a model of children s height for age in papua new guinea this externality appears to be large these results support the use of a new measure of literacy developed by basu and foster 1998 to take account of the gains when illiterates live in households where at least one person is literate regional rankings change when the new measure of literacy is used suggesting that policies guided by the usual measure of adult literacy may overlook an important pathway for human development

incentive policies and export performance in sub saharan africa abstract the paper presents the results of an econometric investigation which shows that exports in general and agricultural exports in particular are responsive to price incentives in sub saharan africa it is further shown that within sub saharan africa market oriented countries generally gained and interventionist countries lost export market shares the differences in export performance are even greater if comparisons are made between private market economies and etatist countries in a three fold classification scheme that puts some countries in an intermediate category

tenure security resource endowments and tree growing evidence from the amhara region of ethiopia we analyze roles of tenure insecurity and household endowments in explaining tree growing in ethiopia where farmers cannot sell or mortgage land and factor markets are imperfect unlike most other studies we use panel data and examine determinants of the decision and intensity of tree growing unlike other studies we compare the decision to keep trees and the decision to plant in the recent past the results suggest that land tenure insecurity influences the decision to grow trees but not the number of trees households grow household endowments time and location also explain tree growing by farmers

emissions taxes versus intensity standards second best environmental policies with incomplete regulation the best emissions tax or emissions cap may be an inferior instrument under incomplete regulation leakage without leakage an intensity standard regulating emissions per unit of output is inferior due to an implicit output subsidy this inefficiency can be eliminated by an additional consumption tax with leakage an intensity standard can dominate the optimal emissions tax since the implicit output subsidy prevents leakage the addition of a consumption tax improves an intensity standard s efficiency may prevent leakage and may be efficient comparing intensity standards to output based updating shows that the latter dominates if updating is sufficiently flexible

prices infrastructure household characteristics and child height household survey data from brazil matched with information collected at the municipio county level are used to examine the relation between parental characteristics primarily education community infrastructure and services and child height data are drawn from 2 sources informacoes basicas municipais 1974 is a periodic survey of 4000 municipios on infrastructure health and education services estudo nacional da despesa familiar 1974 75 is a household survey covering 37000 children under age 8 on income expenditure anthropometry and socio demographic characteristics local food price indices were derived from these data child height is significantly affected by local infrastructure particularly modern sewerage and piped water in urban areas and electricity in rural settings these effects are stronger for children over 2 those of better educated mothers and those in households spending more higher prices for dairy products and sugar are linked to lower urban child height and higher fish prices to lower rural child height significantly for children of illiterate mothers higher prices for meat and rice are associated with taller height possible because men usually eat these foods mothers with elementary schooling can counteract the effects of food prices on child height number of teachers is positively related to height in rural children numbers of nurses and of hospital beds is associated with shorter children suggesting that large hospitals locate in poor urban areas this study has succeeded in identifying some public investments that affect child health

how does tax system on energy industries affect energy demand co2 emissions and economy in china abstract energy savings and co2 emission reduction have become a major issue in recent years taxes on energy production sectors may be an effective way to save energy reduce co2 emissions and improve environmental quality this paper constructs a dynamic recursive computable general equilibrium cge model to analyze the impact of the energy tax on energy economy and environment from the perspective of tax rates and tax forms specific tax and ad valorem tax the results show that adjusting the tax system and the tax rate has important implications for energy conservation while having minor impacts on the output of other industries the impact of an increasing energy tax on the energy demand is greater than the impact on sectoral output indicating that energy efficiency will be increased to some extent the co2 reduction will increase over time when an ad valorem tax is implemented on enterprises we found that ad valorem tax has greater elasticity of economic output energy demand and co2 emission reduction the results support the direction of china s resource tax reform however we argue that it is better to increase the tax rate relatively and relax the control on energy prices so that energy efficiency will increase