has india s economic growth become more pro poor in the wake of economic reforms the extent to which india s poor have benefited from the country s economic growth has long been debated a new series of consumption based poverty measures spanning 50 years including a 15 year period after economic reforms began in earnest in the early 1990s is used to examine that issue growth has tended to reduce poverty including in the post reform period there is no robust evidence of more or less poverty responsiveness to growth since the reforms began although there are signs of rising inequality the impact of growth is higher when using poverty measures that reflects distribution below the poverty line and when using growth rates calculated from household surveys rather than national accounts the urban rural pattern of growth matters for the pace of poverty reduction however in marked contrast to the period before the reforms urban economic growth in the period after the reforms has brought significant gains to the rural poor as well as the urban poor

tracking poverty over time in the absence of comparable consumption data following the endorsement by the international community of the millennium development goals mdg there has been an increasing demand for practical methods for steadily tracking poverty an economically intuitive and inexpensive methodology is explored for doing so in the absence of regular comparable data on household consumption the minimum data requirements for this methodology are the availability of a household budget survey and a series of surveys with a comparable set of asset data also contained in the budget survey this method is illustrated using a series of demographic and health surveys for kenya

price indexes inequality and the measurement of world poverty i discuss the measurement of world poverty and inequality with particular attention to the role of purchasing power parity ppp price indexes from the international comparison project global inequality increased with the latest revision of the icp and this reduced the global poverty line relative to the us dollar the recent large increase of nearly half a billion poor people came from an inappropriate updating of the global poverty line not from the icp revisions even so ppp comparisons between widely different countries rest on weak theoretical and empirical foundations i argue for wider use of self reports from international monitoring surveys and for a global poverty line that is truly denominated in us dollars

methods of household consumption measurement through surveys experimental results from tanzania consumption expenditure has long been the preferred measure of household living standards however accurate measurement is a challenge and household expenditure surveys vary widely across many dimensions including the level of reporting the length of the reference period and the degree of commodity detail these variations occur both across countries and also over time within countries there is little current understanding of the implications of such changes for spatially and temporally consistent measurement of household consumption and poverty a field experiment in tanzania tests eight alternative methods to measure household consumption on a sample of 4 000 households there are significant differences between consumption reported by the benchmark personal diary and other diary and recall formats under reporting is particularly relevant in illiterate households and for urban respondents completing household diaries recall modules measure lower consumption than a personal diary with larger gaps among poorer households and households with more adult members variations in reporting accuracy by household characteristics are also discussed and differences in measured poverty as a result of survey design are explored the study concludes with recommendations for methods of survey based consumption measurement in low income countries

a human development index by income groups summary one of the most frequent critiques of the hdi is that it does not take into account inequality within countries we suggest a methodology which allows to compute the three components and the overall hdi for quintiles of the income distribution this allows comparisons of the level in human development of the poor and non poor within and across countries an empirical illustration shows large discrepancies in human development within the countries especially in africa these discrepancies are lower the higher the hdi is but only weakly so inequality in income is generally higher than inequality in education and life expectancy

how fast did developing country poverty fall during the 1990s capabilities based tests of rival estimates abstract non nested hypothesis tests are used to rank eight widely used international per capita income and poverty measures with respect to how well they predict changes in capabilities lower child mortality higher enrollment rates better nutrition etc national accounts based generally out perform survey based growth and poverty estimates in these tests

mechanism design with incomplete information a solution to the implementation problem the main result of this paper is that the multiple equilibrium problem in mechanism design can be avoided in private value models if agents do not use weakly dominated strategies in equilibrium we show that in such settings any incentive compatible allocation can be made the unique equilibrium outcome to a mechanism we derive a general necessary condition for unique implementation which implies that the positive result for private value models applies with considerably less generality to common value settings and to situations in which an agent s information does not index the agent s preferences

has the world moved forward a robust multidimensional evaluation this paper presents a multidimensional normative framework to evaluate whether the world moved forward between 1980 and 2008 we focus on the robustness of the results when attributing different weights to the different dimensions population weighted international welfare has not worsened over this period however the trend in the underlying inequality is ambiguous once sufficient weight is given to longevity and or income c 2010 elsevier b v all rights reserved

international income inequality measuring ppp bias by estimating engel curves for food there are large differences between rich and poor people in the world this is of major concern to economists as well as to policy makers the magnitude of the dif ferences however depends on the measure used for comparisons to illustrate per capita income in china is more than five times larger if one uses penn world table pwt 1 incomes rather than exchange rate based ex incomes in this paper we study pwt incomes which aim at correcting for price level dif ferences across countries and identify the bias in them by estimating engel curves for food furthermore we study the relationship between the bias and the income of a country the pwt produces purchasing power parity ppp adjusted incomes and thus the associated bias is referred to as the ppp bias having estimated the bias in pwt incomes we provide new estimates of real income and refer to these as the engel curve ec incomes by comparing the estimated ec incomes and the pwt incomes the issue of how the bias influences estimated inequality is discussed finally we discuss whether ex incomes which simply transform each country s nominal income into one common currency provide better estimates of income than do pwt incomes this paper reports three main findings first there is substantial and systematic ppp bias in the pwt incomes the poorer the country the more its income tends to be overestimated 2 second the ppp bias causes a substantial and robust underesti mation of international inequality the gini index increases substantially when one adjusts for the bias third whereas pwt incomes provide better estimates than the ex incomes for the richer countries the ex incomes which implicitly assume that ppp holds provide better estimates for the poorer countries as we know that price levels differ across countries there is consensus that the seminal work on establishing the pwt was a well founded initiative and the data have been extensively used 3 still although many studies rely on pwt data few focus on the ppp bias in this dataset some contributors focus on one component of the bias however the so called substitution bias and use macro data to measure this

controlling for the underreporting of remittances empirical studies that use self reported data on remittances to measure the latter s impact on microeconomic incentives mostly ignore the potential errors associated with reporting measurement issues an econometric procedure to control for these errors is developed and applied to household level data from armenia we find evidence of systematic underreporting of remittances after controlling for this we find a strong negative impact of remittances on incentives to work

migration costs and observational returns to migration in the developing world recent studies find that observational returns to rural urban migration are near zero in three developing countries we revisit this result using panel tracking surveys from six countries finding higher returns on average we then interpret these returns in a multi region roy model with heterogeneity in migration costs in the model the observational return to migration confounds the urban premium and the individual benefits of migrants and is not directly informative about the welfare gain from lowering migration costs patterns of regional heterogeneity in returns and a comparison of experimental to observational returns are consistent with the model s predictions

measuring aggregate welfare in developing countries how well do national accounts and surveys agree in a data set for developing and transition economies the author finds that private consumption per capita based on national accounts deviates on average from mean household income or expenditure based on national sample surveys growth rates also differ systematically so that the ratio of the survey mean to the national accounts mean tends to fall over time but there are revealing exceptions to these general findings the aggregate difference in the levels is due more to income surveys than to expenditure surveys and there are strong regional effects for example the severe data problems in the transition economies of eastern europe and central asia means that there is negligible correlation in that region between growth rates from national accounts and those from household surveys

measuring global poverty why ppp methods matter abstract we present theory and evidence to suggest that in the context of analyzing global poverty the eks approach to estimating purchasing power parities yields more appropriate international comparison of real incomes than the geary khamis approach our analysis of the 1996 and 2005 international comparison project data confirms that the geary khamis approach substantially overstates the relative incomes of the world s poorest nations and this leads to misleading comparisons of poverty across regions and over time the eks index of real income is much closer to being a true index of economic welfare and is therefore preferred for assessment of global poverty

top incomes and the measurement of inequality in egypt by all accounts income inequality in egypt is low and had been declining during the decade that preceded the 2011 revolution as the egyptian revolution was partly motivated by claims of social injustice and inequalities this seems at odds with a low level of income inequality moreover while income inequality shows a decline between 2000 and 2009 the world values surveys indicate that the aversion to inequality has significantly increased during the same period and for all social groups this paper utilizes a range of recently developed statistical techniques to assess the true value of income inequality in the presence of a range of possible measurement issues related to top incomes including item and unit non response outliers and extreme observations and atypical top income distributions the analysis finds that correcting for unit non response significantly increases the estimate of inequality by just over 1 percentage point that the egyptian distribution of top incomes follows rather closely the pareto distribution and that the inverted pareto coefficient is located around median values when compared with 418 household surveys worldwide hence income inequality in egypt is confirmed to be low while the distribution of top incomes is not atypical compared with what pareto had predicted and compared with other countries in the world this would suggest that the increased frustration with income inequality voiced by egyptians and measured by the world values surveys is driven by factors other than income inequality

the cost of fear the welfare effect of the risk of violence in northern uganda although the effects of insecurity are believed to be important these have never been directly measured previous estimates of the costs of conflict have only captured the joint effect of violence and insecurity the distinction is important for understanding the origins of the costs and for policy design spatially disaggregated measures of insecurity are created based on the spatial temporal variation in the placement of violence these are used to generate the first estimates of the relative causal contributions of the risk and experience of violence the article also provides the first micro data based counterpart to the cross country literature on the costs of conflict

is globalization reducing poverty and inequality abstract over the past 20 years or so india china and the rest of east asia experienced fast economic growth and falls in the poverty rate latin america stagnated the former soviet union central and eastern europe and sub saharan africa regressed but what are the net trends the neoliberal argument says that world poverty and income inequality fell over the past two decades for the first time in more than a century and a half thanks to the rising density of economic integration across national borders the evidence therefore confirms that globalization in the context of the world economic regime in place since the end of bretton woods generates more mutual benefit than conflicting interests this paper questions the empirical basis of the neoliberal argument

poverty and distributional effects of a carbon tax in mexico abstract mexico recently declared ambitious goals in reducing domestic co2 emissions and introduced a carbon tax in 2014 although negative effects on household welfare and related poverty measures are widely discussed as possible consequences empirical evidence is missing we try to fill this gap by simulating an input output model coupled with household survey data to examine the welfare effects of different carbon tax rates over the income distribution the currently effective tax rate is small and has negligible effects on household welfare higher simulated tax rates maintaining the current tax base show a slight progressivity but welfare losses remain moderate welfare losses regressivity and poverty rise more with widening the tax base towards natural gas and the other greenhouse gases methane ch4 and nitrous oxide n2o mainly through food price increases for a complete analysis of the policy we simulate a redistribution of calculated tax revenues and find that the resulting effects become highly progressive also for high rates wider tax bases and even in the absence of perfect targeting of social welfare programs

the influence of macroeconomic factors on personal income distribution in developing countries a parametric modelling approach this article examines the influence of macroeconomic factors on personal income distribution in developing countries using a parametric modelling approach the technique is based on the selection and estimation of a theoretical parametric model a dagum distribution which fits accurately to the empirical income distributions of the countries examined the parameters of the model specifically related to inequality are subsequently used as dependent variables in econometric models in order to examine the impact that certain macroeconomic variables gdp growth inflation employment and real interest rates have on inequality the results reveal that gdp growth employment rate and real interest rate are the macroeconomic factors with greater impact in shaping personal income distribution in developing countries

measuring poverty in a growing world or measuring growth in a poor world the extent to which growth reduces global poverty has been disputed for 30 years although there are better data than ever before controversies are not resolved a major problem is that consumption measured from household surveys which is used to measure poverty grows less rapidly than consumption measured in national accounts in the world as a whole and in large countries particularly india china and the united states in consequence measured poverty has fallen less rapidly than appears warranted by measured growth in poor countries one plausible cause is that richer households are less likely to participate in surveys but growth in the national accounts is also upward biased and consumption in the national accounts contains large and rapidly growing items that are not consumed by the poor and not included in surveys so it is possible for consumption of the poor to grow less rapidly than national consumption without any increase in measured inequality current statistical procedures in poor

structural change and poverty in africa a decomposition anakysis for cote d ivoire abstract this paper provides evidence that economic destabilization and the absence of managed structural change in an economy can be more harmful to the welfare of the poor than the process of adjustment itself evidence comes from four consecutive years of household survey data from cote d ivoire spanning both a period of adjustment and destabilization these constitute a unique data base in africa to assess the impact of structural change on the poor the analytic methodology used is that of static and dynamic decomposition of poverty measures along policy relevant dimensions

growth still is good for the poor incomes in the poorest two quintiles on average increase at the same rate as overall average incomes this is because in a global dataset spanning 118 countries over the past four decades changes in the share of income of the poorest quintiles are generally small and uncorrelated with changes in average income the variation in changes in quintile shares is also small relative to the variation in growth in average incomes implying that the latter accounts for most of the variation in income growth in the poorest quintiles these findings hold across most regions and time periods and when conditioning on a variety of country level factors that may matter for growth and inequality changes this evidence confirms the central importance of economic growth for poverty reduction and illustrates the difficulty of identifying specific macroeconomic policies that are significantly associated with the relative growth rates of those in the poorest quintiles

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

critical factors for transforming creativity into sustainability abstract although creativity and sustainability have received considerable attention in the literature there is limited research considering both particularly in relation to co existing organizational factors which facilitate the transformation of creativity into sustainable products this paper explores this gap through an analysis of six case studies of commercial organizations presenting both successful and unsuccessful implementation of sustainable products services across types of firms and industries the research framework focuses on three general facets 1 leadership 2 boundaries where different aspects of internal and external firm s activities enable a diversity of opinions and stakeholder engagement and 3 economic alignment instrumentality in which the goal of wealth creation is present and supported by a firm s capabilities the main finding of the paper is that appropriate leadership along with effective boundary spanning and clear profit orientation are simultaneously necessary conditions for successful transformation of creative business ideas into successful sustainable products services by business organizations this implies a steep discounting of success prospects if any of the above factors is lacking the work contributes to the development of general theoretical frameworks and approaches for achieving organizational success based on co creating social and economic value at the same time

affluence and food a simple way to infer incomes accurate and timely measures of cross country real incomes are still a rarity as the share of expenditure devoted to food is readily available we use engel s law in reciprocal form to measure affluence analysis of real income data for over 100 countries indicates that this approach is viable to recognize the role of uncertainty in the analysis we present the results in the form of stochastic cross country income comparisons

overcoming barriers to innovation and diffusion of cleaner technologies some features of a sustainable innovation policy regime despite a deepening understanding of systems and processes by which the innovation and diffusion of cleaner technologies occurs relatively little attention has been given to the development of policy processes that reflect this deeper understanding a set of guiding principles for improving sustainable innovation policy processes has been formulated and disseminated by the authors and colleagues in research drawing on theoretical and empirical analysis including a case study of low carbon energy innovation in the uk and interactions with policy makers and other stakeholders through a series of workshops this paper elaborates on two of the guiding principles 1 stimulating the development of a sustainable innovation policy regime bringing together innovation and environmental policy regimes 2 applying systems thinking engaging with the complexity and systemic interactions of innovation systems and policy making processes to promote a transition to sustainability

top indian incomes 1922 2000 this article presents data on the evolution of top incomes and wages for 1922 2000 in india using individual tax return data the data show that the shares of the top 0 01 percent 0 1 percent and 1 percent in total income shrank substantially from the 1950s to the early to mid 1980s but then rose again so that today these shares are only slightly below what they were in the 1920s and 1930s this u shaped pattern is broadly consistent with the evolution of economic policy in india from the 1950s to the early to mid 1980s was a period of socialist policies in india whereas the subsequent period starting with the rise of rajiv gandhi saw a gradual shift toward more pro business policies although the initial share of the top income group was small the fact that the rich were getting richer had a nontrivial impact on the overall income distribution although the impact is not large enough to fully explain the gap observed during the 1990s between average consumption growths shown in national sample survey based data and the national accounts based data it is sufficiently large to explain a non negligible part of it

the contributions of angus deaton angus deaton was awarded the 2015 sveriges riksbank prize in economic sciences in memory of alfred nobel for his analysis of consumption poverty and welfare this article reviews his contributions to economics

a new data set measuring income inequality this article presents a new data set on inequality in the distribution of income the authors explain the criteria they applied in selecting data on gini coefficients and on individual quintile groups income shares comparison of the new data set with existing compilations reveals that the data assembled here represent an improvement in quality and a significant expansion in coverage although differences in the definition of the underlying data might still affect inter temporal and international comparability based on this new data set the authors do not find a systematic link between growth and changes in aggregate inequality they do find a strong positive relationship between growth and reduction of poverty

early childhood nutrition and academic achievement a longitudinal analysis abstract many policymakers propose early childhood nutrition programs as a way to increase students academic achievement this paper investigates the nutrition learning nexus using a unique longitudinal data set that follows a large sample of filipino children from birth until the end of their primary education we find that better nourished children perform significantly better in school partly because they enter school earlier and thus have more time to learn but mostly because of greater learning productivity per year of schooling our cost benefit analysis suggests that a dollar invested in an early childhood nutrition program in a developing country could potentially return at least three dollars worth of gains in academic achievement and perhaps much more

household behaviour in times of political change evidence from egypt abstract using representative household survey data we study the short term effects of the 2011 egyptian uprisings on household behaviour in terms of education and health expenditure as well as savings we construct a measure of political instability by analysing the number of fatalities during political protests throughout the country difference in difference estimations show that affected households increased spending on education especially on their sons higher education the increase in education expenditure is particularly prominent in areas where households were in favour of a regime change we argue that after the fall of mubarak those households had a positive outlook towards the future with better labour market prospects and therefore invested more in their sons education at the same time households decreased spending on health and increased savings which can be interpreted as precautionary behaviour our results are robust to placebo tests excluding cairo spillovers and alternative ways of measuring political instability

economic growth size of the agricultural sector and urbanization in africa this paper uses variations in international commodity prices and rainfall to construct instrumental variables estimates of the within country effect that changes in the size of the agricultural sector and gdp per capita growth have on the urbanization rate for a panel of 41 african countries during the period 1960 2007 the paper s three main findings are that i decreases in the share of agricultural value added lead to a significant increase in the urbanization rate ii conditional on changes in the share of agricultural value added gdp per capita growth does not significantly affect the urbanization rate iii increases in the urbanization rate had a significant negative average effect on gdp per capita growth

estimating the elderly s returns on the farm evidence from cote d ivoire abstract it is often said that the elderly in rural developing countries are more valued by the members of the society one possible economic reason for the relative status of the elderly in rural areas is that they are likely to have accumulated substantial farm specific capital thus increasing the productivity of the farm this paper examines whether the elderly contribute to the agricultural profits of households in rural cote d ivoire in an uncertain environment we estimate the returns to having elders on the farm using panel data and find that farm specific experience mitigates the fall in profits in adverse environmental conditions particularly at the lower end of the profit distribution thereby contributing to reduce the variance of profits the results hold even after controlling for the level of household assets and household fixed effects and the presence of experienced female members

a note on feasible implementations abstract this paper is concerned with the problem of individually feasible outcomes in decentralized allocation mechanisms we consider a well known mechanism which achieves efficient allocations in equilibrium this mechanism however may leave agents bankrupt if they fail to reach equilibrium it is shown that the bankruptcy problem can be avoided if a voting stage is added to the original mechanism

the long run educational cost of world war ii an important component of the long run cost of a war is the loss of human capital suffered by school age children who receive less education austrian and german individuals who were 10 years old during the conflict or were more directly involved through their parents received less education than comparable individuals from nonwar countries such as switzerland and sweden we also show that these individuals experienced a sizable earnings loss some 40 years after the war which can be attributed to the educational loss caused by the conflict the implied consequences in terms of gross domestic product loss are calculated

growth inequality and poverty looking beyond averages the evidence is compelling that the poor in developing countries do typically share in the gains from rising aggregate affluence and in the losses from aggregate contraction but how much do poor people share in growth do they gain more in some settings than others do some gain while others lose does pro poor growth mean more or less aggregate growth recent theories and evidence suggest some answers but deeper microeconomic empirical work is needed on growth and distributed change only then will we have a firm basis for identifying the specific policies and programs needed to complement and possibly modify growth oriented policies

measuring and understanding behavior welfare and poverty angus deaton delivered his prize lecture on tuesday 8 december 2015 at the aula magna stockholm university these are the lecture slides this abstract was borrowed from another version of this item

welfare impact of higher maize prices when allowing for heterogeneous price increases in this paper we explore the short term welfare impact of higher maize prices on different regions and socioeconomic groups in kenya we find that approximately 80 of the population would be negatively affected by higher maize prices and that poor households would lose a larger proportion of their welfare than wealthy households more specifically rural landless households would lose the most whereas households with landholdings of five acres or more would gain we simulate a 25 increase in maize prices and find that rural poverty would increase by approximately 1 percentage point and urban poverty by 0 5 percentage points moreover the impact differs among regions poverty would increase by 3 percentage points in the rural parts of coast province whereas it would be almost unchanged in the rural parts of western province furthermore we relax the standard assumption that consumer and producer prices change in the same proportions and allow for heterogeneity in marketing margins among districts we demonstrate that relaxing this assumption substantially affects the results and that the results from previous research were thus likely biased

child health and conflict in cote d ivoire we examine the impact of the 2002 07 civil conflict in cote d ivoire on children s health status measured by height for age we use pre and post war survey data coupled with information on the location of violent incidents to capture exposure to the conflict of children born during 1997 2007 our results indicate that children from regions more affected by the conflict suffered significant health setbacks compared with children from less affected regions further household level victimization such as war related economic stress health stress and displacement has a large and negative effect on child health in conflict affected regions

global poverty estimates a sensitivity analysis summary current estimates of global poverty vary substantially across studies we undertake a sensitivity analysis to highlight the importance of methodological choices by measuring global poverty using different data sources parametric and nonparametric estimation methods and multiple poverty lines our results indicate that estimates of global poverty vary significantly when they are based alternately on data from household surveys versus national accounts but are relatively consistent across estimation methods the decline in poverty over the past decade is found to be robust across methodological choices

correcting for sampling bias in the measurement of welfare and poverty in the cote d ivoire living standards survey the sampling aspects of a household data set are important to analysts the early years of the cote d ivoire standards survey cilss had a sampling bias which seriously affected estimates of population statistics such as household size the bias arose from sampling procedures that overrepresented larger dwellings assuming that samples drawn in later years were unbiased a correction procedure is applied that uses weights based on household size results from the weighted data are then compared with the unweighted findings to assess the seriousness of the bias estimates of household expenditure per capita in the early years of the survey are found to be significantly underestimated resulting in an overestimation of poverty the sampling bias also resulted in an underestimation of the upward trend in poverty during 1985 88 the cilss has been a popular and fruitful data set for policy analysis these findings however cast doubt on the robustness of earlier work thus the effort to trace sampling information is particularly worthwhile for policy oriented applied research

estimating the scale and geography of global poverty now and in the future how much difference do method and assumptions make summary estimates of the historic and future scale and location or geography of global poverty by income expenditure have a long and contentious history in recent projections made on global poverty methods and assumptions vary so widely it is impossible to compare studies in a systematic way even on their estimates of current poverty in light of this we discuss the methodological issues arising and use a custom built model to provide a new consistent set of long run estimates of global poverty to show the impact of different methods and assumptions on the scale and location of global poverty

subgame perfect implementation this paper examines the use of stage mechanisms in implementation problems and provides a partial characterization of the set of subgam e perfect implementable choice rules it is shown that in many economic environments virtually an y choice rule can be implemented to illustrate the power of this approach the paper discusses a number of models in which it is possible to implement the first best although it wouldn t have been possible to do so without using stage mechanisms the diversity of these models suggests that subgame perfect implementation may find wide application copyright 1988 by the econometric society

war and local collective action in sierra leone abstract we study the brutal 1991 2002 sierra leone civil war using nationally representative household data on conflict experiences postwar economic outcomes local politics and collective action individuals whose households directly experienced more intense war violence are robustly more likely to attend community meetings more likely to join local political and community groups and more likely to vote tests using prewar controls and alternative samples suggest that selection into victimization is unlikely to be driving the results more speculatively the findings could help partially explain the rapid postwar political and economic recoveries observed in sierra leone and after several other recent african civil wars

risk and insurance in village india comment the protection of poor households in high risk agrarian economies from shocks to their incomes has often been seen as a compelling motive for various forms of policy intervention including transfers of cash or food credit subsidies and public employment schemes for a survey see lipton and ravallion 1995 the desirability of such safety net policies clearly depends on how well pre existing risk sharing arrangements work while it is commonly thought that without effective policy intervention rural households are vulnerable to village wide shocks such as adverse prices or poor rains it is less clear to what extent risk sharing institutions within the village mitigate the effects of idiosyncratic income risk stemming for instance from ill health or localized crop damage 2 several recent papers have used household level data to implement tests of risk sharing that might inform such concerns 3 these tests are based on the proposition that with perfect risk sharing consumption at the household level should be insured against idiosyncratic risks and thus depend solely on the realization of the aggregate risk wilson 1968 diamond 1967 townsend 1994 tests this implication of perfect intra village risk sharing using longitudinal household data on consumptions and incomes for three villages in india he reports that the full insurance hypothesis provides a surprisingly good benchmark in that household consumptions co move and do not appear to be much influenced by contemporaneous own income our aim here is to examine the robustness of this potentially important finding we have two main concerns the first is that the specification townsend adopts potentially biases his test towards the null hypothesis of full insurance because it yields inconsistent estimates of the key test parameter under a plausible alternative we therefore estimate a different specification that generates consistent estimates under both the null and the alternative our second concern is that a particular form of measurement error in the consumption data townsend uses may have further biased his results toward the null hypothesis of full insurance to address this concern we use an instrumental variables procedure when we implement the test of consumption insurance with townsend s consumption data we also re estimate the test equations with a measure of consumption derived from the same underlying primary data by an alternate method finally townsend reports 1discussions with robert townsend stimulated our interest in this investigation the staff of the

why is income inequality so low in china compared to other countries the effect of household survey methods many studies suggest that income inequality in china is comparatively low but if income inequality in urban china was measured using monthly income as in many other countries it would be from 17 to 69 higher depending on the inequality measure used 2001 elsevier science b v all rights reserved

quantifying the microeconomic effects of war using panel data evidence from nepal summary the extensive coverage of household surveys in conflict regions in recent decades has fueled a growing literature on the microeconomic effects of war in this paper we use a unique panel dataset to quantify the impact of the nepalese civil conflict on schooling attainment given longitudinal data we are able to directly estimate unobserved individual heterogeneity and thus address selective wartime displacement despite the widely held view that war is detrimental to human capital formation we find no effect of war intensity on schooling attainment once unobserved individual heterogeneity is accounted for we draw on supplementary data to explain our findings

health nutrition and economic development the relationship between health and economic development is explored focusing on nutrition based health indicators the spotlight is placed on the inter related feedbacks between the influence of health on productivity on one hand and the influence of income on health status on the other disentangling causality in these relationships has preoccupied much of the literature we evaluate different empirical strategies that have been adopted and assess the results there is now a body of evidence based on careful empirical studies that demonstrates a causal relationship between health and labor productivity there is also evidence that at least among the very poor additional income is spent on improved nutrition there are two issues that have received little attention although we argue they are likely to be very important first measurement of health is discussed in detail evidence is presented on how taking into account differences in the extent of measurement error is critical for interpreting the impact of health on wages the same theme emerges in studies of the effect of income on health specifically calorie intake the key role of non linearities in these relationships is highlighted and we demonstrate that a good deal of the variation in estimates of income elasticities of demand for calories can be ascribed to the role of measurement and functional form authors

explaining the evolution of poverty the case of mozambique we provide a comprehensive approach for analyzing the evolution of poverty using mozambique as a case study bringing together data from disparate sources we develop a novel back casting framework that links a dynamic computable general equilibrium model to a micro simulation poverty module this framework provides a new approach to explaining and decomposing the evolution of poverty as well as to examining rigorously the coherence between poverty economic growth and inequality outcomes finally various simple but useful and rarely applied approaches to considering regional changes in poverty rates are presented copyright 2012 oxford university press

have business cycles changed over the last two decades an empirical investigation abstract we document the properties of business cycles of 71 countries 23 industrial countries and 48 emerging market economies or emes from 1970q1 to 2012q4 using the harding and pagan dating algorithm first recessions are deeper steeper and costlier among emes especially in east asia and latin america second recoveries are swifter and stronger among emes partly due to stronger rebound effects third recessions became less costly during the globalization period 1985 2007 for industrial countries and emes thus reflecting institutional changes made during the great moderation fourth the dynamic behavior of macroeconomic indicators around peaks in real gdp is more volatile in downturns associated with crisis compared to other downturns fifth peaks in financial cycles credit and asset prices tend to precede peaks in real output cycles finally although both industrial and emerging markets have experienced deep recessions during the recent global financial crisis the emerging markets have recovered faster

sustainable innovations in the corporate sector the empirical evidence from ibex 35 firms abstract sustainable innovation practices those which simultaneously contribute to environmental social and economic value creation have drawn increased attention from academics industry leaders and policy makers around the globe there is a general agreement that innovation is a very important part of the puzzle in achieving long term sustainability thus a critical question to be answered is what factors actually differentiate and appear to contribute to sustainable innovations si at the firm level this paper addresses the question by examining empirical evidence from the ibex 35 companies from the years 2010 2015 our results obtained from multivariate regression model indicate that the intensity of a firm s si activity is strongly and statistically significantly associated with the sector in which a given firm operates with a rising level of environmental footprint acting as a stimulant for innovation additionally firms characterized by higher net profit margins and returns on equity were also much more likely to introduce sis the findings also suggest that factors like size and age of a given company as well as level of competition in a sector in which it operates are not significant predictors for the implementation of sustainable innovations overall this study contributes to our understanding of the main characteristics of companies active in the area of si

the lucky few amidst economic decline distributional change in cote d ivoire as seen through panel data sets 1985 88 this article is an exploratory exercise in using panel data sets to investigate distributional change in cote d ivoire during the second half of the 1980s the panels made it possible to highlight and quantify mobility of the same households across poverty classes over time we found that there were a lucky few who improved their standard of living amid general decline detailed investigations revealed that the lucky few were fairly numerous and the probability of escaping poverty was quite high even for the very poorest these lucky few were widespread regionally although in some socio economic groupings the poor had higher chances of escaping poverty

world welfare is rising estimation using nonparametric bounds on welfare measures abstract i take a new approach to measuring world inequality and welfare over time by constructing robust bounds for these series instead of imposing parametric assumptions to compute point estimates i derive sharp bounds on the atkinson inequality index that are valid for any underlying distribution of income conditional on given fractile shares and gini coefficients while the bounds are too wide to reject the hypothesis that world inequality may have risen i show that world welfare rose unambiguously between 1970 and 2006 this conclusion is valid for alternative methods of dealing with countries and years with missing surveys alternative survey harmonization procedures alternative gdp series or if the inequality surveys used systematically underreport the income of the very rich or suffer from nonresponse bias

calories and poverty during a prolonged crisis abstract we study how calorie intake changes during prolonged crises by studying the calorie intake of households when exposed to short term and long term income and price shocks we use data from household surveys of mexican households during the income and price crises periods of 1994 to 1998 and 2006 to 2010 our focus is on low income mexican households those with the lowest 25 of expenditure per capita there is little effect on calorie intake following an income decline in the short run once households are exposed to reduced incomes for a longer period calorie intake falls households are able to weather short term fluctuations in income by shifting consumption to food items that are cheaper per calorie such as staple foods by consuming more foods at home instead of outside the home and by postponing expenditures on durable and semi durable goods when exposed to the income shock over a longer period of time we posit that households are not able to defer durable and semi durable purchases any more so their calorie consumption drops our results suggest that mexican households may be able to sustain calorie intake when faced with an income shock but it is less likely that they are able to do so if the income shock persists the government may want to support poor constituents when they are faced with prolonged crises

dollar a day revisited the article presents the first major update of the international 1 a day poverty line proposed in world development report 1990 poverty for measuring absolute poverty by the standards of the world s poorest countries in a new and more representative data set of national poverty lines a marked economic gradient emerges only when consumption per person is above about 2 00 a day at 2005 purchasing power parity below this the average poverty line is 1 25 which is proposed as the new international poverty line the article tests the robustness of this line to alternative estimation methods and explains how it differs from the old 1 a day line

what can new survey data tell us about recent changes in distribution and poverty it has been claimed that in recent times the poor have lost ground both relatively and absolutely even when average levels of living have risen this article tests that claim using household surveys for 67 developing and transitional economies over 1981 94 it finds that changes in inequality and polarization were uncorrelated with changes in average living standards distribution improved as often as it worsened in growing economies and negative growth was often more detrimental to distribution than positive growth overall there was a small decrease in absolute poverty although with diverse experiences across regions and countries almost always poverty fell with growth in average living standards and rose with contraction

factor shares the principal problem of political economy this paper identifies three reasons for studying factor shares to make a link between incomes at the macroeconomic level national accounts and incomes at the level of the household to help understand inequality in the personal distribution of income and to address the concern of social justice with the fairness of different sources of income in each case i explore the implications and point to ways in which the analysis could be taken forward in a twenty first century treatment of the classical problem of political economy

population size and civil conflict risk is there a causal link does an expansion of the population size expose nation states to a higher risk of suffering from civil conflict obtaining empirical evidence for a causal relationship is difficult due to reverse effects and omitted variable bias this article addresses causality issues by using randomly occurring drought as an instrumental variable to generate exogenous variation in population size for a panel of 37 sub saharan countries over the period 1981 2004 instrumental variable estimates yield that a 5 increase in population size raises the risk of civil conflict by around six percentage points

distributional national accounts methods and estimates for the united states this article combines tax survey and national accounts data to estimate the distribution of national income in the united states since 1913 our distributional national accounts capture 100 of national income allowing us to compute growth rates for each quantile of the income distribution consistent with macroeconomic growth we estimate the distribution of both pretax and posttax income making it possible to provide a comprehensive view of how government redistribution affects inequality average pretax real national income per adult has increased 60 from 1980 to 2014 but we find that it has stagnated for the bottom 50 of the distribution at about 16 000 a year the pretax income of the middle class adults between the median and the 90th percentile has grown 40 since 1980 faster than what tax and survey data suggest due in particular to the rise of tax exempt fringe benefits income has boomed at the top the upsurge of top incomes was first a labor income phenomenon but has mostly been a capital income phenomenon since 2000 the government has offset only a small fraction of the increase in inequality the reduction of the gender gap in earnings has mitigated the increase in inequality among adults but the share of women falls steeply as one moves up the labor income distribution and is only 11 in the top 0 1 in 2014

recovering comparable poverty estimates in cote d ivoire recent studies on cote d ivoire show a four fold increase in poverty rates between 1985 and 2008 however multiple revisions in the survey design questions the validity of the ivorian poverty trend in this paper we follow two simple steps to recover the comparable poverty trend first we construct a common consumption basket over time second we follow a two stage method of moments framework tarozzi 2007 to re estimate poverty headcounts on average the adjusted trend shows a two percentage point difference in poverty rates from 1985 to 2008 a number of robustness checks provide robust support to this revised poverty trend

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

civil war crop failure and child stunting in rwanda economic shocks at birth have lasting effects on children s health several years after the shock the authors calculate height for age z scores for children under age five using data from a rwandan nationally representative household survey conducted in 1992 they exploit district and time variation in crop failure and civil conflict to measure the impact of exogenous shocks that children experience at birth on their height several years later they find that boys and girls born after the shock in regions experiencing civil conflict are both negatively affected with height for age z scores 0 30 and 0 72 standard deviations lower respectively conversely only girls are negatively affected by crop failure with these girls exhibiting 0 41 standard deviation lower height for age z scores and the impact is worse for girls in poor households results are robust to using sibling difference estimators household level production and rainfall shocks as alternative measures of crop failure

exchange rates productivity poverty and inequality this article analyses differences in the wealth of nations by comparing ppp based cross country incomes from the penn world table with those derived from prevailing exchange rates using the balassa 1964 samuelson 1964 productivity bias framework we introduce the international poverty line and illustrate the implications for cross country income inequality we demonstrate that our results are not inconsistent with the previous literature when appropriately interpreted

poverty and growth in india over six decades we study the evolution of consumption poverty measures for post independence india including 20 years since extensive economic reforms began in 1991 progress against poverty was negligible until the mid 1970s after which a downward trend in poverty measures emerged the pace of poverty reduction accelerated in the post reform period despite rising inequality amidst faster growth a key finding is that the relationship to the pattern of growth changed greatly suggesting stronger intersectoral linkages with urban consumption growth benefiting both the rural and urban poor in contrast to the pre reform period growth in primary secondary and tertiary sector outputs yielded similar impacts on poverty

the consequences of child soldiering abstract little is known about the impacts of military service on human capital and labor market outcomes due to an absence of data as well as sample selection recruits are self selected screened and selectively survive we examine the case of uganda where rebel recruitment methods provide exogenous variation in conscription economic and educational impacts are widespread and persistent schooling falls by nearly a year skilled employment halves and earnings drop by a third military service seems to be a poor substitute for schooling psychological distress is evident among those exposed to severe war violence and is not limited to ex combatants

inequality among world citizens 1820 1992 this paper investigates the distribution of well being among world citizens during the last two centuries the estimates show that inequality of world distribution of income worsened from the beginning of the 19th century to world war ii and after that seems to have stabilized or to have grown more slowly in the early 19th century most inequality was due to differences within countries later it was due to differences between countries inequality in longevity also increased during the 19th century but then was reversed in the second half of the 20th century perhaps mitigating the failure of income inequality to improve in the last decades jel d31 f0 n0 o0