A SHAPLEY DECOMPOSITION OF MULTIDIMENSIONAL CHRONIC POVERTY IN ARGENTINA

This paper proposes a Shapley decomposition to analyse the evolution of chronic poverty in a multivariate setting using a chronic poverty measure proposed by Alkire and colleagues. The decomposition makes possible to assess a vast array of information to find the drivers of change in chronic poverty, and could be a valuable tool in the way public policy programmes focus resources. We present an empirical application of the changes in chronic poverty in Argentina during the period 2004–12 using the Permanent Household Survey. We found that households with older adults show great persistence of multidimensional chronic poverty in time while the employment indicators is found to be an important driver of the intensity of chronic poverty.     

MONITORING ABSOLUTE AND RELATIVE POVERTY: “NOT ENOUGH” IS NOT THE SAME AS “MUCH LESS”

Financial poverty indicators assess which people have few financial resources and are thereby at risk of having an unacceptably low living standard. Most countries use one or several “official” poverty indicators, but they typically use either an absolute or a relative benchmark to determine what is unacceptable; absolute benchmarks are based on basic needs or rights while relative benchmarks depend on what is considered to be a “normal” living standard. Applying the absolute U.S. and the relative EU poverty indicators on the U.S. and 15 EU member states, this research shows that it makes sense to use both benchmarks.     

More Relatively‐Poor People in a Less Absolutely‐Poor World

Relative deprivation, shame, and social exclusion can matter to the welfare of people everywhere. The paper argues that such social effects on welfare call for a reconsideration of how we assess global poverty. We argue for using a weakly‐relative measure as the upper‐bound complement to the lower‐bound provided by a standard absolute measure. New estimates of poverty are presented. The absolute line is $1.25 a day at 2005 prices, while the relative line rises with the mean, at a gradient of 1:2 above $1.25 a day, consistently with national poverty lines. We find that the incidence of both absolute and weakly‐relative poverty in the developing world has been falling since the 1990s, but more slowly for the relative measure. While the number of absolutely poor has fallen, the number of relatively poor has changed little since the 1990s, and is higher in 2008 than 1981.     

THE IMPORTANCE OF CONSECUTIVE SPELLS OF POVERTY: A PATH‐DEPENDENT INDEX OF LONGITUDINAL POVERTY

In this paper we propose a new index of individual poverty in the longitudinal perspective, taking into account the way poverty and non‐poverty spells follow one another along individual life courses. The Poverty Persistence Index (PPI) is based on all the pairwise distances between the waves of poverty. The PPI is normalized and it assigns a higher degree of (longitudinal) poverty to people who experience poverty in consecutive, rather than separated, periods, for whom the distances from the poverty line are larger along time and moreover, when the worst years are consecutive and/or recent. We also propose an aggregate index of persistence in poverty (APPI) in order to measure the distribution of the persistence of poverty in a society, and evaluate at once the diffusion of poverty, its depth, duration, and recentness. The indices are tested in comparison with other measures from the literature both at the individual as well as at the societal level.     

Decomposing Vulnerability to Poverty

This paper applies the decomposition of the Foster–Greer–Thorbecke poverty index to the measurement of individual vulnerability to poverty. I highlight that poverty risk can be expressed as a function of expected incidence, expected intensity, and expected variability below the poverty line, three essential aspects for improving the design of appropriate risk‐management policies. An empirical illustration is provided using the British Household Panel Survey and the Italian Survey on Household Income and Wealth.     

Poverty is a Public Bad: Panel Evidence From Subjective Well‐Being Data

Previous research has found that subjective well‐being (SWB) is lower for individuals classified as being in poverty. We extend the poverty‐SWB literature by focusing on aggregate poverty. Using panel data for 39,239 individuals living in Germany from 2005–2013, we show that people's SWB is negatively correlated with the regional (state‐level) poverty ratio while controlling for individual poverty status and poverty intensity. This suggests that poverty is a public bad. The negative relationship between aggregate poverty and SWB is more salient in the upper segments of the income distribution and is robust to controlling for the rate of unemployment and per capita GDP. The character of poverty as a public bad suggests that poverty alleviation is a matter not only of distributive justice, but of allocative efficiency.     

Differentiating Between Dimensionality and Duration in Multidimensional Measures of Poverty: Methodology with an Application to China

We develop a multidimensional poverty measure that is sensitive to the within‐individual distribution of deprivations across dimensions and time. Our measure combines features from a static multidimensional measure (Alkire and Foster, 2011a ) and a time‐dependent unidimensional measure (Foster, 2009 ). The proposed measure separately identifies—and can therefore be decomposed according to—the proportion of the poverty score attributable to: (i) the concentration of deprivations within periods; (ii) the concentration of deprivations within dimensions. In doing so it allows for a poverty ranking that is robust to assumptions about the trade‐off between the two components. Previous measures have not allowed for the features proposed here due to the inability to calculate the exact contribution of each dimension to overall poverty. We overcome this by adapting to our measure the Shapley decomposition proposed in Shorrocks ( 2013 ) (based on Shapley, 1953 ). The measure is applied to data from China, 2000‐2011.     

Poverty dynamics in rural China revisited: do assets matter?

This paper uses an asset-based approach to examine poverty dynamics in rural China over the period 1989–2006. The analysis documents a significant structural component in the poverty dynamics of households. The lack of profitable agricultural asset accumulation plays an unneglectable role in causing households to be trapped in persistent poverty. The escape from poverty is increasingly dominated by stochastic upward mobility rather than by structural movement in terms of asset accumulation. This could threaten the prospect of poverty reduction in rural China. It is argued that future reform and policy-making should pay more attention to building households’ asset base.     

Poverty Dynamics in Turkey

This paper examines poverty dynamics in Turkey using a nationally representative panel data covering the 2005–08 period. The aim is to understand mobility in and out of poverty and its correlates. We find that almost a quarter of the poor are persistently poor. The conditional and unconditional exit rates that we estimate are within the range of values reported for developed countries in the literature. That the income events—but not transfers—dominate both poverty entries and exits is indicative of the major role labor markets play in the lives of the poor. In particular, we argue that given the characteristics of the poor and modest levels of social assistance, the reason for mobility rates close to European averages must be sought in the informal economy.     

中国多维贫困的动态测算、结构分解与精准扶贫

贫困的多维福利剥夺程度高低和持续时间长短是近年来理论界关注的焦点,也是政府制定精准扶贫政策的重要理论依据.文章综合Alkire和Foster(2011)提出的多维贫困测算方法和Foster(2009)提出的长期贫困测算方法,构建了长期多维贫困指数和暂时多维贫困指数,实证分析了中国的贫困状况,并进行了城乡分解、指标分解和区域分解.结果发现:第一,样本家庭在多维视角下的长期贫困比例要高于暂时贫困,这与单一地从收入角度来分析长期贫困和暂时贫困的结论恰好相反;第二,对于所有类型的贫困而言,教育年限、医疗保险和健康的贡献度都排在前三位,但健康对于长期贫困人口的贡献度要明显高于暂时贫困;第三,总体看来,农村的多维贫困程度不仅高于城市,而且很多指标的贫困持续时间也要高于城市;第四,从四大区域看,经济发展水平较低的中西部地区,长期多维贫困程度要高于东部和东北部地区.     

Imputing rent in consumption measures,with an application to consumption poverty in Canada, 1997–2009

We consider two econometric problems in the measurement of poverty, both relating to rent imputation. First, we account for quality differences correlated with selection into owner‐occupied versus rental tenure. This correction increases estimated household consumption by 5% over uncorrected estimates and decreases estimated poverty rates quite dramatically. Second, we propose that measurement error induced by the imputation be corrected by imputing a consumption distribution, rather than a consumption level, for each household. This correction increases estimated poverty rates slightly. We use our methods to measure consumption poverty in Canada, and find that the imputation strategy used influences the patterns observed. For example, measured poverty among the elderly barely declines when one uses our methods, in contrast to the almost 6 percentage point reduction we find using traditional methods. In our assessment of the over‐time evolution of consumption poverty, we find that substantial progress has been made on overall poverty and on child poverty, but that poverty among the elderly hardly changed.     

Linkages between poverty and income inequality of urban–rural sector: a time series analysis of India’s urban-based aspirations from 1951 to 1994

This study examines the impact of urban and rural development on poverty and inequality in India before economic reform. The methodology comprises two dimensions. Modern time series methods are used to uncover the dynamic patterns of urban–rural poverty and income inequality. A machine-learning algorithm is used to determine the causal structure among the development indicators. Our results show that reductions in rural poverty appear to be a more effective in reducing both urban and rural poverty, although the costs of achieving these reductions have not been considered.     

MEASURING POVERTY ACCOUNTING FOR TIME

In this paper we make a methodological proposal to measure poverty accounting for time by proposing a new family of intertemporal poverty indexes that aims at reconciling the way poverty is measured in a static and a dynamic framework. Our index is able to consider the duration of the poverty spell and the social preference for equality in well‐being given that, in contrast with others that have been previously proposed, it is sensitive to the level of inequality between individual complete poverty experiences over time. Moreover, other indices in the literature can be interpreted as special cases of our more general measure. An empirical illustration shows the relevance of considering the distribution of poverty experiences among the population in an international analysis.     

The National Wealth–Income Ratio in Greece, 1974–2013

Can the rise of wealth–income ratios observed in rich economies be found in the case of Greece as well? This paper uses a generalization of a two‐good wealth accumulation equation to estimate the evolution of the national wealth–income ratio, and finds that, similarly to the European evidence, the ratio rises from about 280 percent in the 1970s to about 500 percent on the eve of the current financial crisis. On average, during 1974–96, the saving‐induced wealth growth cancels out the capital losses, whereas in the subsequent decade, 1997–2007, the balance changes considerably when the saving effect vanishes and the prolonged capital gains result in a rising wealth–income ratio. During the recession, income falls faster than wealth. The results remain robust to several alterations of the benchmark framework.     

Understanding Rising Income Inequality in Germany, 1999/2000–2005/2006

We examine the factors behind rising income inequality in Europe's most populous economy. From 1999/2000 to 2005/2006, Germany experienced an unprecedented rise in net equivalized income inequality and poverty. At the same time, unemployment rose to record levels, part‐time and marginal part‐time work grew, and there was evidence for a widening distribution of labor incomes. Other factors that possibly contributed to the rise in income inequality were changes in the tax and transfer system, changes in the household structure (in particular the rising share of single parent households), and changes in other socio‐economic characteristics (e.g., age or education). We address the question of which factors were the main drivers of the observed inequality increase. Our results suggest that the largest part of the increase was due to increasing inequality in labor incomes, but that changes in employment outcomes and changes in the tax system also contributed considerable shares. By contrast, changes in household structures and household characteristics, as well as changes in the transfer system only seem to have played a minor role.     

The impact of work and non‐work migration on household welfare,poverty and inequality

This article estimates the impact of work migration and non‐work migration on per capita income, per capita expenditures, poverty and inequality in Vietnam using data from the two most recent Vietnam Household and Living Standard Surveys. We find that both work migration and non‐work migration have a positive impact on per capita expenditures of migrant‐sending households. Non‐work migration significantly decreases the incidence, depth and severity of national poverty. The effect of work migration on poverty is much smaller. Still, while work migration does not lift people out of poverty, it makes their poverty less severe. In addition, both work migration and non‐work migration decrease inequality, albeit only very slightly.     

A NON‐PARAMETRIC MEASURE OF POVERTY ELASTICITY

We estimate the growth elasticity of poverty (GEP) using recently developed non‐parametric panel methods and the most up‐to‐date and extensive poverty data from the World Bank, which exceeds 500 observations in size and represents more than 96 percent of the developing world's population. Unlike previous studies which rely on parametric models, we employ a non‐parametric approach which captures the non‐linearity in the relationship between growth, inequality, and poverty. We find that the growth elasticity of poverty is higher for countries with fairly equal income distributions, and declines in nations with greater income disparities. Moreover, when controlling for differences in estimation technique, we find that the reported values of the GEP in the literature (based on the World Bank's now‐defunct 1993‐PPP based poverty data) are systematically larger in magnitude than estimates based on the latest 2005‐PPP based data.     

Gross Capital Formation,Institutions and Poverty in Sub-Saharan Africa

The conventional wisdom is that rapid economic growth is driven by investment. Paying particular attention to the state of gross fixed capital formation (gfcf), poverty and institutions in sub-Saharan Africa, this paper investigates the effect of gfcf on poverty and explores whether the gfcf and poverty relationship can be strengthened by institutions. Using the panel data-set of 41 sub-Saharan African countries over the period 1981–2010 and dynamic two-step system generalised method of moment estimator, it is found that gfcf reduces poverty and institutions reinforce the gfcf and poverty link.     

贫困线研究综述

本文对当前贫困问题研究所采用的贫困线指标的制定方法进行了系统梳理,以促进我国贫困问题研究的进一步完善。本文依次对绝对贫困线、相对贫困线、主观贫困线以及其他贫困线指标进行了研究,最终得出在贫困研究中适宜采用相对贫困线指标的结论。     

中国农村居民贫困测度研究——基于山西的调查分析

运用Atkinson（1987）单维贫困测量与Alkire和Foster（2008）多维贫困测量相结合的方法,对山西农村居民贫困情况进行了测度。实证结果表明：从单维视角看,山西农村贫困主要体现在饮用水、消费、收入三个方面,全省三个主要贫困区存在差异;从多维视角来看,山西省农村居民存在多维贫困现象,考虑的贫困维度越多,贫困程度越严重。东部太行山区与北部高寒冷凉区的饮用水问题也比较严重,北部高寒冷凉区相比其他两个地区其教育问题较为突出,北部高寒冷凉区与西部吕梁山区的住房问题也需要关注。因此,山西今后要从多维度识别和瞄准贫困,针对地区贫困特点予以扶持。