Drawing the Poverty Line: Do Regional Thresholds and Prices Make a Difference?
Drawing the Poverty Line: Do Regional Thresholds and Prices Make a Difference?
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绘制贫困线：地区门槛和价格有影响吗？
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Jesús Pérez
中科院分区：
文献类型：
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作者：
Luis Ayala;A. Jurado;Jesús Pérez
脱贫项目的成效取决于它们是否能提高贫困户的收入。这涉及到对贫穷的适当衡量和确定贫困线的适当办法。本文分析了贫困指标对通过空间价格差异调整国家界线的其他方式的敏感度。首先，我们分析了从国家贫困线转移到区域贫困线对贫困发生率和贫困强度的影响。其次，我们展示了贫困模式如何随着贫困门槛的不同定义而变化。使用来自西班牙所有地区的数据，我们的结果显示，地区的贫困水平随着每个门槛的变化而变化，地区的排序并不是对贫困线的选择保持稳健。我们还表明，在使用特定地区的贫困线时，重新排名对于解释贫困地区分布的差异比缩小差距的效果更相关。概率模型和分解方法得出的第二个发现是，贫困状况随着使用不同的线而不同。总体而言，我们的研究结果普遍支持这样一种观点，即不解决空间价格差异问题的贫困政策可能会产生相关的分配错误。
The effectiveness of anti-poverty programs depends on whether they raise the incomes of poor households. This involves an adequate measurement of poverty and appropriate approaches for defining poverty lines. This paper analyzes the extent to which poverty measures are sensitive to alternative ways of adjusting national lines by spatial price differences. First, we analyze how moving from national to regional poverty lines has an impact on the incidence and intensity of poverty. Second, we show how poverty patterns vary with alternative definitions of poverty thresholds. Using data from all Spanish regions, our results show that regional levels of poverty change with each threshold, and the orderings of regions do not remain robust to the choice of poverty lines. We also show that re-rankings are more relevant for explaining differences in the regional distribution of poverty than gap-narrowing effects when a region-specific poverty line is used. A second finding resulting from probability models and decomposition methods is that poverty profiles vary as different lines are used. In general terms, our findings provide general support to the notion that poverty policies that do not address the problem of spatial price differences might yield relevant assignment errors.