On Various Ways of Measuring Pro-Poor Growth
On Various Ways of Measuring Pro-Poor Growth
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DOI：
10.2139/ssrn.1859868
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发表时间：
2011-09
期刊：
影响因子：
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通讯作者：
J. Deutsch;J. Silber
中科院分区：
文献类型：
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作者：
J. Deutsch;J. Silber
摘要本文研究了三种可能的扶贫增长方式。第一种假设是，按实际价值计算，贫困线随着时间的推移保持不变。第二种观点审查了贫困线等于收入分配中位数的一半的情况，但假设这样的贫困线是由外部因素确定的。最后，我们还提出了第三种类型的贫困变化分解，即当贫困线被假设为内生时得到的一种分解。此外，无论关于贫困线的假设是什么，我们在定义有利于穷人的增长时，都采取了相对和绝对的不平等衡量方法。对于扶贫增长的相对方法，假设当所有收入乘以一个常量时，不平等不会改变；而对于绝对方法，如果将所有收入相加相等，则不平等应该不会改变。经验性说明涵盖了以色列1990-2006年期间的情况，分析基于FGT贫困指数。事实证明，关于贫困线定义方式的假设，以及在扶贫增长的相对和绝对方法之间的选择，都极大地影响了结果。然而，从整体上看，在1990-2006年期间，以色列的增长是有利于富裕的。
Abstract This paper examines three possible approaches to pro-poor growth. The first one assumes that the poverty line remains constant in real terms over time. The second perspective examines the case where the poverty line is equal to half the median of the income distribution but assumes that such a poverty line is determined exogenously. Finally we also propose a third type of decomposition of the change in poverty, one which is obtained when the poverty line is assumed to be endogenous. In addition, whatever the assumption made concerning the poverty line, we take both a relative and an absolute approach to inequality measurement when defining pro-poor growth. With a relative approach to pro-poor growth it is assumed that inequality does not to vary when all incomes are multiplied by a constant whereas, with an absolute approach to pro-poor growth, inequality is supposed not to vary when an equal sum is added to all incomes. The empirical illustration covers the period 1990–2006 in Israel and the analysis is based on the use of the FGT poverty index. It turns out that the assumptions made concerning the way the poverty line is defined and the choice between a relative and an absolute approach to pro-poor growth greatly affect the results. As a whole however growth was pro-rich in Israel during the 1990–2006 period.