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Capturing the distribution sensitivity among the poor in a multidimensional framework. A new proposal

Listed author(s):
  • Mª Casilda Lasso de la Vega

    (Department of Applied Economics IV, University of the Basque Country)

  • Ana Urrutia


    (Department of Applied Economics IV, University of the Basque Country)

  • Amaia de Sarachu

    (Department of Applied Economics IV, University of the Basque Country)

This paper aims to explore properties that guarantee that multidimensional poverty indices are sensitive to the distribution among the poor, one of the basic features of a poverty index. We introduce a generalization of the monotonicity sensitivity axiom which demands that, in the multidimensional framework too, a poverty measure should be more sensitive to a reduction in the income of a poor person, the poorer that person is. It is shown that this axiom ensures that poverty diminishes under a transfer from a poor individual to a poorer one, and therefore it can also be considered a straightforward generalization of the minimal transfer axiom. An axiom based on the notion of ALEP substitutability is also introduced. This axiom captures aversion to both dispersion of the distribution, and attribute correlation, and encompasses the multidimensional monotonicity sensitivity axiom we propose. Finally, we review the existing multidimensional poverty families and identify which of them fulfil the new principles.

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Paper provided by ECINEQ, Society for the Study of Economic Inequality in its series Working Papers with number 193.

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Length: 25 pages
Date of creation: 2011
Handle: RePEc:inq:inqwps:ecineq2011-193
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  1. Casilda Lasso de la Vega & Ana Urrutia & Amaia Sarachu, 2010. "Characterizing multidimensional inequality measures which fulfil the Pigou–Dalton bundle principle," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 35(2), pages 319-329, July.
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