The Measurement of Multidimensional Poverty and Intertemporal Poverty: Same Toolkit?

Santos, Maria Emma, and Suman Seth (2010). "The Measurement of Multidimensional Poverty and Intertemporal Poverty: Same Toolkit?" Paper presented at the 7th annual conference of the HDCA, 21-23 September 2010, Amman, Jordan.

The measurement of poverty in a single dimension usually income or over a single period of time is increasingly recognized inadequate as it provides only a nar- row portrayal of what poverty truly is. Over the past few decades, the measurement of poverty has evolved in two directions. One direction has evolved by incorporating more than one dimension of well-being, known as multidimensional poverty measure- ment. The other has evolved by considering a single dimension of well-being over more than one period of time, known as intertemporal poverty measurement. However, the progress in these two branches of measurement has been made independently, without properly acknowledging the common challenges faced. This paper aims at connecting these two branches, addressing the commonalities and di¤erences, and intends to pro- vide a framework that encompasses both. We analyze two main approaches to identify the poor, based on two essentially di¤erent focus axioms. We also revise the motivation and meaning of weights in each context, we explore the types of transfer axioms, issues of substitutability versus complementarity between dimensions or incomes across di¤er- ent time periods, and the existence of intermediate groups under certain identi?cation criteria.
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