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Intertemporal pro-poorness

A long-lasting scientific and policy debate queries the impact of growth on distribution. A specific branch of the micro-oriented literature, known as ‘pro-poor growth’, seeks in particular to understand the impact of growth on poverty. Much of that literature supposes that the distributional impact should be measured in an anonymous fashion. The income dynamics and mobility impacts of growth are thus ignored. The paper extends this framework in two important manners. First, the paper uses an ‘intertemporal pro-poorness’ formulation that accounts separately for anonymous and mobility growth impacts. Second, the paper’s treatment of mobility encompasses both the benefit of “mobility as equalizer” and the variability cost of poverty transiency. Several decompositions are proposed to measure the importance of each of these impacts of growth on the pro-poorness of distributional changes. The framework is applied to panel data on 23 European countries drawn from the ‘European Union Statistics on Income and Living Conditions’ (EU-SILC) survey.
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