We study whether social welfare recipients may end up paying more for their grocery if social welfare payments are more concentrated over time. We first present a theoretical model showing that lower incomes in general and a lower lower bound of the income distribution lead to less mobility for...

The paper proposes and applies statistical tests for poverty dominance that check for whether poverty comparisons can be made robustly over ranges of poverty lines and classes of poverty indices. This helps provide both normative and statistical confidence in establishing poverty rankings across...

An axiomatic approach is used to propose a measure of extreme poverty which is not only multidimensional in nature, but also recognizes the fact that there are interaction effects between different deprivations, and that the length of time during which deprivations are felt may also have a...

Income variablity reduces social welfare if individuals are risk averse, and it is likely to increase inequality if poorer households are more vulnerable to shocks. Using a simple method to estimate risk-adjusted measures of inequality and welfare and wage data from Mexico, this note shows that...

The Gini income elasticity has been used to assess the impact of marginal proportional changes in income from a given source on inequality in total income. This note extends the methodology to take into account income variability.

Commodity producers in Africa often bene?t from guaranteed and relatively stable prices for their crops. This paper shows how to estimate the required increase in crop price necessary to o¤set the higher risk for farmers that price liberalization would entail due to large variations over time...

In this paper, we suggest a framework for the analysis of ethnic polarization. This framework allows for the measurement of ethnic or religious polarization. We apply our measure to Ivory Coast and find a surprising result as the ethnic polarization decreased in years preceding the conflict in...

Dans la perspective d’une réduction accélérée de la pauvreté et l’atteinte des objectifs du millénaire pour le développement, une riche littérature sur la croissance pro-pauvre s’est développée à partir du milieu des années 90 et propose des réformes pour générer une...

A new approach is developed to identify thorough marginal tax reforms for pairs of commodities and to test for the robustness of their impacts on Yaari's dual social welfare functions. S-concentration curves are provided for every order of positional dominance and an illustration is performed...

Qu'es-ce que la liberté? Qu'es-ce que l'égalité? En quoi une plus grande égalité peut-elle accroître la liberté? Telles sont les questions principales auxquelles tente de répondre cet article. Le problème du choix entre liberté et égalité soulève en effet le problème de la...