Munich Personal RePEc Archive

Social Welfare Analysis of Income Distributions: Ranking Income Distributions with Lorenz Curves

Bellù, Lorenzo Giovanni and Liberati, Paolo (2005): Social Welfare Analysis of Income Distributions: Ranking Income Distributions with Lorenz Curves. Published in: (1. November 2005)

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Abstract

This paper illustrates how Lorenz Curves can be used to identify the best income distribution on social welfare grounds, within a set of alternative income distributions generated by different policy options.

After highlighting some drawbacks of using specific functional forms of the Social Welfare Function (SWF) to infer welfare judgments, the rationale for using Lorenz Curves to rank income distributions is provided in a step-by-step procedure and is illustrated with some simple numerical examples. This module also points out the limitations of Lorenz dominance and highlights how, in some circumstances, it is necessary to use Generalised Lorenz (GL) Curves.

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