DUAL‐INDEX MEASUREMENT OF INCOME INEQUALITY

Joongyang Park, YoungSoon Kim and Seon‐ja Heo

Bulletin of Economic Research, 2018, vol. 70, issue 3, 277-284

Abstract: This study introduces the concept of unequally distributed income and proposes a dual‐index measurement of income inequality that evaluates the magnitude and dispersion of unequally distributed income. We use the Rawlsian index as a magnitude index and employ current income inequality indices as a dispersion index. We describe the properties of the Rawlsian and dispersion indices, and apply these indices to real income data. Further, we show that the Gini dispersion index is a weighted average of Rawlsian indices for the sub‐distributions of the unequally distributed income distribution.

Date: 2018
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