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Income Inequality Decomposition, Russia 1992-2002: Method and Application

Author(s): Wim Jansen | Jos Dessens | Willem-Jan Verhoeven

Journal: Studies of Transition States and Societies
ISSN 1736-874X

Volume: 5;
Issue: 2;
Start page: 21;
Date: 2013;
Original page

Keywords: income inequality | decomposition | market transition | Russia

Decomposition methods for income inequality measures, such as the Gini index and the members of the Generalised Entropy family, are widely applied. Most methods decompose income inequality into a between (explained) and a within (unexplained) part, according to two or more population subgroups or income sources. In this article, we use a regression analysis for a lognormal distribution of personal income, modelling both the mean and the variance, decomposing the variance as a measure of income inequality, and apply the method to survey data from Russia spanning the first decade of market transition (1992-2002). For the first years of the transition, only a small part of the income inequality could be explained. Thereafter, between 1996 and 1999, a larger part (up to 40%) could be explained, and ‘winner’ and ‘loser’ categories of the transition could be spotted. Moving to the upper end of the income distribution, the self-employed won from the transition. The unemployed were among the losers.
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