Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/102730
Authors: 
Jurkatis, Simon
Strehl, Wolfgang
Year of Publication: 
2014
Series/Report no.: 
Discussion Paper, School of Business & Economics: Economics 2014/22
Abstract: 
This paper points to flaws in Gini decompositions by income sources and population subgroups and to common pitfalls in the interpretation of decomposition results, focusing on methods within the framework of Rao (1969). We argue that within this framework Gini elasticities may provide the only meaningful way to examine the relevance of income sources or population subgroups for total income inequality. Moreover, we show that existing methods are unsuitable to decompose the trend in the Gini coefficient and provide a coherent method to decompose the Gini trend by income sources. We add to the recent trend of multi-decompositions by deriving Gini elasticities from a simultaneous decomposition by income sources and population subgroups.
Subjects: 
income inequality
Gini decomposition
Gini elasticity
income sources
population subgroups
multi-decomposition
JEL: 
C43
D31
D33
D63
O15
Document Type: 
Working Paper

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