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Erscheinungsjahr: 
2014
Schriftenreihe/Nr.: 
Discussion Papers No. 769
Verlag: 
Statistics Norway, Research Department, Oslo
Zusammenfassung: 
Do market-orientated economies with relatively large cross-sectional levels of inequality have higher income mobility and therefore less permanent inequality? To answer this question, we introduce a formal representation of income mobility as an equalizer of permanent income. The proposed representation is called a mobility curve and forms the basis for comparison of income distributions according to income mobility. The mobility curve captures the extent to which the distribution of permanent income is equalized because of changes in individuals' relative income over time. From the derivative of the mobility curve, we can assess the equalizing effect of income mobility in the lower, middle and upper part of the distribution of permanent income. The mobility curve allows us to develop dominance criteria that provide partial orderings of income distributions according to income mobility. We obtain complete orderings through an axiomatically justified family of rank-dependent measures of income mobility, which summarizes the informational content of the mobility curve. We illustrate the usefulness of these methods by re-examining previous findings of income mobility across countries. In contrast to the conclusions in previous studies, we find that changes in relative income over time contribute more (as much) to equality in permanent income in the US as in the Nordic countries and Germany.
Schlagwörter: 
Inequality
Mobility
Permanent income
Social welfare
Rank-dependent measures
JEL: 
D31
D63
Dokumentart: 
Working Paper

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