Economic Growth and the Middle Class in an Economy in Transition by Zoya Nissanov

Author:Zoya Nissanov
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

5.1 Review of the Literature

5.1.1 Polarization: Definition and Properties

Polarization has become an important issue in income distribution analysis. Polarization refers to the extent to which the population is clustered around a small number of distant poles in any given distribution. It is designed to capture the appearance (or disappearance) of groups in a distribution.

Following Esteban and Ray (1994), we first stress that a measure of polarization should have three desirable properties:(1)Polarization is a matter of groups. There must be a small number of significantly sized groups; groups of insignificant size carry little weight. When there is one group only, there is no polarization.

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