文章基本信息

标题：A Class of Two-Group Polarization Measures
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作者：Walter Bossert ; William Schworm
期刊名称：Discussion Papers / School of Business, University of New South Wales
出版年度：2007
卷号：2007
出版社：Sydney
摘要：Polarization is a phenomenon that has attracted an increasing amount of attention recently, both in Economics and in other social sciences. While it appears to be widely acknowledged that, in the context of income distributions, polarization has to do with the “disappearing middle class” (Wolfson, 1994, p. 353), a precise definition of the term has remained elusive. There are similarities to the notion of income inequality because certain mean-preserving spreads are typically assumed to increase both inequality and polarization. But there is more to polarization than that. In order to formalize the concept, society needs to be partitioned into groups with strong group identification and clear differentiation between groups.