Wealth inequality: Theory, measurement and decomposition
本文回顾了不平等测度的基本原理，并用基尼系数和P份额两种指标，基于加拿大1999、2005和2012年的金融安全调查数据，通过多种分解方法分析了社会人口特征变化对财富不平等的影响。
Abstract This paper reviews the basic principles of inequality measurement, underlining the advantages and shortcomings of alternative measures from a theoretical standpoint and in the context of the study of the distribution of wealth. Adopting the two most popular measures, the Gini index and the P‐shares, the paper documents wealth inequality in Canada using the 1999, 2005 and 2012 Survey of Financial Security (SFS). It carries out several decompositions with covariates, featuring DFL‐type reweighting methods and Gini and P‐shares RIF regressions. The latter parallel decompositions deepen our understanding of how changes in socio‐demographic characteristics, including the compensating role of family formation and human capital, impact wealth inequality.