公平性指标:从基尼系数到收入满足度差距

Equality Index:from Gini Coefficient to Income-Satisfaction

本文通过对财富分配、生活方式和价格水平、货币边际效用递减、评价生活质量标准以及指标构造缺陷等方面的分析,揭示了基尼系数作为公平性指标的局限性。本文认为,公平是公众认为合理的、愿意接受的规范和准则,其结果是公众的满意和社会的和谐。根据这一观点,我们可以用收入满足度来反映公众的满意程度,从而建立能反映社会公平与和谐程度的指标——收入满足度差距指标,并用德国的经验数据加以验证。

Based on the analysis of distribution of the social wealth, the life style, the price level, the diminishing marginal utility of the money, the criteria to assess the quality of life and the indicator structure flaw, the paper demonstrates the limitation of the Gini coefficient as an equality index. We hold this view that equality is the norm and standard that the public deem to be reasonable, fair and acceptable and that such equality results in general satisfaction and social harmon）,. Hence, the income-satisfaction level can be used to represent the level of the public satisfaction and to establish income satisfaction difference index that indicates social equality and harmony. Also, data from the German economic research institution is used to verify our theory.