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收入分配的代际流动性指的是子代收入与父代收入之间相关联的程度,也称代际收入弹性。本文致力于估算出相对准确的代际收入弹性值,并结合基尼系数比较其变化趋势。本文采用平均收入法和工具变量法进行估测来减少原本存在的偏低的误差。我国在1988年、1995年和2002年的代际收入弹性分别为0.296、0.435和0.596,可以看出,我国的代际收入流动性逐渐降低。另外,本文提出了适合中国劳动力市场的年龄界限并讨论其适用性,也进一步讨论了按性别和家庭收入分组的代际收入弹性值。最后,使用收入转移矩阵并计算相关统计量,得出的结论与OLS回归的结论基本一致。
Intergenerational mobility of income distribution refers to the degree of correlation between the offspring’s income and the paternal income, also called intergenerational income elasticity. This article is devoted to estimating the relatively accurate intergenerational income elasticity value and comparing its changing trend with the Gini coefficient. This article uses the average income method and the instrumental variable method to estimate to reduce the original existence of the low error. The intergenerational income elasticity in China in 1988, 1995 and 2002 are respectively 0.296, 0.435 and 0.596. It can be seen that the intergenerational income liquidity of our country is gradually decreasing. In addition, the paper presents the age-appropriateness for China’s labor market and discusses its applicability, and further discusses the intergenerational income elasticities grouped by gender and household income. Finally, using the income transfer matrix and calculating the relevant statistics, the conclusion is basically consistent with the conclusion of OLS regression.