摘要： 代际收入流动指职称论文发表期刊个人收入在多大程度上由其父辈的收入决定，反映了一个社会的机会平等程度，主要衡量指标是代际收入弹性。以往对中国代际收入弹性的测量由于模型设定、数据来源和样本磨损等问题的交互导致估计结果差异较大。本文采用协方差约束下的完整模型估计代际收入弹性。结果表明，中国的代际收入弹性约为0.37，在国际上处于中等水平；使用截面数据计算的静态指标度量收入差距会产生严重的向上偏误。以上发现表明中国的不平等程度被高估了，在一定程度上解释了高收入差距伴随着高经济增长的典型化事实。
关键词： 代际收入流动;代际收入弹性;最小距离估计

Wang Yan-min^1,*， Jin Jing^2,

（  1、Institution of Anhui\'s Economic & Social Development Research,Anhui University of Finance and Economics, Anhui, Bengbu 233041；       2、Accounting School,Zhongnan University of Economics and Law, Wuhan 430073；  ）

Abstract： Intergenerational income mobility studies the degree to which income status is transmitted from one generation to the next, which reflects equality of opportunity and is measured by intergenerational income elasticity. The previous studies differ widely because the interaction among model specification, data resource and sample attrition. The paper estimates intergenerational income elasticity using complete model with covariance restrictions. The new estimation shows that intergenerational income elasticity in China is 0.37, indicating a medium level in the world. In addition, using static indicator in cross-sectional data as the measure of income inequality will give rise to serious upward bias. The findings suggest that inequality in China smacks of exaggeration and explain to an extent the stylized fact, higher income gap and higher economic growth.
Keywords： Intergenerational Income Mobility; Intergenerational Income Elasticity;Minimal Distance Estimator