关键词: 正向选择婚配, 阶层固化, 收入不平等, 倾向得分匹配

Abstract: Using the data of Chinese Household Income Project and counterfactual test method, the paper finds that positive assortative mating exacerbates household income inequality. Furthermore, this positive assortative mating not only happens in offspring and also in parent which measuring by occupational hierarchy, and this positive trend becomes more popular. There is also a solid trend of intergenerational occupation. At last, using Propensity Score Matching calculating the income gap between positive and not positive assortative mating families, it shows that positive assortative mating leads to household income inequality by Matthew and the class solidification.

Key words: Positive Assortative Mating, Class Solidification, Income Inequality, Propensity Score Matching