Why Does Spousal Education Matter for Earnings? Assortative Mating and Cross‐Productivity
利用中国双胞胎数据，分离配偶教育对收入的两种影响：夫妻间的交叉生产力和择偶匹配效应。发现两者均重要，但交叉生产力主要从丈夫流向妻子。
Spousal education is correlated with earnings for two reasons: cross-productivity between couples and assortative mating. This article empirically disentangles the two effects by using Chinese twins data. We have two innovations: using twins data to control for the unobserved mating effect in our estimations and estimating both current and wedding-time earnings equations. We find that both crossproductivity and mating are important in explaining the current earnings. Although the mating effect exists for both husbands and wives, the cross-productivity effect mainly runs from Chinese husbands to wives. Our findings shed light on the theories of human capital, marriage, and the family. (c) 2009 by The University of Chicago. All rights reserved.