Testing Becker’s Theory of Positive Assortative Matching
基于Choo-Siow随机贝克尔婚姻模型，利用2000年美国人口普查数据检验配偶教育匹配是否满足总正序性质，发现1970至2000年间正选型匹配未普遍增强，但同质婚有所增加。
In a stochastic Becker marriage model (Choo and Siow), supermodularity of the match output function implies stochastic positive assortative matching (PAM): the equilibrium marriage matching distribution has all positive local log odds ratios or is totally positive of order 2 (TP2). The Choo-Siow model rationalizes the practice of studying PAM independent of population vectors and marriage rates and conditional on other spousal characteristics. Using white married couples in their 30s from the 2000 US Census, spousal educational matching generally obeyed TP2. Between 1970 and 2000, there was no general increase in PAM. There was increased homogamy in spousal education matching.