The Marriage Model with Search Frictions
在Becker的完美匹配模型基础上引入搜索摩擦，发现当寻找伴侣需要时间且人们缺乏耐心时，匹配模式取决于合作收益，高类型者更可能与高类型者匹配。
Consider a heterogeneous agent matching model in which the payoff of each matched individual is a fixed function of both partners' types. In a 1973 article, Becker showed that assortative matching arises in a frictionless setting simply if everyone prefers higher partners. This paper shows that if finding partners requires time-consuming search and individuals are impatient, then productive interaction matters. Matching is positively assortative—higher types match with higher sets of types—when the proportionate gains from having better partners rise in one's type. With multiplicatively separable payoffs, these proportionate gains are constant in one's type, and "block segregation" arises, a common finding of the literature.