POSITIVE SKILL CLUSTERING IN ROLE‐ASSIGNMENT MATCHING MODELS
研究角色分配匹配模型中的均衡匹配模式，发现一种新的正向聚类现象：整体上正向分类、局部负向分类，并分析生产函数变化对匹配、流动性和工资不平等的影响。
Abstract Kremer and Maskin (1996, NBER Working Paper) explore matching when production involves defined roles. Despite underlying Cobb–Douglas production functions, the induced maximum production function is not supermodular (SPM), and positive sorting does not arise. This article introduces and solves a general class of role‐assignment matching models with general SPM production functions. The unique equilibrium entails a novel blend of positive sorting in the large, and locally negative sorting that I call positive clustering. I show how the equilibrium matching changes as the production function changes. In a dynamic extension, sorting, mobility, and wage inequality positively covary with changes in production across matching markets.