Multidimensional Skills, Sorting, and Human Capital Accumulation
构建了一个多维技能的职业搜寻结构模型，利用O*NET和NLSY79数据估计，揭示技能不匹配的成因与成本，并指出单维技能模型的缺陷。
We construct a structural model of on-the-job search in which workers differ in skills along several dimensions and sort themselves into jobs with heterogeneous skill requirements along those same dimensions. Skills are accumulated when used, and depreciate when not used. We estimate the model combining data from O*NET with the NLSY79. We use the model to shed light on the origins and costs of mismatch along heterogeneous skill dimensions. We highlight the deficiencies of relying on a unidimensional model of skill when decomposing the sources of variation in the value of lifetime output between initial conditions and career shocks.