Nonparametric Estimation of Labor Supply and Demand Factors
在非参数联立方程模型中推导出劳动供给与需求变动变量的严格边界，仅利用供给曲线与需求曲线交点观测值，并加入扰动项分布假设使边界收紧，进而估计工资差异变化中的供给与需求因素。
This article derives sharp bounds on labor supply and demand shift variables within a nonparametric simultaneous equations model using only observations of the intersection of upward sloping supply curves and downward sloping demand curves. Furthermore, I demonstrate that these bounds tighten with the imposition of plausible assumptions on the distribution of the disturbance terms. Using Katz and Murphy's (1992) panel data on wages and labor inputs, I estimate these bounds and assess the supply and demand factors that determine changes within male--female wage differentials and the college wage premium.