A Stochastic Frontier Model with Endogenous Treatment Status and Mediator
提出一种新的随机前沿模型，允许处理状态和中介变量内生，将政策总效应分解为技术效应和效率效应，并判断效应是直接来自政策还是通过中介间接实现，适用于政策设计与评估。
Government policies are frequently used to promote productivity. Some policies are designed to enhance production technology, while others are meant to improve production efficiency. An important issue to consider when designing and evaluating policies is whether a mediator is required or effective in achieving the desired final outcome. To better understand and evaluate the policies, we propose a new stochastic frontier model with a treatment status and a mediator, both of which are allowed to be endogenous. The model allows us to decompose the total program (treatment) effect into technology and efficiency components, and to investigate whether the effect is derived directly from the program or indirectly through a particular mediator. Supplementary materials for this article are available online.