The Econometrics of Damage Control: Why Specification Matters
指出，损害控制要素（如农药）对生产的作用与常规投入不同，标准生产函数会高估其生产率并误导政策，提出了替代模型和估计方法。
Abstract The contribution of damage control agents to production differs fundamentally from that of standard inputs (lands, labor, capital). This paper develops an econometric model based on the key characteristics of damage control agents and examines its properties. It demonstrates that standard production function specifications overestimate damage control agent productivity and have erroneous implications for the evolution of damage control agent productivity and use in response to changing environments (e.g., the spread of pest resistance). It also proposes several alternative specifications and discusses methods for estimating them.