Damage Control Productivity: An Input Damage Abatement Approach
比较了三种不同生产函数设定下三种农药的边际产品价值，发现投入损害减缓设定显示农药对不同生产投入有不同影响，但统计证据较弱；产出损害减缓设定统计关系更显著但部分限制不被数据支持；传统二次生产函数不会高估边际产品价值。
This paper compares the value of the marginal product of three different pesticides from different specifications of the production function. The specifications are the output damage abatement specification proposed by Lichtenberg and Zilberman, a general input damage abatement specification and a traditional production function. These specifications are estimated on panel data of specialised Dutch arable farms over the period 1989–1992, using Generalised Maximum Entropy estimation. Results of the input damage abatement specification show that pesticides have different impacts on individual productive inputs, although statistical evidence is weak. The output damage abatement specification produces statistically more significant relations, but imposes restrictions that are only partly supported by the data. It is also found that estimation of a quadratic traditional production function, that treats damage abatement inputs in the same way as productive inputs, does not lead to over estimation of the value of the marginal product as previous authors have hypothesised.