The Production Effects of Agricultural Income Support Policies under Uncertainty
分解了农业收入支持计划对生产的财富、保险和耦合效应，发现即使名义上脱钩的计划也会通过前两种效应增加最优投入水平，对贸易和国内政策改革研究有参考价值。
Abstract This analysis decomposes the production impacts of income support programs into wealth, insurance, and coupling effects. Under the usual assumptions about preferences, the wealth and insurance effects of many support programs increase optimal input levels even for supposedly decoupled programs. If the program is “coupled” in the usual sense, then all three effects often act in the same direction. It is concluded that studies of trade and domestic policy reform in stochastic environments should consider insurance and wealth effects. The derivative conditions required to obtain results are also subjected to scrutiny. Simulations for an Iowa corn producer confirm the comparative statics.