Food Price Changes and Household Welfare: What Do We Learn from Two Different Approaches?
比较边际方法与非分离农业家庭模型在预测食品价格大幅变动对家庭福利影响时的差异，发现允许行为调整可降低福利损失，二阶效应平均占一阶效应的40%。
The use of a marginal approach can significantly distort the predicted effects of large price variations on monetary welfare over the medium- to longer-term. This paper aims at shedding some light on the differences between a marginal approach and a non-separable agricultural household model with behavioural responses. When behavioural adjustments are allowed, households can adapt their consumption and production patterns by resulting in lower deteriorations in household welfare. The second-order effects introduced in the approach with responses reduce the negative effects due to the first-order consumption effects, with significant differences across quintiles. On average, the second-order effects represent up to roughly 40 per cent of total first-order effects.