Scaling Agricultural Policy Interventions
农业政策干预的规模化效应AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确提到用定量模型结合实验估计参数与行政微观数据,属于结构估计;同时以实验因果识别为基础,并讨论福利收益在最贫困家庭中的分布变化,故也涉及因果推断与分布效应。
农业政策干预的规模化效应AI 解读 ↓
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Policies to raise agricultural productivity have been central in the fight against global poverty. Their impacts are often measured in experiments that provide strong causal identification but may be too small-scale to capture general equilibrium effects that arise when policies are scaled up. We develop a quantitative model of agricultural trade, featuring a granular economic geography, that combines parameters estimated from small-scale experiments with rich administrative microdata to quantify how treatment effects change when policies are scaled up. Applying this framework to input subsidies in Uganda, we find that average welfare gains fall by about 20% when implemented at scale. However, gains increase among the poorest households, as returns shift from land to labor, reducing the regressivity of the intervention by more than half. We examine how these forces vary with household and market characteristics and the geographic scale of implementation, with implications for randomized saturation designs.