The poverty impacts of improved cowpea varieties in Nigeria: A counterfactual analysis
利用尼日利亚1500多户家庭调查数据，评估改良豇豆品种采纳对收入和资产贫困的影响，发现采纳使家庭人均收入提高17%、资产拥有提高24%，并使收入贫困和资产贫困各降低5个百分点。
Adoption of improved agricultural technologies has long been recognized as critical for reducing poverty through increased productivity, incomes, and asset accumulation. Using a nationally representative survey data from a sample of over 1500 households in Nigeria, this paper evaluates the impacts of adoption of improved cowpea varieties on income and asset poverty reduction using an endogenous switching regression model. The results showed that adoption of improved cowpea varieties increased per capita household income and asset ownership by 17 and 24 percentage points, respectively. The results based on the observed and counterfactual income and asset distributions further showed that adoption reduced both income poverty and asset poverty by 5 percentage points. The paper concludes with a discussion of the policy options for increasing adoption and impacts of improved cowpea varieties in Nigeria.