Quantifying the Economic Return to Participatory Extension Programmes in Ireland: an Endogenous Switching Regression Analysis
使用内生转换回归模型，评估爱尔兰政府资助的奶牛讨论小组对农场利润的影响，发现参与能显著提升经济效益，支持政府扩大参与的目标。
Abstract This article examines the effectiveness of a government funded extension programme. Farm‐level data are used to assess the economic impact of dairy discussion groups, a common participatory extension method. The evaluation focuses on whether discussion group participants have improved farm profits, which is estimated with an endogenous switching regression model. This method controls for self‐selection bias due to unobserved characteristics, such as the farmer’s ability, that may affect both participation and farm profitability. After controlling for this potential bias, we find that the economic returns to discussion group membership are positive, thus supporting government targets to enrol more farmers in discussion groups.