Designing effective entrepreneurship training programs is still a challenge despite the investments in training made by governments and private institutions, and its importance for economic growth. We report a case of impact measurement of a social entrepreneurship program based on repeated randomized controlled trials (RCTs), discuss challenges of conducting repeated RCTs, and implications for policy evaluation. Impact measures from the first edition of the program showed no detectable treatment effects. The second edition was adjusted by reducing leadership training and increasing traditional entrepreneurial skills training, and had strong treatment effects on entrepreneurial activities, the creation of a new venture during the program, and subsequent start-up activity. Employing sequential field experiments can improve entrepreneurship training programs despite the challenges of executing RCTs in the field.

中文翻译：

---

基于重复随机对照试验的影响测量：以鼓励社会创业的培训计划为例

尽管政府和私营机构对培训进行了投资，并且对经济增长很重要，但设计有效的创业培训计划仍然是一个挑战。我们报告了一个基于重复随机对照试验 (RCT) 的社会创业计划影响测量案例，讨论了进行重复随机对照试验的挑战，以及对政策评估的影响。该计划第一版的影响测量显示没有可检测的治疗效果。第二版通过减少领导力培训和增加传统创业技能培训进行调整，对创业活动、计划期间的新创企业以及后续的创业活动有很强的处理效果。