It takes two: Experimental evidence on the determinants of technology diffusion
通过在加纳服装企业主真实网络中随机培训一种编织技术，发现培训本身扩散有限，但随机增加需求冲击后，受训者向同伴的扩散率提高约400%，表明需求侧干预通过改变传播意愿驱动技术扩散。
This paper reports on an experiment that brings insights from the literature on demand-side determinants of technology adoption to the study of peer-to-peer diffusion. We develop a custom weaving technique and randomly seed training into a real network of garment making firm owners in Ghana. Training leads to limited adoption among trainees, but little to no diffusion to non-trainees. In a second phase, we cross-randomize demand for the technique. Demand shocks increase adoption of the technology in both groups and diffusion to untrained firms, generated by a pattern in which trained firm owners teach approximately 400% more of their peers if they are randomly assigned to the demand intervention. We find no evidence that our main effects are driven by differences in ability (learning-by-doing) or other adoption-based mechanisms. Rather, our findings are most consistent with the demand intervention generating differential willingness to diffuse among potential teachers.