Can referral improve targeting? Evidence from an agricultural training experiment

We seek to better target agricultural training by inviting current trainees to refer future trainees. Some referees are rewarded or incentivized. Training increases the adoption of recommended practices and improves performance, but not all trainees adopt. Referred trainees are 4.2% more likely to adopt than randomly selected trainees, and 3.4-3.8% more likely than what can be predicted from observed characteristics of trainees. This implies...