Can we nudge farmers into saving water? Evidence from a randomised experiment
通过一项在法国西南部200名农民中开展的随机对照实验，检验社会比较助推能否作为传统CAP措施的补充，促进农民节水行为。结果排除了中到大效应，但发现助推减少了高灌溉者的用水量，同时降低了完全不灌溉的农民比例。
Abstract We test whether social comparison nudges can promote water-saving behaviour among farmers as a complement to traditional CAP measures. We conducted a randomised controlled trial among 200 farmers equipped with irrigation smart meters in South-West France. Treated farmers received weekly information on individual and group water consumption over four months. Our results rule out medium to large effect-sizes of the nudge. Moreover, they suggest that the nudge was effective at reducing the consumption of those who irrigate the most, although it appears to have reduced the proportion of those who do not consume water at all.