Gandhi, Linnea; Milkman, Katherine L.; Ellis, Sean; … - 2021
We present a pre-registered experiment testing the effects of three, high-payoff (up to $50,000) vaccine regret … lotteries in Philadelphia. In each drawing, residents of a randomly selected “treatment” zip code received half of the 12 … estimates of the benefits of these lotteries for Philadelphia’s overall vaccination rate. Our experimental results, however …