What is it about?
Vaccine hesitancy threatens global health, highlighting the importance of developing and optimizing interventions to reduce vaccine hesitancy. One possible intervention is vaccine lotteries, where winners cannot collect prize money unless they are vaccinated. We tested how people responded to 12 different lottery structures differing in payout amount and number of winners. Participants were more willing to vaccinate for the seasonal flu when lotteries awarded more money to fewer people. Greater perceived likelihood of winning, greater anticipated regret, and vaccination beliefs (greater confidence, less preference for deliberation and greater collective responsibility) were also associated with greater vaccine intentions. The study provides insights about designing financial incentives to increase vaccination uptake.
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This page is a summary of: The impact of hypothetical lottery structures on vaccine-hesitant adults’ flu vaccination intentions: A conceptual replication of Taber et al. (2023)., Health Psychology, September 2025, American Psychological Association (APA),
DOI: 10.1037/hea0001553.
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