Giving people accurate info about others' vaccine acceptance increases their own intentions to get vaccinated against COVID-19.

Evidence from an experiment in 23 counties with >400k subjects.

https://www.nature.com/articles/s41467-022-35052-4

Providing normative information increases intentions to accept a COVID-19 vaccine - Nature Communications

The authors show that accurate information about descriptive norms can increase intentions to accept a vaccine for COVID-19. They show that these effects are largely consistent in the 23 included countries and are concentrated among people who were otherwise uncertain about accepting a vaccine.

Nature

While this paper was already in approximately its current form in March 2021, it is nice to see this final version published.

I'm glad we didn't wait to write op-eds and speak with policy-makers about this work back then though!
eg https://www.latimes.com/opinion/story/2021-02-23/vaccine-hesitancy-public-health-message

Op-Ed: Emphasize vaccine acceptance, not hesitancy

Overstating or overemphasizing vaccine hesitancy can keep others from deciding to get the COVID-19 shots.

Los Angeles Times