Fig. 4: Effect of intervention on vaccination intentions.
From: Providing normative information increases intentions to accept a COVID-19 vaccine
a The normative information treatments shift people to higher levels of vaccine acceptance, whether compared with receiving no information (control) or information about other, non-vaccine-acceptance norms (other behavior). The figure shows estimated distribution of vaccine acceptance responses for n = 464,533 respondents. b These estimated effects are largest for respondents who are uncertain about accepting a vaccine at baseline and respondents with baseline beliefs about descriptive norms that are under (rather than above or between) both of the levels of normative information provided in the treatments. There are n = 365,593 responses in the average analysis, n = 362,438 responses in the baseline vaccine acceptance analysis, and n = 113,438 responses in the beliefs about vaccine norms analysis. c While there is some country-level heterogeneity in these effects, point estimates of the effect of the broad normative information treatment are positive in all but one country (n = 365,593 responses). Error bars are 95% confidence intervals centered around mean estimates. Source data are provided as a Source Data file.
