Participants
HOLIDAY
The final sample contained 95 UK residents, recruited using volunteer sampling through the Prolific participant platform. Participants were 18–65 years of age, and within that age group, we created a representative sample based on sex and age (2 × 4), with age strata 18–29, 30–41, 42–53, 54–65, (e.g., 18–29-year-old females).Participants (Participants were asked whether they or one of their family members were part of a group that is vulnerable to COVID-19. Participants also answered questions on their willingness to take a COVID-19 vaccine and their beliefs about vaccine efficacy. We also elicited predictions of when people would be able to resume on-site work (insofar as that will ultimately be the case), when people would be able to go on holiday, and when life would go back to ‘normal’. These predictions and vaccination attitudes were then combined into three scores, varying from 0 to 10.Notably, the UK government announced on 29 March that 6 people from 6 different households would be allowed to meet outside. This, together with Easter weekend, produced a situation wherein people were likely to have non-adherence urges.