We examine the relationship between cognitive ability and prompt COVID-19 vaccination using individual-level data on more than 700,000 individuals in Sweden. We find a strong positive association between cognitive ability and swift vaccination, which remains even after controlling for confounding variables with a twin-design. The results suggest that the complexity of the vaccination decision may make it difficult for individuals with lower cognitive abilities to understand the benefits of vaccination. Consistent with this, we show that simplifying the vaccination decision through pre-booked vaccination appointments alleviates almost all of the inequality in vaccination behavior.

我们使用瑞典超过 700,000 人的个人数据来研究认知能力与及时接种 COVID-19 疫苗之间的关系。我们发现认知能力和快速疫苗接种之间存在很强的正相关性，即使在控制双胞胎设计的混杂变量后，这种相关性仍然存在。结果表明，疫苗接种决策的复杂性可能使认知能力较低的个体难以理解疫苗接种的好处。与此相一致的是，我们表明，通过提前预订疫苗接种预约来简化疫苗接种决策可以缓解几乎所有疫苗接种行为的不平等。