Omission bias is the tendency to consider harm from inaction preferable to equivalent harm from action. In this work, we explored how individual differences in omission bias shape parental vaccine-related decisions. Parents with a stronger omission bias showed greater negative emotional response to physician vaccine policy, placed lower trust in medical providers, and assigned a lower priority on vaccination. We observed this pattern of results even among parents who prioritize vaccination. Heightened anticipation of moral culpability for action (e.g., a child experiences vaccine side effects) and a diminished anticipation of moral culpability for possible harms of not acting (e.g., a child contracts a vaccine-preventable disease) accounted for the effects we observed. These results suggest that parents' reluctance to vaccinate their children stems—in part—from the heightened perceived moral culpability that comes with taking action (versus not taking action).

中文翻译：

---

采取行动意味着承担责任：遗漏偏差预示着父母不愿接种疫苗，因为预期对负面副作用负有更大的责任

遗漏偏见是认为不作为造成的伤害优于行动造成的同等伤害的倾向。在这项工作中，我们探讨了遗漏偏差的个体差异如何影响父母疫苗相关决策。具有较强遗漏偏见的父母对医生疫苗政策表现出更大的负面情绪反应，对医疗提供者的信任较低，并且对疫苗接种的优先级较低。即使在优先接种疫苗的父母中，我们也观察到了这种结果模式。对行动的道德责任的预期增加（例如，儿童经历疫苗副作用）和对不采取行动可能造成的伤害（例如，儿童感染疫苗可预防的疾病）的道德责任预期减少是我们观察到的影响的原因。这些结果表明，父母