Vaccine hesitancy persists despite vaccination’s important role in global health. As many vaccines provide social benefits through herd immunity, vaccination decisions can raise moral concerns. Two studies explored the role of moral convictions in vaccination decisions. Study 1 (N = 485) revealed higher vaccination intentions when individuals thought about vaccination in moral terms. Emotions and moral piggybacking positively predicted moral convictions. In Study 2 (N = 1,111), we evaluated the effects of emotional, moral, and scientific pro-vaccination arguments on moral convictions, (...) support for mandatory vaccination, and tolerance of dissenting views. While no group differences were observed, moral convictions were correlated with increased support for mandatory vaccination but also with a reduced tolerance of dissenting opinions. Overall, moral convictions play a small but significant role in vaccination-related decisions. While moral convictions have beneficial effects on compliance, it is crucial not to overlook the adverse consequences, which may lead to a growing societal divide. (shrink)

Study 1 examined how personality and attitudes are related to daily pro-environmental behavior and whether these relationships are moderated by perceived behavioral costs and benefits. One hundred and seventy-eight participants responded to scales measuring the dark and light side of personality, as well as their pro-environmental attitude. Afterward, they were notified three times a day for 7 days in a row. Each time they reported their PEB that had occurred in the past four hours and indicated their behavioral costs and (...) benefits. Multilevel analyses showed a positive relationship between the frequency of PEB and the light triad of personality and pro-environmental attitude, while the dark tetrad was negatively related to PEB. Unexpectedly, less environmentally aware participants reported to engage in PEB with higher costs and lower benefits than did pro-environmental participants. A second study suggests that less environmentally aware people do not actually engage in PEB with high costs and low benefits, but rather that they only perceive their behavior to be costly and of little benefit. Overall, our findings suggest that the way people perceive their daily PEB is not necessarily shared by others. (shrink)