Article révisé par les pairs
Résumé : Abstract In spite of the safety and efficiency of the COVID‐19 vaccines and the many promotion efforts of political and expert authorities, a fair portion of the population remained hesitant if not opposed to vaccination. Public debate and the available literature point to the possible role of people's attitudes towards medical institutions as well as their preference for complementary and alternative medicine (CAM) on their motivations and intentions to be vaccinated. Other potential ideological factors are beliefs about environmental laissez‐faire and divine providence insofar as they encourage people to let the pandemic unfold without human interference. In three cross‐sectional samples (total N  = 8214), collected at successive moments during the Belgian vaccination campaign, the present research examines the distal role of these psychological and ideological factors on vaccination intentions via motivational processes. Study 1 gauges the relation between trust in medical institutions and preference for CAM on intentions to get vaccinated via motivations. Study 2 examined the role of beliefs in the desirability of letting nature take its course (‘environmental laissez‐faire beliefs’) on vaccination intention via motivations. Study 3 tests whether people's adherence to environmental laissez‐faire and beliefs about divine providence are linked to their motivations for vaccination via trust in the medical institutions and CAM. Results show that adherence to CAM has a deleterious effect on vaccination intentions, whereas trust in medical institutions has a positive effect. Both ideological factors pertaining to external control are only moderately related, with environmental laissez‐faire beliefs having stronger effects on CAM, medical trust and vaccination motivations. We discuss the importance of this set of results in light of the growing interest in CAM and the increasing presence of messages appealing to the environment.

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