The vaccination divide: Exploring moral reasoning associated with intergroup antipathy between vaccinated and unvaccinated people.

OBJECTIVES: There is growing evidence of intergroup hostility between vaccinated and unvaccinated individuals, a process of polarization that threatens to derail population health efforts. This study explores the moral underpinnings of intergroup antipathy between vaccinated and unvaccinated individuals. DESIGN: A cross-sectional design was employed to investigate the associations between the view of vaccination as a social contract or individual choice, perceived vulnerability to disease, perceptions of outgroup morality, feelings of warmth, and experiences of schadenfreude. METHODS: Data were extracted from an online, quantitative survey of 233 vaccinated and 237 unvaccinated participants collected between June and July 2022. RESULTS: Results revealed that vaccinated people had stronger negative attitudes towards unvaccinated people than vice versa. In line with hypotheses, the extent to which vaccinated people saw vaccination as a social contract was significantly associated with perceiving unvaccinated people as immoral. For unvaccinated people, seeing vaccination as an individual choice (the opposite of a social contract) was significantly associated with perceiving vaccinated people as immoral. Among both groups, viewing the other as immoral was associated with feeling significantly less warmth towards the opposing vaccination group, and more schadenfreude in the face of an outgroup member's suffering. Participants' perceived vulnerability to disease played a relatively small role in explaining polarization between vaccinated and unvaccinated people. CONCLUSIONS: This research builds on previous studies by identifying moral mechanisms associated with intergroup antipathy in the vaccine debate.

A 30-nation investigation of lay heritability beliefs.

Lay beliefs about human trait heritability are consequential for cooperation and social cohesion, yet there has been no global characterisation of these beliefs. Participants from 30 countries (N = 6128) reported heritability beliefs for intelligence, personality, body weight and criminality, and transnational factors that could influence these beliefs were explored using public nation-level data. Globally, mean lay beliefs differ from published heritability (h2) estimated by twin studies, with a worldwide majority overestimating the heritability of personality and intelligence, and underestimating body weight and criminality. Criminality was seen as substantially less attributable to genes than other traits. People from countries with high infant mortality tended to ascribe greater heritability for most traits, relative to people from low infant mortality countries. This study provides the first systematic foray into worldwide lay heritability beliefs. Future research must incorporate diverse global perspectives to further contextualise and extend upon these findings.

Loneliness trajectories over three decades are associated with conspiracist worldviews in midlife.

In the age of misinformation, conspiracy theories can have far-reaching consequences for individuals and society. Social and emotional experiences throughout the life course, such as loneliness, may be associated with a tendency to hold conspiracist worldviews. Here, we present results from a population-based sample of Norwegians followed for almost three decades, from adolescence into midlife (N = 2215). We examine participants' life trajectories of loneliness using latent growth curve modeling. We show that people reporting high levels of loneliness in adolescence, and those who experience increasing loneliness over the life course, are more likely to endorse conspiracy worldviews in midlife.

Meat and morality: The moral foundation of purity, but not harm, predicts attitudes toward cultured meat.

Cultured meat (also referred to as cultivated, cell-based, or cell-cultured meat) is a novel food technology that is presented as a method of meat production without reliance on large-scale industrial farming. The pro-cultured meat narrative rests, in part, on a moral foundation: cultured meat is purported to alleviate the environmental and animal welfare harms associated with farmed meat. Despite this narrative, no research has examined which moral values underpin attitudes towards cultured meat. To examine this, we surveyed 1861 participants from the United States and Germany about their moral foundations and their attitudes towards cultured meat. In line with predictions, people who more strongly endorse moral values about purity (i.e., had higher scores on the purity subscale of the moral foundations scale) held more negative attitudes towards cultured meat. However, this relationship was much more consistent among participants from the United States than participants from Germany. Against predictions, attitudes towards cultured meat were not reliably associated with the extent to which people focus on harm as a moral foundation. The latter finding was particularly surprising in light of harm-reduction narratives around cultured meat. These findings demonstrate the need for a more nuanced discussion about, and understanding of, consumer concerns around cultured meat and the values that underpin them.