The Einstein effect provides global evidence for scientific source credibility effects and the influence of religiosity.

People tend to evaluate information from reliable sources more favourably, but it is unclear exactly how perceivers' worldviews interact with this source credibility effect. In a large and diverse cross-cultural sample (N = 10,195 from 24 countries), we presented participants with obscure, meaningless statements attributed to either a spiritual guru or a scientist. We found a robust global source credibility effect for scientific authorities, which we dub 'the Einstein effect': across all 24 countries and all levels of religiosity, scientists held greater authority than spiritual gurus. In addition, individual religiosity predicted a weaker relative preference for the statement from the scientist compared with the spiritual guru, and was more strongly associated with credibility judgements for the guru than the scientist. Independent data on explicit trust ratings across 143 countries mirrored our experimental findings. These findings suggest that irrespective of one's religious worldview, across cultures science is a powerful and universal heuristic that signals the reliability of information.

The psychology of nonbelievers.

Contrary to some conceptualizations, nonbelievers are more than simply those scoring low on religiosity scales. They seem to be characterized by analytic, flexible, and open-minded social-cognitive attributes, although this may interact with sociocultural levels of religiosity. This paper demonstrates that nonbelief, at least in the West, tends to coincide with specific worldviews, namely valuing rationality and science, as well as humanistic and liberal values. Furthermore, nonbelievers seem to parallel believers in various indicators of health. Finally, as all ideologists, nonbelievers may hold prejudicial attitudes toward groups perceived as threatening their (secular) worldviews, although this has some limits. Global increases in secularity make the nascent psychological study of nonbelievers and nonreligious worldviews an important research programme.