In this study, the authors inspect the relationship between religion, morality, and cooperation by examining the extent to which people associate their deities with moral concern. Using data from 2,228 individuals in 15 different field sites, they find that on average, people tend to ascribe at least some moral concern to their deities, and this effect is stable even after controlling for the influence of explicitly moralistic deities that these societies also worship. The authors also find that ratings of moral concern are not necessarily very high, even for deities that are typically considered to be moralistic, and that there is individual-level variation in the degree of moral concern attributed to deities. In addition, there is an individual-level correlation between how morally interested two selected deities are conceived to be and that being male or more educated decreases the likelihood of associating deities with moral concern. These findings challenge the longstanding belief that belief in moralistic deities is unique to certain societies or religions and instead suggest that the association between deities and moral concern is more widespread and variable, and suggest that the moral character of gods may be tied to cooperation within societies.

This article is a quantitative analysis of 592 participants from 8 societies. The study examines a number of theories about what predicts moralistic religions, including life history theory. Findings suggest that there is no evident relationship between these life history predictions and the religious beliefs regarding moralism.

How do educational attainment and food insecurity shape individual religiosity? The material insecurity hypothesis of religion claims that in conditions of material insecurity, individual religiosity will increase. However, through a cross-cultural analysis of 14 societies, the authors of this article find that formal education and food insecurity do not have a significant effect on religiosity.

Researchers tested the popular identity fusion theory, which states that while maintaining one’s own individual identity, a deep affinity with one’s group can contribute to sacrifice for that group, in conjunction with their own hypotheses, using a behavior economic experiment. The experiment looked at whether after rolling a die to determine which cup a coin was placed into, participants actually followed the rules, or favored themselves (by putting the coin into their own cups at a disproportionate rate). The findings state that while on average, the individual participants did indeed favor themselves, those with higher ingroup fusion were more likely to sacrifice coins to other members of their ‘ingroup.' The experiments were conducted in 8 culturally diverse field sites.

In this paper, the author argues that moral systems evolved as a way to enforce cooperation between people outside of kin groups. Because cooperation within kin groups has apparent adaptive advantages, it is argued that these moral systems will be less important for societies with tight kin groups and conversely more important for those with looser kin groups. In order to test this theory, the author creates an original model that incorporates both ethnographic data and data from contemporary countries. Thus, it is postulated that historical kinship practices will influence contemporary systems. The paper concludes that there is sufficient historical evidence for this theory.

This article investigates relationships among society size, war and conflict, preferred habitats, and belief in moralizing gods. The authors discuss morality and collective action in the face of natural disasters and competition for resources, theorizing that beliefs in moralizing gods could facilitate such cooperation.

Stark attempts to resituate Tylor's formulation of religion by calling into question Swanson's (1960) and Peregrine's (1996) findings that supernatural sanctions and moral behavior are consistently correlated in small-scale societies. Positing that Swanson's correlations were confounded by variables related to cultural complexity, Stark tests the association of presence of moralizing Gods with cultural complexity explicitly, as well as measures of morality in various nations as provided by the World Values Survey (1990-1991). The robust correlations across cultures noted below, as well as cross-national findings, provide support for the researcher's theory that it is particular conceptions of God rather than participation in rites and rituals which empower religion to sustain complex moral culture.

Using a sample of eight non-Western communities from around the world, this article examines correlations between religious beliefs about the desires of local deities, and strategies employed to facilitate local intra-community cooperation. The authors find that the desires and concerns of local gods tend to encourage what have historically been the most effective modes of intra-group cooperation, while also reinforcing the local cultural milieu.

This study tests the relationship between supernatural punishment (indexed by the importance of moralizing "high gods") and several proxy measures of cooperation. Results suggest that the presence of high gods is associated with money and credit, credit source, community size, jurisdictional hierarchy beyond the local community, and sanctions.

This book investigates the origins of supernatural and religious beliefs. The author tests associations between various types of beliefs (e.g. witchcraft, monotheism) and various societal characteristics (e.g. mobility, class stratification). Many hypotheses are supported. Theoretical discussion is included, and the author posits that “the belief in a particular kind of spirit springs from experiences with a type of persisting sovereign group whose area of jurisdiction corresponds to that attributed to the spirit” (175).