The extended religious phenotype and the adaptive coupling of ritual and belief

In this paper, we consider the idea that religion is a transsomatic adaptation. At the genic level, the religious system constitutes an extended phenotype that has been fashioned by natural selection to overcome socioecological challenges inherent in human sociality, primarily problems of cooperation and coordination. At the collective level, the religious system constitutes a cognitive niche. We begin our discussion focusing on the former and concentrate our attention on the "sacred coupling" of supernatural agency and ritual behavior. We detail the complex connections between genes, cognitive faculties, and their expression in religious contexts, followed by a discussion of how religious ritual functions to maintain relative social order. We conclude with a discussion about the relevance of niche construction theory for understanding the adaptive nature of religious systems. © 2013 Taylor & Francis.