Supplementary material from "Ritual morphospace revisited: the form, function and factor structure of ritual practice"

Human rituals exhibit bewildering diversity, from the Mauritian Kavadi to Catholic communion. Is this diversity infinitely plastic or are there some general dimensions along which ritual features vary? We analysed two cross-cultural datasets: one drawn from the anthropological record and another novel contemporary dataset to examine whether a consistent underlying set of latent dimensions in ritual structure and experiences were detected. First, we conducted a factor analysis on 651 rituals from 74 cultural groups, in which 102 binary variables were coded. We find a reliable set of dimensions emerged, which provide potential candidates for foundational elements of ritual form. Notably, we find that the expression of features associated with dysphoric and euphoric experiences in rituals appear to be largely orthogonal. Second, we follow-up with a pre-registered factor analysis examining contemporary ritual experiences of 779 individuals from Japan, India and the US. We find supporting evidence that ritual experiences are clustered in relatively orthogonal euphoric, dysphoric, frequency and cognitive dimensions. Our findings suggest that there are important regularities in the diversity of ritual expression and experience observed across both time and culture. We discuss the implications of these findings for cognitive theories of ritual and cultural evolution.This article is part of the XX ‘Ritual renaissance: new insights into the most human of behaviors'.