 What about other attempts to provide an account of group belief? Christian List and Philip Pettit (2011) explore how individuals may yield a group belief through “judgment aggregation”. Although List and Pettit do not put it this way, it seems that aggregation refers to metaphysical relations between beliefs of group members and beliefs of the groups they compose. It refers to ways in which a set of beliefs by group members can give rise to beliefs held by the group. Here is how List and Pettit express these metaphysical relations: