Central to the conceptualization of rivalry is the process of social categorization and seeing the self and others as members of ingroups and outgroups. For some sport fans — especially those deemed highly identified — a favorite team becomes an extension of one’s self, and opposing teams...

The aim of the paper is an examination wheatear the social spillover of consumption behaviours differs for the homophily and heterophily based structure of interactions. As an approximation of agents' behaviours households' expenditures with the reference person attributes were used. The...