It is widely acknowledged that derbies between two teams from the same city or region catch more public attention than "normal" soccer matches. Terms such as "Old Firm" (Rangers vs. Celtic), "Merseyside" (Liverpool FC vs. Everton FC), "Supercla' sico" (Boca Juniors vs. River Plate), and...

In two-person generosity games, the proposer’s agreement payoff is exogenously given, whereas that of the responder is endogenously determined by the proposer’s choice of the pie size. In three-person generosity games, equal agreement payoffs for two of the players are either exogenously...