When a decision maker is a member of multiple social groups, her actions may cause information to to spill over from one group to another. We study the nature of these spillovers in an observational learning game where two groups interact via a common player, and where conventions emerge when...

In classic matching games, individuals choose their partners and each pair chooses a contract from a finite set of feasible contracts; the existence of stable allocations then follows from the (generalized) Deferred Acceptance algorithm. We consider an extension where the contract set is a...