We reexamine the core in the adverse selection insurance economy first studied by Rothschild and Stiglitz (1976). Defining blocking in a way that takes private information into account, the core is sometimes empty. We define the coalition-proof core as the set of allocations which are blocked...

A model of currency and stored value cards as media of exchange reveals how the economy might fare with and without such cards. Stored value cards are beneficial because they help alleviate the deadweight loss due to inflation. When the nominal interest rate is greater than the government's...

A model in which both currency and stored value cards are used to make payments is presented. I compare steady-state equilibria with and without stored value cards. Stored value cards are beneficial because they help alleviate the deadweight loss due to inflation. When the nominal interest rate...

A model in which both currency and stored value cards are used to make payments is presented. I compare steady-state equilibria with and without stored value cards. Stored value cards are beneficial because they help alleviate the deadweight loss due to inflation. When the nominal interest rate...