Imperfect recognizability and coexistence of money and higher-return assets
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- Hu, TW. Econ Theory (2013) 53: 111. doi:10.1007/s00199-011-0687-6
Existing solutions to the problem of coexistence of money and higher-return substitutes that rely on imperfect recognizability of the substitutes adopt extreme assumptions: they either have a zero cost of counterfeiting the substitutes or omit plausible refinements that would rule out pooling equilibria. Here coexistence is obtained with a general distribution of positive counterfeiting costs within a signaling-game framework in which the intuitive criterion is invoked. Moreover, if the cost of counterfeiting is small, then any monetary equilibrium that satisfies the intuitive criterion necessarily exhibits coexistence. A continuity assumption on off-equilibrium beliefs is also considered. It is satisfied by equilibria with small use of substitutes, but not by cash-in-advance equilibria.
KeywordsCounterfeiting Cash-in-advance Monetary system Signaling games
JEL ClassificationE40 E42
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