Uncertainty represented by volatilities in equity markets has been observed to be time-variable and lead output fluctuations. In the rational expectation framework, uncertainty with this nature needs exogenous variables with time-varying volatilities, but technology, tastes and fiscal and monetary policies do not seem suitable for such variables. The paper contends that supervisions and law enforcement that reduce cheatings in contracts is one of the ultimate sources of uncertainty. The cheating plays an important role for uncertainty since it is the origin of noisy price observations that makes an economy uncertain in the framework of rational expectation approximate equilibria.
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Paper provided by EconWPA in its series Microeconomics with number
0407010.
Find related papers by JEL classification: D50 - Microeconomics - - General Equilibrium and Disequilibrium - - - General D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
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