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Erscheinungsjahr: 
2002
Schriftenreihe/Nr.: 
CESifo Working Paper No. 720
Verlag: 
Center for Economic Studies and ifo Institute (CESifo), Munich
Zusammenfassung: 
This paper shows that price rigidity evolves in an economy populated by imperfectly rational agents who experiment with alternative rules of thumb. In the model, firms must set their prices in face of aggregate demand shocks. Their payoff depends on the level of aggregate demand, as well as on their own price and their “neighbor”‘s price. The latter assumption captures local interactions. Despite the fact that the rational expectations equilibrium (REE) is characterized by a simple pricing rule that firms can easily adopt, the economy does not converge to the REE for highly autocorrelated aggregate demand shocks and a high level of local interaction. Instead, the aggregate price level exhibits rigidity, in that it does not fully react to contemporaneous aggregate demand shocks, and inertia, in that controlling to it positively depends on its past value. We show that local interactions and serial correlation of aggregate demand shocks play a key role in generating those results.
Schlagwörter: 
evolution
bounded rationality adaptive learning
experimentation
externalities
spillovers
local interaction
money
aggregate demand
price rigidity
rational expectations
monetary policy
macroeconomic fluctuations
Dokumentart: 
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