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The long-run real effects of monetary shocks: Lessons from a hybrid post-Keynesian-DSGE-agent-based menu cost model

Miklós Váry

Economic Modelling, 2021, vol. 105, issue C

Abstract: This paper studies the long-run effects of monetary policy on real economic activity. It presents a hybrid menu cost model, the structure of which mimics that of dynamic stochastic general equilibrium models with fixed price adjustment costs (menu costs). It contains two mechanisms capable of generating long-run real effects in response to monetary shocks according to post-Keynesian macroeconomists, and its behavior is studied via agent-based simulations. After being calibrated to reproduce key features of the microdata, the model estimates that a typical monetary shock has substantial long-run real effects, with around one-quarter of the shock being absorbed by real output. However, the long-run effectiveness of a monetary shock turns out to decrease with its size. The key mechanisms generating long-run real effects are shown to be demand–supply interactions, that is, positive feedbacks from aggregate demand to aggregate supply. The results suggest that central banks should stronger emphasize stabilizing real economic activity when designing their monetary policies.

Keywords: Long-run monetary non-neutrality; Monetary shocks; Menu costs; Demand–supply interactions; Post-Keynesian monetary macroeconomics; Agent-based modeling (search for similar items in EconPapers)
JEL-codes: E12 E31 E32 E37 E52 (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecmode:v:105:y:2021:i:c:s0264999321002637

DOI: 10.1016/j.econmod.2021.105674

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