No man is an island: the impact of heterogeneity and local interactions on macroeconomics dynamics

Mattia Guerini, Mauro Napoletano and Andrea Roventini

SciencePo Working papers Main from HAL

Abstract: We develop an agent-based model in which heterogeneous firms and households interact in labor and good markets according to centralized or decentralized search and matching protocols. As the model has a deterministic backbone and a full-employment equilibrium, it can be directly compared to Dynamic Stochastic General Equilibrium (DSGE) models. We study the effects of negative productivity shocks by way of impulse-response functions (IRF). Simulation results show that when search and matching are centralized, the economy is always able to return to the full employment equilibrium and IRFs are similar to those generated by DSGE models. However, when search and matching are local, coordination failures emerge and the economy persistently deviates from full employment. Moreover, agents display persistent heterogeneity. Our results suggest that macroeconomic models should explicitly account for agents' heterogeneity and direct interactions.

Keywords: Agent based model; Local interactions; Heterogeneous agents; DGSE Model (search for similar items in EconPapers)
Date: 2018-01
Note: View the original document on HAL open archive server: https://sciencespo.hal.science/hal-03609582
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Citations: View citations in EconPapers (2)

Published in Economic Modelling, 2018, 68, pp.82-95. ⟨10.1016/j.econmod.2017.05.004⟩

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Related works:
Journal Article: No man is an Island: The impact of heterogeneity and local interactions on macroeconomic dynamics (2018)
Working Paper: No man is an island: the impact of heterogeneity and local interactions on macroeconomics dynamics (2018)
Working Paper: No man is an island: the Impact of Heterogeneity and local interactions on Macroeconomic Dynamics (2016)
Working Paper: No Man is an Island: The Impact of Heterogeneity and Local Interactions on Macroeconomic Dynamics (2016)
Working Paper: No Man is an Island: The Impact of Heterogeneity and Local Interactions on Macroeconomic Dynamics (2016)
Working Paper: No Man Is an Island: The Impact of Heterogeneity and Local Interactions on Macroeconomic Dynamics (2016)
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Persistent link: https://EconPapers.repec.org/RePEc:hal:spmain:hal-03609582

DOI: 10.1016/j.econmod.2017.05.004

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