Confidence Collapse in a Multi-Household, Self-Reflexive DSGE Model

Federico Guglielmo Morelli, Michael Benzaquen, Marco Tarzia and Jean-Philippe Bouchaud

Papers from arXiv.org

Abstract: We investigate a multi-household DSGE model in which past aggregate consumption impacts the confidence, and therefore consumption propensity, of individual households. We find that such a minimal setup is extremely rich, and leads to a variety of realistic output dynamics: high output with no crises; high output with increased volatility and deep, short lived recessions; alternation of high and low output states where relatively mild drop in economic conditions can lead to a temporary confidence collapse and steep decline in economic activity. The crisis probability depends exponentially on the parameters of the model, which means that markets cannot efficiently price the associated risk premium. We conclude by stressing that within our framework, {\it narratives} become an important monetary policy tool, that can help steering the economy back on track.

Date: 2019-07
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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:1907.07425

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