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The Debunking the Granular Origins of Aggregate Fluctuations: From Real Business Cycles back to Keynes

Giovanni Dosi, Mauro Napoletano, Andrea Roventini and Tania Treibich

No 29, Sciences Po publications from Sciences Po

Abstract: In this work we study the granular origins of business cycles and their possible underlying drivers. As shown by Gabaix (2011), the skewed nature of firm size distributions implies that idiosyncratic (and independent) firm-level shocks may account for a significant portion of aggregate volatility. Yet, we question the original view grounded on “supply granularity”, as proxied by productivity growth shocks – in line with the Real Business Cycle framework–, and we provide empirical evidence of a “demand granularity”, based on investment growth shocks instead. The role of demand in explaining aggregate fluctuations is further corroborated by means of a macroeconomic Agent-Based Model of the “Schumpeter meeting Keynes” family (Dosi et al., 2015). Indeed, the investigation of the possible microfoundation of RBC has led us to the identification of a sort of microfounded Keynesian multiplier.

Keywords: Business cycles; Granular residual; Granularity hypothesis; Agent-based model; Firm dynamics; Productivity growth; Investment growth (search for similar items in EconPapers)
JEL-codes: C63 E12 E22 E32 O4 (search for similar items in EconPapers)
Date: 2018-09
New Economics Papers: this item is included in nep-bec, nep-cmp, nep-dge, nep-hme, nep-mac and nep-pke
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Related works:
Journal Article: Debunking the granular origins of aggregate fluctuations: from real business cycles back to Keynes (2019) Downloads
Working Paper: Debunking the granular origins of aggregate fluctuations: from real business cycles back to Keynes (2019) Downloads
Working Paper: Debunking the granular origins of aggregate fluctuations: from real business cycles back to Keynes (2019) Downloads
Working Paper: Debunking the granular origins of aggregate fluctuations: from real business cycles back to Keynes (2019) Downloads
Working Paper: The Debunking the Granular origins of Aggregate fluctuations: from real Business Cycles back to Keynes (2018) Downloads
Working Paper: The Debunking the Granular Origins of Aggregate Fluctuations: From Real Business Cycles back to Keynes (2018) Downloads
Working Paper: The Debunking the Granular Origins of Aggregate Fluctuations: From Real Business Cycles back to Keynes (2018) Downloads
Working Paper: Debunking the Granular Origins of Aggregate Fluctuations: From Real Business Cycles back to Keynes (2018) Downloads
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