Uncertainty, Intangible Capital, and Productivity Dynamics Edoardo Palombo Working Paper No. 909 July 2020 ISSN 1473-0278 School of Economics and Finance Uncertainty, Intangible Capital, and Productivity Dynamics Edoardo Palombo Queen Mary, University of London∗ June 25, 2020y JOB MARKET PAPER Click here for latest version Abstract Following an unparalleled rise in uncertainty over the Great Recession, the US economy has been experiencing anaemic productivity growth. This paper offers a quantitative study on the link between uncertainty and low productivity growth. Firstly, using micro level data I show that uncertainty accounts for half of the drop in intangible capital stock during the Great Recession. Secondly, to investigate the effect of uncertainty on productivity growth dynamics, I present a novel general equilibrium endogenous growth model with heterogeneous firms that undertake intangible capital investment subject to non-convex costs and time-varying uncertainty. I show that uncertainty can generate slow recoveries and a persistent slowdown in productivity growth when accounting for the empirical discrepancy between the realised and expected changes to the second-moment of fundamentals. Keywords: Uncertainty, R&D, Innovation, Productivity, Great Recession, Intangible Capital, Slow Recoveries. JEL codes: O40, O41, O51. ∗Email:
[email protected]. y I would like to thank Renato Faccini who has provided academic and professional support. I also thank Tatsuro Senga, Gino Gancia, Haroon Mumtaz for their helpful comments and suggestions. In addition, I would like to extend my gratitude to the participants of the Macroeconomic Reading Group at Queen Mary University of London. 1 Introduction Following an unparalleled rise in uncertainty over the Great Recession, the U.S.