Business Cycles and Endogenous Uncertainty
Recessions are times of increased uncertainty and volatility at the micro level. This widely documented empirical pattern has been interpreted as the effect of uncertainty shocks, mediated by various frictions, on aggregate economic activity. We explore the hypothesis that the causation runs the opposite way: first moment shocks induce risky behavior, which in turn raises observed cross-sectional dispersion and time series volatility of individual economic outcomes. Specifically, we study the cyclical pattern of the dispersion of price changes, and the resulting changes in sales and employment at the firm-level. We formulate an imperfect information version of the standard model of monopolistic competition. The elasticity of demand differs across products, and firms are not sure about the elasticity of the demand they face, but learn it from their volume of sales. Due to a fixed operation cost, information is valuable to decide whether to exit the market. Idiosyncratic demand shocks impair learning. The model is fully microfounded and can be aggregated to study general equilibrium. Deviations from average prices are costly to the firm in terms of forgone profits, but the response of sale volumes is informative about market power. Bad economic times are the best times to price-experiment, as the opportunity cost of price mistakes is lower and exit looms large. Following a negative aggregate shock to nominal spending, firms at first keep their prices relatively high, in order to learn whether the demand for their product is sufficiently inelastic and resilient to survive, and then change them further by an amount that depends on what they have learned.
|Date of creation:||2011|
|Contact details of provider:|| Postal: Society for Economic Dynamics Marina Azzimonti Department of Economics Stonybrook University 10 Nicolls Road Stonybrook NY 11790 USA|
Web page: http://www.EconomicDynamics.org/
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- R?diger Bachmann & Steffen Elstner & Eric R. Sims, 2013.
"Uncertainty and Economic Activity: Evidence from Business Survey Data,"
American Economic Journal: Macroeconomics,
American Economic Association, vol. 5(2), pages 217-249, April.
- Steffen Elstner & Eric Sims & Ruediger Bachmann, 2010. "Uncertainty and Economic Activity: Evidence from Business Survey Data," 2010 Meeting Papers 614, Society for Economic Dynamics.
- Ruediger Bachmann & Steffen Elstner & Eric R. Sims, 2010. "Uncertainty and Economic Activity: Evidence from Business Survey Data," NBER Working Papers 16143, National Bureau of Economic Research, Inc.
- Eric R. Sims, 2012. "Uncertainty and Economic Activity: Evidence from Business Survey Data," Working Papers 014, University of Notre Dame, Department of Economics, revised Jun 2012.
- Joseph S. Vavra, 2013.
"Inflation Dynamics and Time-Varying Volatility: New Evidence and an Ss Interpretation,"
NBER Working Papers
19148, National Bureau of Economic Research, Inc.
- Joseph Vavra, 2011. "Inflation Dynamics and Time-Varying Uncertainty: New Evidence and an Ss Interpretation," 2011 Meeting Papers 126, Society for Economic Dynamics.
- David Berger & Joseph Vavra, 2015. "Dynamics of the U.S. Price Distribution," NBER Working Papers 21732, National Bureau of Economic Research, Inc.
- S. Lael Brainard & David M. Cutler, 1993. "Sectoral Shifts and Cyclical Unemployment Reconsidered," The Quarterly Journal of Economics, Oxford University Press, vol. 108(1), pages 219-243.
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