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Learning about fiscal policy and the effects of policy uncertainty
The recent crisis in the United States has often been associated with substantial amounts of policy uncertainty. In this paper we ask how uncertainty about fiscal policy affects the impact of fiscal policy changes on the economy when the government tries to counteract a deep recession. The agents in our model act as econometricians by estimating the policy rules for the different fiscal policy instruments, which include distortionary tax rates. ; Comparing the outcomes in our model to those under full-information rational expectations, we find that assuming the agents are not instantaneously aware of the new fiscal policy regime (or policy rule) in place leads to substantially more volatility in the short run and persistent differences in average outcomes
AUTHORS: Hollmayr, Josef; Matthes, Christian
Tales of Transition Paths: Policy Uncertainty and Random Walks
What happens when fiscal and/or monetary policy changes systematically? We construct a DSGE model in which agents have to estimate fiscal and monetary policy rules and assess how uncertainty surrounding the conduct of policymakers influences transition paths after policy changes. We find that policy changes of the magnitude often considered in the literature can lead private agents to hold substantially different views about the nature of equilibrium than would be predicted by a full information analysis. In particular, random walk-like behavior can be observed for a large number of periods in equilibrium, even though the models we use admit stationary dynamics under full-information rational expectations.
AUTHORS: Matthes, Christian; Hollmayr, Josef