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Working Paper
Reply to \"Generalizing the Taylor principle\": a comment
Farmer, Waggoner, and Zha (2009) show that a new Keynesian model with a regime-switching monetary policy rule can support multiple solutions that depend only on the fundamental shocks in the model. Their note appears to find solutions in regions of the parameter space where there should be no bounded solutions, according to conditions in Davig and Leeper (2007). This puzzling finding is straightforward to explain: Farmer, Waggoner, and Zha (FWZ) derive solutions using a model that differs from the one to which the Davig and Leeper (DL) conditions apply. In addition, FWZ impose cross-equation ...
Conference Paper
Empirical analysis of policy interventions
We construct linear projections of macro variables conditional on hypothetical paths of monetary policy, using as an example an identified VAR model. Hypothetical policies are restricted to ones where both the policy intervention and its impacts are consistent with history?otherwise the linear projections are likely to be unreliable. We use the approach to interpret Federal Reserve decisions, modeling their frequent reassessment in light of new information about the tradeoffs policymakers face. The interventions we consider matter: they can shift projected paths and probability distributions ...
Working Paper
When do long-run identifying restrictions give reliable results?
Many recent papers have tried to identify behavioral disturbances in vector autoregressions (VAR's) by imposing restrictions on the long-run effects of shocks. This paper argues that this approach will support reliable structured inferences only if the underlying economy satisfies strong restrictions. Absent restrictions linking long-run and short-run dynamics, every decomposition of a VAR is essentially equally consistent with any long-run restriction. Further, dynamic common factor restrictions must hold if the scheme is to work properly in small models estimated using time-aggregated data. ...
Working Paper
Sovereign Default and Monetary Policy Tradeoffs
The paper is organized around the following question: when the economy moves from a debt-GDP level where the probability of default is nil to a higher level?the ?fiscal limit?? where the default probability is non-negligible, how do the effects of routine monetary operations designed to achieve macroeconomic stabilization change? We find that the specification of the monetary policy rule plays a critical role. Consider a central bank that targets the risky rate. When the economy is near its fiscal limit, a transitory monetary policy contraction leads to a sustained rise in inflation, even ...
Working Paper
Post econometric policy evaluation: a critique
An increasingly popular approach to policy evaluation involves applying the parameters calibrated for a real business cycle model that does not include policy to a different model, where policy does affect private decisions. This technique, in effect, estimates a model that misspecifies how private behavior depends on policy. The calibrated parameters depend on policy behavior, but calibrators overlook this dependence when projecting policy effects. This procedure repeats the "Keynesian" errors that Lucas (1976) noted in his influential critique of (then) standard methods of econometric ...
Working Paper
Generalizing the Taylor principle
Recurring change in a monetary policy function that maps endogenous variables into policy choices alters both the nature and the efficacy of the Taylor principle---the proposition that central banks can stabilize the macroeconomy by raising their interest rate instrument more than one-for-one in response to higher inflation. A monetary policy process is a set of policy rules and a probability distribution over the rules. We derive restrictions on that process that satisfy a long-run Taylor principle and deliver unique equilibria in two standard models. A process can satisfy the Taylor ...
Working Paper
Endogenous monetary policy regime change
This paper makes changes in monetary policy rules (or regimes) endogenous. Changes are triggered when certain endogenous variables cross specified thresholds. Rational expectations equilibria are examined in three models of threshold switching to illustrate that (i) expectations formation effects generated by the possibility of regime change can be quantitatively important; (ii) symmetric shocks can have asymmetric effects; (iii) endogenous switching is a natural way to formally model preemptive policy actions. In a conventional calibrated model, preemptive policy shifts agents? expectations, ...
Working Paper
Monetary-fiscal policy interactions and fiscal stimulus
Increases in government spending trigger substitution effects both inter- and intra-temporal and a wealth effect. The ultimate impacts on the economy hinge on current and expected monetary and fiscal policy behavior. Studies that impose active monetary policy and passive fiscal policy typically find that government consumption crowds out private consumption: higher future taxes create a strong negative wealth effect, while the active monetary response increases the real interest rate. This paper estimates Markov-switching policy rules for the United States and finds that monetary and fiscal ...