This paper develops a dynamic general equilibrium model that is intended to help clarify the role of credit market frictions in business fluctuations, from both a qualitative and a quantitative standpoint. The model is a synthesis of the leading approaches in the literature. In particular, the framework exhibits a financial accelerator,' in that endogenous developments in credit markets work to amplify and propagate shocks to the macroeconomy. In addition, we add several features to the model that are designed to enhance the empirical relevance. First, we incorporate money and price stickiness, which allows us to study how credit market frictions may influence the transmission of monetary policy. In addition, we allow for lags in investment which enables the model to generate both hump-shaped output dynamics and a lead-lag relation between asset prices and investment, as is consistent with the data. Finally, we allow for heterogeneity among firms to capture the fact that borrowers have differential access to capital markets. Under reasonable parametrizations of the model, the financial accelerator has a significant influence on business cycle dynamics.

https://papers.ssrn.com/sol3/Delivery.cfm/nber_W6455.pdf?abstractid=226200&mirid=1

The Financial Accelerator in a Quantitative Business Cycle Framework

This paper reviews the recent literature on monetary policy rules. To organize the discussion, we exposit the monetary policy design problem within a simple baseline theoretical framework. We then consider the implications of adding various real word complications. We concentrate on developing results that are robust across a reasonable variety of competing macroeconomic frameworks. Among other things, we show that the optimal policy implicitly incorporates inflation targeting. We also characterize the gains from making credible commitments to fight inflation and consider the implications of frictions such as imperfect information and model uncertainty. Finally, we assess how proposed simple rules, such as the Taylor rule, square with the principles for optimal policy that we describe. We use this same metric to evaluate the recent course of U.S. monetary policy.

/pdf/the-science-of-monetary-policy-a-new-keynesian-perspective-2513aj8m00.pdf

The Science of Monetary Policy: A New Keynesian Perspective

We present a model embodying moderate amounts of nominal rigidities that accounts for the observed inertia in inflation and persistence in output. The key features of our model are those that prevent a sharp rise in marginal costs after an expansionary shock to monetary policy. Of these features, the most important are staggered wage contracts that have an average duration of three quarters and variable capital utilization.

/pdf/nominal-rigidities-and-the-dynamic-effects-of-a-shock-to-24aok45g1c.pdf

Nominal Rigidities and the Dynamic Effects of a Shock to Monetary Policy

The paper reviews the recent literature on monetary policy rules. We exposit the monetary policy design problem within a simple baseline theoretical framework. We then consider the implications of adding various real world complications. Among other things, we show that the optimal policy implicitly incorporates inflation targeting. We also characterize the gains from making a credible commitment to fight inflation. In contrast to conventional wisdom, we show that gains from commitment may emerge even if the central bank is not trying to inadvisedly push output above its natural level. We also consider the implications of frictions such as imperfect information.

/pdf/the-science-of-monetary-policy-a-new-keynesian-perspective-1hk1n82x2a.pdf

This paper reviews recent research that grapples with the question: What happens after an exogenous shock to monetary policy? We argue that this question is interesting because it lies at the center of a particular approach to assessing the empirical plausibility of structural economic models that can be used to think about systematic changes in monetary policy institutions and rules. The literature has not yet converged on a particular set of assumptions for identifying the effects of an exogenous shock to monetary policy. Nevertheless, there is considerable agreement about the qualitative effects of a monetary policy shock in the sense that inference is robust across a large subset of the identification schemes that have been considered in the literature. We document the nature of this agreement as it pertains to key economic aggregates.

Monetary Policy Shocks: What Have We Learned and to What End?

An analysis of the quantitative effects of agency costs in a real business cycle model, showing that these costs can explain why output growth displays positive autocorrelation at short horizons.

http://homepage.ntu.edu.tw/~yitingli/file/macro%20and%20money/Agency%20Costs,%20Net%20Worth,%20and%20Business%20Fluctuations.pdf

Agency Costs, Net Worth, and Business Fluctuations: A Computable General Equilibrium Analysis

This paper develops a computable general equilibrium model in which endogenous agency costs can potentially alter business-cycle dynamics. A principal conclusion is that the agency-cost model replicates the empirical fact that output growth displays positive autocorrelation at short horizons. This hump-shaped output behavior arises because households delay their investment decisions until agency costs are at their lowest--a point in time several periods after the initial shock. Copyright 1997 by American Economic Association.

Agency costs, net worth, and business fluctuations: A

Liquidity, loanable funds, and real activity☆

https://www.clevelandfed.org/~/media/content/newsroom and events/publications/working papers/1999/wp 9910 timing and real indeterminacy in monetary models pdf.pdf

Timing and real indeterminacy in monetary models

Recent monetary policy experience suggests a simple diagnostic for models of monetary non-neutrality. Suppose the central bank pegs the nominal interest rate below steady state for a reasonably short period of time. Familiar intuition suggests that this should be modestly inflationary, and a reasonable model should deliver such a prediction. We pursue this simple diagnostic in several variants of the familiar Dynamic New Keynesian (DNK) model. Some variants of the model produce counterintuitive inflation reversals where the effect of the interest rate peg can switch from highly inflationary to highly deflationary for only modest changes in the length of the interest rate peg. Curiously, this unusual behavior does not arise in a sticky information model of the Phillips curve.

Timothy S. Fuerst

Papers

Agency Costs, Net Worth, and Business Fluctuations: A Computable General Equilibrium Analysis

Agency costs, net worth, and business fluctuations: A

Liquidity, loanable funds, and real activity☆

Timing and real indeterminacy in monetary models

Inflation and Output in New Keynesian Models with a Transient Interest Rate Peg