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Working Paper
Investment and interest rate policy: a discrete time analysis
This paper analyzes the restrictions necessary to ensure that the interest rate policy rule used by the central bank does not introduce local real indeterminacy into the economy. It conducts the analysis in a Calvo-style sticky price model. A key innovation is to add investment spending to the analysis. In this environment, local real indeterminacy is much more likely. In particular, all forward-looking interest rate rules are subject to real indeterminacy.
Journal Article
Money growth and inflation: does fiscal policy matter?
Is inflation (in the often-quoted words of Milton Friedman) "always and everywhere a monetary phenomenon"? Some say no, arguing that inflation is controlled not only by the central bank but also by the fiscal authority. This Commentary authors explore their argument, known as the fiscal theory of the price level.
Working Paper
Optimal Contracts, Aggregate Risk, and the Financial Accelerator
This paper derives the optimal lending contract in the financial accelerator model of Bernanke, Gertler and Gilchrist (1999), hereafter BGG. The optimal contract includes indexation to the aggregate return on capital, household consumption, and the return to internal funds. This triple indexation results in a dampening of fluctuations in leverage and the risk premium. Hence, compared with the contract originally imposed by BGG, the privately optimal contract implies essentially no financial accelerator.
Journal Article
Monetary policy and asset prices with imperfect credit markets
The Modigliani-Miller theorem is fundamental to the theory of corporate finance. One of the theorem's immediate implications is that there is no reason for the monetary authority to respond to asset prices. This article posits a world in which the Modigliani-Miller theorem does not hold. The authors assume that the amount of an entrepreneur's external financing is limited by the amount of collateral she holds. They examine the implications for the monetary authority in such an environment.
Working Paper
Monetary policy in a world without perfect capital markets
This working paper examines a theoretical model in which an entrepreneur?s net worth affects his ability to finance current activity. Net worth, in turn, is determined by asset prices, which can be affected by monetary policy. In this environment, the central bank plays a welfare-improving role by responding to asset price and technology shocks.
Working Paper
Term Premium Variability and Monetary Policy
Two traditional explanations for the mean and variability of the term premium are: (i) time-varying risk premia on long bonds, and (ii) segmented markets between long- and short-term bonds. This paper integrates these two approaches into a medium-scale DSGE model. We consider two sources of business cycle variability: shocks to total factor productivity (TFP), and shocks to the marginal efficiency of investment (MEI). The ability of the risk approach to match the first moment of the term premium depends upon the relative importance of these two shocks. If MEI shocks are an important driver of ...
Working Paper
Timing and real indeterminacy in monetary models
An increasingly common approach to the theoretical analysis of monetary policy ensures that a proposed policy does not introduce real indeterminacy?and thus sunspot fluctuations?into the model economy. Policy is typically conducted in terms of directives for the nominal interest rate. This paper uses a discrete-time, money-in-the-utility function model to demonstrate how seemingly minor modifications in the trading environment result in dramatic differences in the policy restrictions needed to ensure real determinacy. These differences arise because of the differing pricing equations for the ...
Working Paper
Capital trading, stock trading, and the inflation tax on equity: a note
The authors show that there is more responsiveness of consumption and output to changes in the money supply than exists in the standard neoclassical growth models.
Working Paper
Privately optimal contracts and suboptimal outcomes in a model of agency costs
This paper derives the privately optimal lending contract in the celebrated financial accelerator model of Bernanke, Gertler and Gilchrist (1999). The privately optimal contract includes indexation to the aggregate return on capital, household consumption, and the return to internal funds. Although privately optimal, this contract is not welfare maximizing as it leads to a sub-optimally high price of capital. The welfare cost of the privately optimal contract (when compared to the planner outcome) is significant. A menu of time-varying taxes and subsidies can decentralize the planner?s ...
Working Paper
Inflation and output in New Keynesian models with a transient interest rate peg
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 ...