Vladislav Damjanovic

Ordering Policy Rules with an Unconditional Welfare Measure

The unconditional expectation of social welfare is often used to assess alternative macroeconomic policy rules in applied quantitative research. It is shown that it is generally possible to derive a linear-quadratic problem that approximates the exact non-linear problem where the unconditional expectation of the objective is maximised and the steady-state is distorted. Thus, the measure of policy performance is a linear combination of second moments of economic variables which is relatively easy to compute numerically, and can be used to rank alternative policy rules. The approach is applied to a simple Calvo-type model under various monetary policy rules.

Optimal Time Consistent Monetary Policy

We discuss the issue of time consistency of monetary policy. We develop a simple and intuitive procedure to derive analytically the unconditionally optimal (UO) policy in a general linear-quadratic set-up, a perspective stressed by Taylor (1979) and Whiteman (1986). We compare the UO perspective on optimal monetary policy with alternative approaches. We use our approach in simple backward- and forward-looking models and argue that the UO perspective is worthy of renewed interest.

Linear-Quadratic Approximation to Unconditionally Optimal Policy: The Distorted Steady-State

This paper establishes that one can generally obtain a purely quadratic approximation to the unconditional expectation of social welfare when the steady-state is distorted. A specific example is provided employing a canonical New Keynesian model. Unlike in the non-distorted steady state case, the approximate loss function is not defined simply over terms in inflation and output. Furthermore, optimal steady state inflation and the nominal interest rate are positive.

Aggregate Dynamics with Heterogeneous Agents and State-Dependent Pricing

This paper examines the consequences of (S, s) pricing rules in a dynamic economy with heterogeneous costs of price adjustment. We construct the stationary distributions for aggregate output and prices for our model economy. As a result of our assumption of heterogeneous costs we find that: (i) Some sectors change prices more regularly than others; (ii) Price changes are asynchronized (relative prices may be moving in opposite directions in different sectors); (iii) The economy may be more sensitive to demand shocks. There is broad empirical support for the predictions of the model.

Optimal Monetary Policy Rules from a Timeless Perspective

The timelessly optimal monetary policy proposed by Woodford (2003) may be dominated by alternative timeless policies. We provide a formal justification for these alternative policies. We demonstrate why discount rates do not matter and establish that optimizing over the unconditional expectation of the policy criterion function recovers these alternative strategies.