This paper introduces a new indicator of core inflation for New Zealand, estimated using a dynamic factor model and disaggregate price data. Using disaggregate price data we can directly compare the predictive performance of our core indicator with a wide range of other ‘core inflation’...

In this paper, stochastic simulations of the Reserve Bank of New Zealand's new macroeconomic model, FPS, are used to examine the issue of which price index monetary policy should stabilise in a small open economy. Under the class of policy rules considered, targeting a measure of domestic...

Real Business Cycle (RBC) and Dynamic Stochastic General Equilibrium (DSGE) methods have become essential components of the macroeconomist’s toolkit. This literature review stresses recently developed (often Bayesian) techniques for computation and inference, providing a supplement to the...

This paper defines an efficient rule for monetary policy as one that minimises a weighted sum of output variance and inflation variance. It derives several results about the efficiency of alternative rules in a simple macroeconomic model. First, efficient rules can be expressed as "Taylor rules"...

Recently it has been argued that a monetary policy of nominal income targeting would result in dynamically unstable processes for output and inflation. That result holds in a theoretical model that includes backward-looking IS and Phillips curve relations, but these are rather special and...

The ability of financial frictions to amplify the output response of monetary policy, as in the financial accelerator model of Bernanke et al (1999), is analysed for a wider class of policy rules where the policy interest rate responds to both inflation and the output gap. When policy makers...

Over the last few years, monetary policy in New Zealand has focused on reducing strong demand and inationary pressures. It has been commented that this task has been frustrated by a weakening of the monetary policy transmission mechanism in New Zealand. In this paper we draw upon a range of...

There is a common perception that the prices of unrelated commodities move together. This paper re-examines this notion, using a measure of co-movement of economic time series called concordance. Concordance measures the proportion of time that the prices of two commodities are concurrently in...

This paper examines the duration and magnitude of cycles in commodity prices. We find that for the majority of commodities, price slumps last longer than price booms. How far prices fall in a slump is found to be slightly larger than how far they tend to rebound in a subsequent boom. We also...

It is standard to model the output-inflation trade-off as a linear relationship with a time-invariant slope. We assess empirical evidence for three types of nonlinearity in the short-run Phillips curve. At an empirical level, we aim to discover why large negative output gaps in Japan during the...