Over the past thirty five years coffee markets have been subject to market controls and regulations culminating in the liberalisation of coffee markets in the early 1990s. This paper models the relationship between the producers’ and world prices of coffee in Brazil, Guatemala and India...

This paper reports on research into the negative relationship between inflation and the markup. It is argued that this relationship can be thought of as ‘long-run’ in nature which suggests that inflation has a persistent effect on the markup and, therefore, the real wage. A ‘rule of...

This paper argues that because United States inflation has been nonstationary over the past 5 decades the body of empirical research that proceeds assuming explicitly or implicitly that inflation is stationary with constant mean is largely invalid. Using 50 years of US inflation data the...

Phillips curves have often been estimated without due attention to the underlying time series properties of the data. In particular, the consequences of inflation having discrete breaks in mean, for example caused by supply shocks and the corresponding responses of policymakers, have not been...

Phillips curves are often estimated without due attention being paid to the underlying time series properties of the data. In particular, the consequences of inflation having discrete breaks in mean have not been studied adequately. We show by means of simulations and a detailed empirical...

The effects of structural breaks in dynamic panels are more complicated than in time series models as the bias can be either negative or positive. This paper focuses on the effects of mean shifts in otherwise stationary processes within an instrumental variable panel estimation framework. We...

‘Modern’ Phillips curve theories predict inflation is an integrated, or near integrated, process. However, inflation appears bounded above and below in developed economies and so cannot be ‘truly’ integrated and more likely stationary around a shifting mean. If agents believe inflation...