In this paper we propose a new way to formulate optimal policy based on a quadratic intertemporal welfare function where the dynamic constraint is based on a VAR model of the economy which we call the PVAR method. We argue that the VAR under control should not be derived simply by replacing the...

A well known characteristic of flexible exchange rates is their volatility, with result that their movement can be closely approximated by a random walk. One of the attractions of the monetary model of the exchange rate is its ability to offer an explanation of this volatility. A major drawback...

We propose a model-based measure of sovereign credit ratings derived solely from the fiscal position of a country: a forecast of its future debt liabilities, and its potential to use tax policy to repay these. We use this measure to calculate credit ratings for fourteen European countries over...

This lecture is about how best to evaluate economic theories in macroeconomics and finance, and the lessons that can be learned from the past use and misuse of evidence. It is argued that all macro/finance models are `false' so should not be judged solely on the realism of their assumptions. The...

This paper argues that the crisis was an outcome of EMU: setting a common monetary policy for countries with different initial inflation rates. The crisis countries were those with high inflation rates which then had negative real interest rates and consequently over-borrowed. Current policy...

The immediate background to this paper is the downgrade of the U.K.'s credit rating in February 2013, the market's view that this should have occurred earlier and the emphasis in fiscal policy on reducing debt rather than recovery from recession. We propose a measure of the U.K. sovereign credit...

We find that forecasts from DSGE models are not more accurate than either times series models or official forecasts, but neither are they any worse. We also find that all three types of forecast failed to predict the recession that started in 2007 and continued to forecast poorly even after the...

A methodology for generating sovereign credit ratings based on macroeconomic theory is proposed. This is applied to quarterly U.S. data from 1970 to 2011. Over this period the official credit rating of U.S. Treasury securities has been of the highest quality. In contrast, the model-based measure...

This paper examines the appreciation of the dollar over the period 1980-85. The standard theories try to explain the increased demand for dollar assets by differential rates of return on bonds or by "safe-haven" arguments associated with the lower riskiness of United States assets. Neither of...

Recent concern about the difficulty of obtaining structurally stable models of money demand combined with the removal of capital controls have drawn attention to the theory of currency substitution (CS). The purpose of this paper is to examine whether CS is a relevant factor in the demand for...