Rational expectations are often used as a strong argument against policy activism, as they may undermine or neutralize the policymaker’s actions. Although this sometimes happens, rational expectations do not always imply policy invariance or ineffectiveness. In fact, in certain circumstances...

The size and economic relevance of Europe may imply a new role for the EURO in the international financial markets. But will the EURO compete with the $US and the Yen for a place in the basket of international currencies? Will that induce a bipolar or indeed tri-polar system, and with what...

This paper analyses four popular themes in the debate about the transition to monetary union: (a) fiscal discipline creating gains in credibility; (b) there being perceptible risk of a bail out for the highly indebted countries; (c) budgets being successfully cut to the required 3% limit in...

The main obstacles to coordinating policies in practice are uncertainty about the correct model to use for policy design, and uncertainty about external variables. This paper examines the former problem. Numerical calculations using ten models from the recent Brookings Multicountry comparison...

Empirical fiscal policy reaction functions based on ex-post data cannot be said to describe fiscal policymakers intentions because they utilise data which did not exist when their decisions were made. A characterisation of what fiscal policy makers were trying to do requires real time data. This...

The EMS's robustness in the face of stochastic shocks is studied, using the Liverpool World Model and the optimal strategy algorithm of Brandsma and Hughes Hallett. The EMS began life in 1979 with a system design permitting regular parity changes; we find this design to be relatively unstable,...

The effectiveness of cyclically adjusted balances (CABs) as an indicator of the health of public finances depends on the accuracy with which cyclically adjusted figures can be calculated in real time. This paper measures the accuracy of such figures using a specially constructed real time data...

Economic and monetary reunification in Germany has proved to be more expensive than previously thought - and not just for the Germans. If a `Mezzogiorno' problem of continuing fiscal transfers to the East and possible migration flows westwards are to be avoided, there must be convergence in...

We present three different models of imperfect transparency in monetary policy: political transparency, economic transparency and constructive ambiguity. The first two show that transparency reduces the variability of inflation and the output gap but does not affect their average levels. But if...

This paper distinguishes between some obvious necessary and sufficient conditions for adopting the target zone proposal as a means of improving macroeconomic performance. The necessary conditions may be satisfied fairly easily, but it is a good deal more difficult to design a targeting system...