This paper examines power issues for the ADF and four break models (Perron 1989, Zivot and Andrews 1992) when the DGP corresponds to one of the break models. Choosing to test an incorrect break model can but need not greatly reduce the probability of rejecting the null. Break points that are...

If the researcher tests each model in a battery at the a % significance level, the probability that at least one test rejects is generally larger than a %. For five unit-root models, this paper uses Monte Carlo simulation and the inclusion-exclusion principle to show for a %=5% for each test,...

This paper presents unit-root test results for real exchange rates in ten Central and Eastern European transition countries during 1993:01-2003:12. Because of the shift from controlled to market economies and the accompanying crises, failed policy regimes and changes in exchange rate regimes,...

We estimate a multivariate unobserved components stochastic volatility model to explain the dynamics of a panel of six exchange rates against the US Dollar. The empirical model is based on the assumption that both countries' monetary policy strategies may be well described by Taylor rules with a...

New Zealand is acknowledged widely as the first country to implement a formal monetary policy agreement specifying an explicit inflation target. This agreement, signed in March 1990 between the Minister of Finance and the Governor of the Bank, was implemented under Section 9 of the Reserve Bank...

To measure real income growth over time a price index is needed to adjust for changes in the cost of living. The Consumer Price Index (CPI) is often used for this task but studies from several countries show the CPI is a biased measure of changes in the cost of living, leading to potentially...

Ethiopia has experienced a historically unprecedented increase in inflation, mainly driven by cereal price inflation, which is among the highest in Sub-Saharan Africa. Using monthly data over the past decade, we estimate error correction models to identify the relative importance of several...

This paper evaluates the inertial inflation hypothesis for Brazil during the 1970s and the first half of the 1980s. According to this hypothesis, (wage) indexation created a feedback mechanism such that one-time supply shocks were fully transmitted into permanent increases in inflation. First a...

This paper develops an error correction model with the aim of analysing the behaviour of prices in Kenya during 1974 -1996. In estimating the model, we first test for cointegration in the money and foreign exchange markets, using the Johansen procedure. The cointegrating vectors are then...

Inflation has proven to be an important obstacle to successful economic adjustment in many countries. Despite both internal and external shocks to the economy, Mozambique has succeeded in controlling the inflation to gain high economic growth. This paper provides an econometric analysis of the...