The inverse normal method, which is used to combine "P"-values from a series of statistical tests, requires independence of single test statistics in order to obtain asymptotic normality of the joint test statistic. The paper discusses the modification by <link rid="b10">Hartung (1999, "Biometrical Journal",...

Kim, Belaire-Franch and Amador ["Journal of Econometrics" (2002) Vol. 109, pp. 389-392] and Busetti and Taylor ["Journal of Econometrics" (2004) Vol. 123, pp. 33-66] present different percentiles for the same mean score test statistic. We find that the difference by a factor 0.6 is due to...

We estimate a linear and a piecewise linear Phillips curve model with regional labor market data for West German and Neue Länder. Employing regional observations allows us to country difference the data. This eliminates, under the assumption of homogeneous Länder, supply shocks and changes in...

The authors examine monthly inflation rates of five industrial countries. The application of tests against stationarity as well as tests against a unit root yield contradictory results. Thus, fractional integration allowing for long memory is a plausible model. The authors discuss and apply the...