This paper proposes simple Hausman-type tests to check for bias in the log-periodogram regression of a time series believed to be long memory. The statistics are asymptotically standard normal on the null hypothesis that no bias is present, and the tests are consistent. The use of the tests in...

Empirische Analysen mit Paneldaten sind aus der wirtschafts- und sozialwissenschaftlichen Forschung seit Beginn der 80er Jahren nicht mehr wegzudenken. Die Beliebtheit resultiert unter anderem aus der Möglichkeit, mithilfe von Paneldaten unbeobachtete Unterschiede zwischen den...

A multiple hypotheses two-stage testing for an object characterized by two separated families of hypothetical probability distributions is considered. We introduce two versions of procedure of multiple hypotheses testing in a pair of stages such that in the first stage we determine one family of...

In practice, multivariate dependencies between extreme risks are often only assessed in a pairwise way. We propose a test to detect when tail dependence is truly high{dimensional and bivariate simplifications would produce misleading results. This occurs when a significant portion of the...