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...

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...

In the regression discontinuity design, it is common practice to asses the credibility of the design by testing whether the means of baseline covariates do not change at the cutoff (or threshold) of the running variable. This practice is partly motivated by the stronger implication derived by...