Interpreting Granger causality as economic causality implies that the underlying VAR model is a structural economic model. However, this is wrong if simultaneity occurs. Magnitude and stability of possible errors are analysed in a simulation study. It is shown that economic misinterpretations of...

Weak identification is a well known topic for linear multiple equation models. However, little is known whether this problem also matters for probit models with endogenous covariates. Therefore, the behaviour of the usual z-statistic in case of weak identification is analysed in a simulation...

"Many empirical studies for Germany consider either the training activities of the unemployed or those of employees. However, a comprehensive comparison of both groups had not been conducted until now. The paper closes this gap. Using data from the latest time-use survey (Zeitbudgeterhebung) of...

More than 10 years after the seminal paper by Borjas and Bratsberg (1996), modelling the impact of skills on remigration, the empirical evidence on that theory is still mixed. Our article is to shed light on that issue. Using the German Socio-Economic Panel (GSOEP) we test two hypotheses derived...