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...

Overcoming long-term unemployment is a challenging task in which trust of the long-term unemployed in their caseworkers is a key issue. However, research about drivers of this trust is a white spot in the literature. The paper closes this gap. Embedded in a theoretical model at the...

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...

More than ten years after the seminal paper by Borjas and Bratsberg (1996) modeling the impact of skills on remigration the empirical evidence on that theory is still mixed. Our paper is to shed light on that issue. Using the GSOEP we test two hypotheses derived from Borjas and Bratsberg (1996)...