The economic literature has largely overlooked the importance of repeat and circular migration. The paper studies this behaviour by analyzing the number of exits and the total number of years away from the host country using count data models and panel data from Germany. More than 60% of...

The Paper evaluates the German health care reform of 1997, using the individual number of doctor visits as outcome measure. A new econometric model, the Probit-Poisson-log-normal model with correlated errors, describes the data better than existing count data models. Moreover, it has an...

In the case of natural monopolies there tends to be a trade-off between a higher quality of output provided by private firms, and a better access for poor consumers provided by public firms. This is partly the reflection of differences in objectives by private and public firms. The former tend...