In this paper, we investigate the use of interactive effect or linear factor models in regional policy evaluation. We contrast treatment effect estimates obtained by Bai (2009)'s least squares method with the popular difference in difference estimates as well as with estimates obtained using...

The view is widespread that there are just two options for the future of the Eurozone – either it is complemented by a fiscal union, or it will fall apart. In this paper, we discuss five possible elements of a fiscal union, of which three are in the centre of the current debate on fiscal union...