The concept of cointegration (see e.g., Engle and Granger, 1987; Johansen, 1988) has extensively been used to model equilibrium relationships (see e.g., Johansen and Juselius, 1990; Ericsson, 1998). The links between economic and econometric concepts are now well understood and they have become part of...

The former German chancellor Helmut Schmidt holds that despite the huge transfers from West to East Germany the East German economy does not take off as it was widely expected. We argue it is not despite these transfers but because of them. Building on the common features of the extension of the...