The internet has become an important data source for the Social Sciences because these data are available without lags, can be regarded as involuntary surveys and hence have no observer effect, can be geo-labeled, are available for countries across the globe and can be viewed in continuous time...

This paper considers factor forecasting with national versus factor forecasting with international data. We forecast German GDP based on a large set of about 500 time series, consisting of German data as well as data from Euro-area and G7 countries. For factor estimation, we consider standard...

Modem neo-Keynesian, new classical and real business cycle models typically differ in the degree to which they incorporate certain long-run or even short-run neutrality propositions. Given the importance of these neutrality propositions, it is somewhat surprising how little firm international...