The main goal of this thesis is to investigate the reasons why firms do often adopt inefficient technologies even when superior ones are widely available, and to assess their consequences. From a macroeconomic perspective it has been emphasized that differences in the adoption and diffusion...

This dissertation contributes to the empirical literature on labor market dynamics by using recently available and extraordinary data to analyze the following questions: 1) With regard to employment, are there really low dynamics in the German labor market as it is discussed in the literature?...

Das Papier untersucht die Rolle von Frühindikatoren bei der Erstellung von Konjunkturprognosen. Gegenstand der Analyse sind die Fragen: Welche Kriterien sollten Frühindikatoren generell erfüllen bzw. was sollten Frühindikatoren leisten? Inwieweit erfüllen die gängigen Indikatoren diese...

This thesis investigates the consequences of model uncertainty and persistence in consumption habits and price-setting behaviour in a New Keynesian model.As the decision of a central bank is made in an uncertain environment, the analysis of uncertainty is essential in monetary policy models. In...

In recent years the New Keynesian Model with price stickiness of the Calvo type has become the most widely used theoretical framework for addressing various normative issues such as how optimal monetary and fiscal policy should be conducted. However, the New Keynesian Model has been criticized...