ZEW Discussion Papers

Real options investment theory predicts current investment falls as uncertainty about market returns increases. In the case of R&D investment, which is usually considered an irreversible form of investment, this…

Real Options Theory, Uncertainty, R&D, Censored Regression�t (R&��@ubsi
Ðå€ may����uce ����et f����res affecting private R&D investment caused by incomplete appropriability of knowledge and financial…

In einer Reihe empirischer Studien sind die Wirkungen von Arbeitsbeschaffungsmaßnahmen (ABM) für Teilnehmer in Deutschland nach unterschiedlichen Gesichtspunkten mikroökonometrisch evaluiert worden. Auf der…

We analyze the wage effects of employment breaks of women entering motherhood using a novel within-firm matching approach where mothers' wages upon return to the job are compared with those of their female…

In diesem Beitrag wird auf der Basis von Paneldaten für die westdeutschen Bundesländer untersucht, ob und in welchem Maße der demographische Wandel sowie die unterschiedlichen politischen…

This literature review analyses the impacts of the EU ETS on competitiveness focussing on existing simulation studies. We have identified the choice of the reference scenario as the most critical issue for an…

This study examines reforms of public expenditure in industrialised countries over the past two decades. We distinguish ambitious and timid reformers and analyse in detail reform experiences in eight case…

The confidence that financial markets are able to discipline the debt behaviour of governments in the euro area is not very high. One possible reason could be that the European Central Bank accepts all European…

Theoretical considerations suggest that secrecy reduces spillovers almost completely through non-disclosure, while the disclosure requirement of patents generates some spillover and at the same time allows…