This paper investigates whether firms innovate persistently or discontinuously over time using an innovation panel data set on German manufacturing and service firms for the period 1994-2002. We find that innovation behaviour is permanent at the firm-level to a very large extent. Using a dynamic...

We study a two-stage R&D project with an abandonment option. Two types of uncertainty influence the decision to start R&D. Demand uncertainty is modelled as a lottery between a proportional increase and decrease in demand. Technical uncertainty is modelled as a lottery between a decrease and...

This paper investigates whether firms innovate persistently or discontinuously over time using an innovation panel data set on German manufacturing and service firms for the period 1994–2002. It turns out that innovation behaviour is permanent at the firm–level to a very large extent. Using...

This paper studies the impact of process and product innovations introduced by firms on employment growth in these firms. A simple model that relates employment growth to process innovations and to the growth of sales separately due to innovative and unchanged products is developed and estimated...

Recent empirical evidence has shown that firm's innovation behavior exhibits high persistency but not much is known about potential contingencies affecting the degree of persistence. This paper focuses on the role of the local knowledge environment and asks how local knowledge spillovers affect...

We study a two-stage R&D project with an abandonment option. Two types of uncertaintyinfluence the decision to start R&D. Demand uncertainty is modelled as a lottery between aproportional increase and decrease in demand. Technical uncertainty is modelled as a lotterybetween a decrease and...

We study the impact of process and product innovations introduced by firms on employment growth with random samples of manufacturing and services from France, Germany, Spain and the UK for 1998–2000, totaling about 20,000 companies. We develop and estimate a model relating firms' and...

We study a two-stage R&D project with an abandonment option. Two types of uncertainty influence the decision to start R&D. Demand uncertainty is modelled as a lottery between a proportional increase and decrease in demand. Technical uncertainty is modelled as a lottery between a decrease and...

Der Beitrag untersucht, inwieweit hinter der oft konstatierten Investitionsschwäche der europäischen Wirtschaft eine Strukturverschiebung von materiellen zu immateriellen Investitionen steht. Da letztere nur zum Teil unter den Investitionsbegriff der Volkswirtschaftlichen Gesamtrechnung...

This paper examines the links between innovation and productivity in service enterprises. For this purpose, we use micro data from the Community Innovation Survey 2008 in Germany, Ireland and the United Kingdom, and estimate an augmented structural model. Our results indicate that innovation in...