This paper considers a dynamic model of the evolution of open source software projects, focusing on the evolution of quality, contributing programmers, and users who contribute customer support to other users. Programmers who have used open source software are motivated by reciprocal altruism to...

The rapid diffusion of open source software (OSS), the significant investments observed in OSS projects, and the new inter-firm collaborative possibilities enabled by such OSS projects have generated a substantial literature on the economics of OSS development. However, this literature mainly...

Established firms often face significant obstacles to innovation. As a solution, it has been suggested to form corporate ventures. Based on a sample of corporate and independent ventures in German manufacturing, we show that corporate ventures are more innovative than the control group, i.e. the...

This study focuses on the early stages of international innovation activities, i.e. the organizational processes through which promising ideas from around the globe are collected and evaluated. We ask: What characteristics make foreign knowledge interesting to domestic Ramp;D managers? We...

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...

In this paper we analyze the conditions under which firms decide to offshore innovation. We consider the role of internal technological capabilities and technological dynamism in the firm environment, distinguishing speed and uncertainty of technological change. Using unique data from the German...

Innovation success depends heavily on firm's ability to set priorities and select the most promising options from its project portfolio before the odds of success or failure become visible and reliable. We ask: What does previous innovation experience tell firms about what not to do in the...

This paper investigates the impact of in-house R&D and innovation management practices on innovation success in small and medium-sized firms (SMEs). While there is little doubt about the significance of technology competence for generating successful innovations, inhouse R&D activities may be a...