Abstract
Based on the principal-agent theory, this paper analyses the historical emergence of policies supporting spin-off activities since the end of the Second World War, focusing on Germany as an exemplary case study. It argues that the significance of spin-offs in research policy is not an effect of their hard-and-fast number or their direct economic impacts but rather of their symbolic meaning, providing legitimacy for academic institutions and funding agencies in controversial public debates about science and technological policies. Spin-offs, like technology transfer at large, are important to the rationale and legitimacy of science and research policy