We study the impact of the access charges of copper and fiber unbundling on an incumbent's incentives to invest in fiber access networks. Once the fiber deployment is in place, the incumbent and the entrant compete for consumers in both copper and fiber markets. We show that when the regulator...

This paper introduces a new approach to understanding investment. The distinctive feature of our approach is that shocks to the economic fundamentals have both persistent and transitory components, and that firms must disentangle the persistent from the transitory shocks. The model generates...

We use changes in Brazil s tax on capital inflows from 2006 to 2011 to test for direct portfolio effects and externalities from capital controls on investor portfolios. The analysis is structured based on information from investor interviews. We find that an increase in Brazil s tax on foreign...

Recent years have seen an unprecedented increase in the provision of R&D tax incentives. A growing empirical literature suggests that R&D tax incentives are instrumental in raising domestic R&D activity. In policy debates this finding is often interpreted to lend support to the notion that R&D...

This paper investigates empirically firm investment behavior in research and development (R&D). Firms make investments in R&D in order to produce innovations. These innovations in turn improve the firm's future productivity level, pro tability and incentives to invest in R&D. Using German...

Expanding airports is a topic which can easily make it to the first page of the national press. But this is highly unlikely as "bad news" is "good news" and most often failures and scandals make it to the front page. Berlin airport or the on-going failure to open up a nearly-complete new airport...