Distributed Denial of Service (DDoS) attacks are a frequently occurring type of cybercrime, with potentially large costs to the real economy. We propose a simple model of the size and direction of DDoS attacks. The main predictions of the model are that effective botnets are located in...

Exchange rate risk will only have a small effect on international transactions as long as this risk is easily tradable. We find evidence indicating that the availability of currency futures can explain the relatively small impact of exchange rate volatility on trade. The impact of exchange rate...

Innovation seldom has purely domestic causes and consequences, but how can a European innovation policy complement or substitute national policies? Taking the subsidiarity principle as a starting point, this report discusses the economic rationale of a European innovation policy. Explorative...

During the last twenty years the share of researchers in the workforce has been rising in OECD countries. In the same period, the distribution of schooling has become more equal. This paper proposes that the rise in the proportion of researchers is caused by the decline in schooling...

This paper estimates the effects of the formation and development of the Internal Market (IM) in the European Union on income per capita for the EU and specifically for the Netherlands, since its appearance in 1958. It does so in two stages. First, gravity equations are estimated to identify...

Despite the centrality of incentives for innovation in models of economic growth, there is little systematic evidence that the value of technologies varies with market size and institutional arrangements. This paper presents micro-evidence indicating the value of patent rights for a given...

Reduced credit supply in the years 2008 and 2009 should have resulted in lower growth in industries that are more dependent on external finance. This effect should have been stronger in countries with a more prominent and/or more leveraged financial system. We focus on the OECD countries and,...

Targeted advertising can benefit consumers through lower prices for access to websites. Yet, if consumers dislike that websites collect their personal information, their welfare may go down. We study competition for consumers between websites that can show targeted advertisements. We find that...

In GRAVITY WITH GRAVITAS: A SOLUTION TO THE BORDER PUZZLE, Anderson and Van Wincoop (2003) estimate what trade between US states and Canadian provinces would have been if the border between Canada and the United States had not existed. They showed that computing the border effect requires...