Most existing empirical work on technology diffusion assumes technologies to remain constant throughout the diffusion process. However, many consumer technologies improve significantly over time. Using data on the characteristics of new mobile handsets over a ten-year period and controlling for...

In this paper, I present global evidence on the impact of expansion in mobile telephony and broadband Internet services on economic development at the subnational level. Leveraging two decades of satellite data on nightlights and the global expansion of 2G and 3G mobile networks in 3419...

We investigate the relationship between cell phones and brain cancer using brain cancer death rates for 86 countries between 1990 and 2014 from the World Health Organization and country-level mobile phone subscription rates from the World Bank. We estimate difference-in-difference models...

The current problems in mobile telephony are leading critics to make overly pessimistic predictions that 3G - the third-generation mobile phone system - will never become profitable. However, the resulting calls not to introduce 3G and instead directly back alternative wireless technologies...

This article studies the role of technology drivers in catching up at different stages of development. Countries can be at different stages of development when entering in a new catching-up cycle. Thus, the technological drivers of growth [technological capabilities, external spillovers,...

in großer Anteil der multinational tätigen Großunternehmen ist in technologieintensiven, dynamischen Branchen tätig und verfügt über ein breites Spektrum an technologischen Ressourcen. In den vergangenen Dekaden hat ein Großteil dieser Unternehmen zunehmend Wertschöpfungsleistungen an...

This paper uses a gravity framework to investigate the effects of distance as well as subnational and national borders in knowledge spillovers. Drawing on the NBER Patent Citations Database, we examine patent citations data at metropolitan level within the U.S. and the 38 largest patent-cited...