of causation in terms of Lewis's possible-world semantics, and reformulates the statistical potential outcome framework …

Computer and Internet use, especially in developing countries, has expanded rapidly in recent years. Even in light of … Internet penetration, both currently and over time, we examine panel data for 161 countries over the 1999-2004 period. We … factors associated with computer and Internet penetration do not differ substantially between developed and developing …

induced variation in broadband Internet availability that gives rise to variation in ICT skills across countries and German …