We test existing superstar theories for the German soccer league. We use various measures for individual players’ performance and media presence to analyze whether performance and popularity can explain salaries and superstars in soccer. Moreover, we argue that quantile regression technique...

We analyze the determinants of the origin of domestic and international terrorism in a large panel data set of 159 countries spanning from 1970 to 2007. We show that terror increases with GDP per capita, a higher POLITY score measuring a more open and competitive political system and experiences...