1. German Public Opinion on Immigration and Integration.;Migration Policy Institute, Transatlantic Council of Migration,,2009
2. A Comparative Analysis of European Islamophobia: France, UK, Germany, Netherlands, and Sweden,;Journal of Islamic and Near Eastern Law,2017
3. Negative Partisanship: Why Americans Dislike Parties But Behave Like Rabid Partisans,;Advances in Political Psychology,2018