In this paper we show that findings of an apparently instable popularity function of U.S. presidents, as reported in the previous literature, are likely the consequence of the common use of linear estimation techniques. Employing Penalized Spline Smoothing in the context of Additive Mixed Models...

This paper shows that the availability of dual citizenship, or here Overseas Citizenship of India (OCI), leads to higher naturalization rates in the country of residence. The analysis is based on three distinct naturalization rates, calculated on the basis of annual immigration flows and...