Political scientists often analyze data in which the observational units are clustered into politically or socially meaningful groups with an interest in estimating the effects that group-level factors have on individual-level behavior. Even in the presence of low levels of intracluster...

In the social sciences, randomized experimentation is the optimal research design for establishing causation. However, for a number of practical reasons, researchers are sometimes unable to conduct experiments and must rely on observational data. In an effort to develop estimators that can...

Recent studies have derived optimal invoicing strategies for an exporting firm when exchange rates are uncertain. However, these studies fail to explain trade transacted in a third currency (vehicle currency). In this study, we extend existing models to include the possibility that trade occurs...