Newcomers are important for the survival of online communities, but they are often unfamiliar with ingroup norms. Thus, their contributions often receive negative reactions and comments from established members. We study a novel intervention aimed at successfully socializing newcomers into...

We study the estimation of dynamic economic models for which some of the state variables are observed only occasionally by the econometrician—a common problem in many fields, ranging from industrial organization to marketing to finance. If such occasional state observations are serially...

This paper develops a method to flexibly adapt interpolation grids of value function approximations in the estimation of dynamic models using either NFXP (Rust, 1987) or MPEC (Su and Judd, 2012). Since MPEC requires the grid structure for the value function approximation to be hard-coded into...