-
Improved instrumental variables estimation of simultaneous equations under co...
In this paper we develop estimation techniques and a specification test for the validity of instrumental variables allowing for conditionally heteroskedastic disturbances. We... -
Modelling heterogeneity and dynamics in the volatility of individual wages (r...
This paper presents a model for the heterogeneity and dynamics of the conditional mean and conditional variance of individual wages. A bias-corrected likelihood approach, which... -
Selection in a field experiment with voluntary participation (replication data)
The external validity of experiments in economics can be ensured only if participants reflect the relevant market population. We study data from a promotional campaign of...
