We study the estimation of causal effects on group-level parameters identified from microdata (e.g., child penalties). We demonstrate that standard one-step methods (such as pooled OLS and IV regressions) are generally inconsistent due to an endogenous weighting bias, where the policy affects...

This paper studies the regional convergence of sub-national states in the case of Mercosur from 1961 to 2005 by using a non-parametric technique of clustering under the concept of \regime of performance". In the first section, a review in interregional convergence is shown for the Mercosur case....

Instrumental variables (IV) methods are central to applied microeconomics. While classical approaches assume linear models with constant effects, recent literature has shifted toward the local average treatment effect (LATE) framework to accommodate heterogeneous treatment effects. This paper...