We propose a method to explore the causal transmission of an intervention through two endogenous variables of interest. We refer to the intervention as a catalyst variable. The method is based on the reduced-form system formed from the conditional distribution of the two endogenous variables...

This paper studies models of processes generating censored outcomes with endogenous explanatory variables and instrumental variable restrictions. Tobit-type left censoring at zero is the primary focus in the exposition. Extension to stochastic censoring is sketched. The models do not specify the...

How does violence affect social capital? I argue that its impact depends on two factors: i) the ability to identify the perpetrating group, and ii) the intensity of the violence. These factors help to reconcile the seemingly contradictory effects of violence on social capital presented in the...

This document studies the effect of the homicide rate on internal migration in Mexico. Reduced form evidence shows that net migration of skilled workers decreases into local labor markets where homicide rates increased after 2007, suggesting workers prefer destinations with lower homicide rates....