The authors present various matching estimators of the impact on earnings for individuals who attended public and private job training programs in Colombia. The authors estimate propensity scores by controlling for the wide variety of personal and socioeconomic background variables of those...

We assess the role of inequality, poverty and drug prohibition, in explaining homicide rates(HR) in Colombia using panel data at the municipality level between 1990 and 1998. We use maximum likelihood estimation to evaluate several specifications of spatial models. When we pool the data we find...