Value added is a common tool in educational research on effectiveness. It is often modeled as a (prediction of a) random effect in a specific hierarchical linear model. This paper shows that this modeling strategy is not valid when endogeneity is present. Endogeneity stems, for instance, from a...

Productivity differences can explain differences in economic growth across countries. It has been demonstrated that the presence of a foreign-owned multinational enterprise (MNE) in a developing country is one of the most important methods through which technology transfer occurs. This presence...

This paper provides a direct test of how fixed export costs and productivity jointly determine firm-level export behavior. Using Chilean data, we construct indices of fixed export costs for each industry-region-year triplet and match them to domestic firms. Our empirical results show that firms...

Average treatment effects estimands can present significant bias under the presence of outliers. Moreover, outliers can be particularly hard to detect, creating bias and inconsistency in the semi-parametric ATE estimads. In this paper, we use Monte Carlo simulations to demonstrate that...

Outliers can be particularly hard to detect, creating bias and inconsistency in the semi-parametric estimates. In this paper, we use Monte Carlo simulations to demonstrate that semi-parametric methods, such as matching, are biased in the presence of outliers. Bad and good leverage point outliers...

Inequality in Bolivia is normally measured through income. However, the construction of a socio-economic index (ISE), using the four available censuses 1976, 1992, 2001 and 2012, permits to analyze inequality in long-term as well as under a multidimensional approach. Through the application of...