outliers can lead to detect spurious conditional heteroscedasticity and can also hide genuine ARCH effects. First, we derive …

regressions, and correcting for the endogeneity of schooling decisions using a control function approach. Our proposal enables us …

In this paper we study how the Huber estimator can be adapted to the presence of endogeneity in a two stage equations … useful alternative to 2SLS and 2SLAD in cases of two-stage estimation to deal with endogeneity when there are concerns for … both robustness and efficiency. …

). Rather than accounting for the endogeneity of schooling through the use of instrumental variables we employ a parametric …. Accounting for endogeneity increases the estimate of the return to education by 5 percentage points, from 7.6% to 12.7%. …

exploit the feature of the transmissionmechanism responsible for its endogeneity. More explicitly, we assume …

The aim of this study is to analyse the efficiency of companies forming collective brands in the experience goods … sector. The central hypothesis is that collective brands have a positive impact on the efficiency of their member companies … itself. The methodology applied to test these hypotheses is based on Data Envelopment Analysis (DEA) to estimate efficiency …

In this work a non parametric approach is used in order to evaluate the relative efficiency of a sample of firms …