In the presence of outliers in a dataset, a least squares estimation may not be the most adequate choice to get representative results. Indeed estimations could have been excessively infuenced even by a very limited number of atypical observations. In this article, we propose a new Hausman-type...

In the robust statistics literature, a wide variety of models have been devel- oped to cope with outliers in a rather large number of scenarios. Nevertheless, a recurrent problem for the empirical implementation of these estimators is that optimization algorithms generally do not perform well...

In this paper, we follow the same logic as in Hausman (1978) to create a testing procedure that checks for the presence of outliers by comparing a regression estimator that is robust to outliers (S-estimator), with another that is more e¢ cient but a¤ected by them. Some simulations are...

We explore the implications of an increase in clean technology spillovers between developedand developing countries. We build a 2-stage 2-country game of abatements in whichplayers are linked with technology spillovers. We show that, within a non-cooperative framework,the response of clean...

In a model of horizontal matching on the labor market, we show that increasing the bargainingpower of workers may increase the incentive of some employers to switch to newproduction activities. In particular, this could lead to (i) higher wages, (ii) more jobs, (iii)better jobs and (iv) higher...

We study a political system in which voters can optimally pick between political platforms,but cannot screen the quality of individual politicians associated with these platforms.A bad individual achievement can correspond to either incompetence (adverse selection) orcorruption (moral hazard)....

I show how a market where all sellers share the same information can display price dispersion: identical goods sold at different prices by different sellers. This happens when goods are sold on premises of the same quality, but corresponding to different tastes. In the presence of such price...