This paper proposes instrumental variable estimators for multiple linear regression models with errors in the explanatory variables, that require no extraneous information. As is very well known, the ordinary least squares estimator (OLS), which is based on the sample moments of order two, is...

This paper presents, for models based on time series data, a method of estimation to take into account errors in the variables, when these errors are not autocorrelated. The suggested approach utilizes shifted values of the independent variables as instruments. We use Fuller's (1987) consistent...

Certain serious diseases, including several major genetic disorders, cannot be treated effectively unless they are detected before symptoms appear. In such cases, only systematic population screening can ensure that the necessary preventive treatment can be administered to affected individuals....

The suggested statistical model make it possible to analyze simultaneously the effect of the student's characteristics, when entering the program, on his perseverance as well as on his performance, as measured by his avarage grade. The model takes into account the fact that no such grade is...

Economists have long been interested in different aspects of education such as, the measure of its output, the analysis of the determinants of scholarly achievement or the pedagogical approach. This study stands within the same lines of preoccupations. Indeed, it tries to find out whether some...

Thoughts inspired by a fable written by Georges Duhamel entitled "Les Confitures", on the difficulties encountered by economists responsible for performing cost benefit analyses as well as on their role in society. Réflexions à partir d’une fable de Georges Duhamel intitulée « Les...