We propose a new set of indices to capture the multidimensionality of a country's institutional quality. Our indices are obtained by employing a dimension reduction approach on the institutional variables provided by the Frazer Institute (2018). We estimate the impact that our measures of...

I review a class of models for longitudinal data, showing how it may be applied in a meaningful way for the analysis of data collected by the administration of a series of items finalized to the educational or psychological measurement. In this class of models, the unobserved individual...