By: Frank A. Cowell (STICERD – London School of Economics)
Emmanuel Flachaire (GREQAM – Groupement de Recherche en Économie Quantitative d’Aix-Marseille – Université de la Méditerranée – Aix-Marseille II – Université Paul Cézanne – Aix-Marseille III – Ecole des Hautes Etudes en Sciences Sociales (EHESS) – CNRS : UMR6579)
Our new approach to mobility measurement involves separating out the valuation of positions in terms of individual status (using income, social rank, or other criteria) from the issue of movement between positions. The quantification of movement is addressed using a general concept of distance between positions and a parsimonious set of axioms that characterise the distance concept and yield a class of aggregative indices. This class of indices induces a superclass of mobility measures over the different status concepts consistent with the same underlying data. We investigate the statistical inference of mobility indices using two well-known status concepts, related to income mobility and rank mobility.
Keywords: Mobility measures; axiomatic approach; inference