Enrico, Rettore; Ugo, Trivellato; Alberto, Martini - In: Politica economica - Journal of Economic Policy (PEJEP) (2003) 3, pp. 301-342
Most times the effects of social interventions targeted to specific subgroups of the population are "a priori" uncertain. This is why measuring them "ex post" is of major value to learn which interventions work, on which target groups, in which macroeconomic conditions. The exponential growth of...