  We introduce the social welfare implications of the Zenga index, a recently
proposed index of inequality. Our proposal is derived by following the seminal
book by Son (2011) and the recent working paper by Kakwani and Son (2019). We
compare the Zenga based approach with the classical one, based on the Lorenz
curve and the Gini coefficient, as well as the Bonferroni index. We show that
the social welfare specification based on the Zenga uniformity curve presents
some peculiarities that distinguish it from the other considered indexes. The
social welfare specification presented here provides a deeper understanding of
how the Zenga index evaluates the inequality in a distribution.
