Marcela Nogueira Ferrario

The objective of this paper is analyzing family size influence on both total familiar income and per capita familiar income from 1992 to 2006 using National Domiciliary Sample Research (PNAD) data, led by Geography and Statistical Brazilian Institute (IBGE). To reach such objective, two statistical methodologies have been used. The
first one has esteemed indexes which measure income inequality, Gini and Theil, and the Theil decomposition index, for family size. The second one has calculated two sets of quantile regressions so that it was possible measuring the family size effect on income. The first regression set had the total familiar income logarithms as dependent variable and the second the per capita familiar income. Results have shown that family size reduction has contributed for making income distribution better, but not in a relevant way.