Maria Giovanna Monti

Stratification And Between‐Group Inequality: A New Interpretation

Traditionally, the literature has seen stratification as linked closely to within‐group inequality. More recently, some papers have focused on measuring the impact of stratification on between‐group inequality. In this paper, we show that when two groups are involved, such an impact can be measured by a simple comparison of the two cumulative distribution functions. This approach allows an interpretation of stratification in terms of probabilities and paves the way for a neat and simple graphical illustration. We apply it to the analysis of between‐continent inequality.

A Note on the Dagum Decomposition of the Gini Inequality Index

In this paper we reconsider the Dagum decomposition of the Gini index and we compare this decomposition with the decompositions proposed by Mookherjee and Shorrocks and by Lambert and Aronson. In so doing, a deeper insight into the meaning of the overlapping term is given and an alternative expression for this term is obtained. The results are applied to a sub-sample of the Polish CSO survey: the families taken into consideration are selected and grouped according to the number of their components. The aim is to analyze how the present Polish personal income tax modifies the overall income distribution and to evaluate the changes in the within and between groups income inequalities

Stratification and Between-Group Inequality: A New Approach to Measurement

Traditionally, the literature has seen stratification as linked closely to within-group inequality. More recently, some papers have focused on measuring the impact of stratification on betweengroup inequality. In this paper, we show that when two groups are involved, such an impact can be measured by a simple comparison of the two cumulative distribution functions. This approach allows an interpretation of stratification in terms of probabilities and paves the way for a neat and simple graphical illustration. We apply it to the analysis of between-continent inequality.

A Note on Between-Groups Inequality with an Application to Genders

Existing methods of between-groups income inequality measurement are rather uninformative if applied to genders since they are not sensitive to discrimination. We introduce a Gini-based measure of between-genders inequality which explicitly depends upon discrimination and we apply it to measure the impact of a gender-based tax reform in Italy.