The disadvantages facing women and girls are a major source of inequality. All too often, women and girls are discriminated against in health, education and the labour market—with negative repercussions for their freedoms. We introduce a new measure of these inequalities built on the same framework as the HDI and the IHDI— to better expose differences in the distribution of achievements between women and men (figure 5.4 of the Report). The Gender Inequality Index shows that: