Moreover, the main distinction of the SIGI is that it focuses on rights, as well as on social institutions that often are not codified in laws, but are based on norms and values, as well as attitudes and practices, that shape women's opportunities and decisions (Branisa et al., In addition, the SIGI is a more comprehensive measure considering other dimensions of gender inequality in social institutions. It is a composite index which scores non-OECD countries on the basis of 14 variables (Table l).4 The scale of the SIGI goes from 0, meaning low discrimination to 1, high level of discriminatory social institutions. However, it may still be a good measure of gender norms governing male behaviour and opportunities.