A large body of recent quantitative work on the 'diversity detriment' hypothesis finds that ethno-religious diversity is linked with a host of societal ills, implying in turn a strong challenge to multiculturalist theory and policies. Given the stakes, the appropriate conceptualization and...

Inequality and social exclusion receive considerable contemporary policy attention. In the field of international development, inequality - both vertical (between individuals and households) and horizontal (between groups) - is a core concern in the 2030 Agenda for Sustainable Development....

A considerable body of research suggests that horizontal inequality between ethnic groups has major socioeconomic implications, in particular for peace and economic development. Much of this work focuses on horizontal inequality as an independent causal variable, rather than an outcome of...

The relationship between social mobility and inequality is well studied in the literature, but far greater attention has been paid to 'vertical' than to 'horizontal' inequality. This paper focuses on mobility and horizontal inequality between ethnic, racial, and culturally-defined groups. Not...

A growing body of research shows that COVID-19 both reflects and exacerbates existing inequalities. However, there are significant gaps in this research area with respect to 'horizontal' or group-based inequalities in Global South countries. Lack of group-disaggregated data often contributes. In...

Despite the good intentions behind affirmative action (AA) policies to mediate 'horizontal inequalities' between ethnic groups, the evidence on their effectiveness remains open to debate. In this study, we conduct a systematic review of the literature with global scope, to add new clarity on...