Immigration is a crucial issue in contemporary politics, and attitudes towards immigration are highly dispersed in many countries. We treat individuals' immigration friendliness (IF) as a feature of their self-image or identity and hypothesize that, similar to other pro-social self-images,...

This research advances the hypothesis and establishes empirically that interpersonal population diversity has contributed significantly to the emergence, prevalence, recurrence, and severity of intrasocietal conflicts. Exploiting an exogenous source of variations in population diversity across...