Country-of-birth data contained in registers are often aggregated to create broad ancestry group categories. Along with my coauthors, Sarah Valdez and Juta Kawalerowicz, I examine how measures of residential segregation vary according to levels of aggregation. We use Swedish register data to calculate pairwise dissimilarity indices from 1990 to 2012 for ancestry groups defined at four nested levels of aggregation. This study demonstrates that the practice of aggregating country-of-birth statistics in register data can hinder the ability to identify highly segregated groups and therefore design effective policy to remedy both inter-group and intergenerational inequalities. [Article]
sociological research on segregation and mobility
Benjamin Fletcher Jarvis 