I am an assistant professor of Political Science at Stanford University. My main research focus is group identity and ingroup-outgroup relations. I study the conditions under which outgroup members are accepted as part of the ingroup and the determinants of ingroup views towards outgroups. Major applications of my research include immigrant assimilation, the determinants of native prejudice against immigrants, the long-run effects of intergroup conflict and the interaction between ethnicity and race. I do primarily empirical work in various historical and geographic contexts, with a main focus on early 20th century US and contemporary Western Europe. I received my PhD in Economics from Pompeu Fabra University in 2015.