Changing Ingroup Boundaries: The Effect of Immigration on Race Relations in the US

Working Paper: CEPR ID: DP14590

Authors: Vasiliki Fouka; Marco Tabellini

Abstract: How do social group boundaries evolve? Does the appearance of a new outgroup change the ingroup’s perceptions of other outgroups? We introduce a conceptual framework of context-dependent categorization, in which exposure to one minority leads to recategorization of other minorities as in- or outgroups depending on perceived distances across groups. We test this framework by studying how Mexican immigration to the US affected White Americans' attitudes and behaviors towards Black Americans. We combine survey and crime data with a difference-in-differences design and an instrumental variables strategy. Consistent with the theory, Mexican immigration improves Whites’ racial attitudes, increases support for pro-Black government policies and lowers anti-Black hate crimes, while simultaneously increasing prejudice against Hispanics. Results generalize beyond Hispanics and Blacks and a survey experiment provides direct evidence for recategorization. Our findings imply that changes in the size of one group can affect the entire web of inter-group relations in diverse societies.

Keywords: immigration; race; ingroup-outgroup relations

JEL Codes: J15; J61; Z13


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
Mexican immigration (K37)improved racial attitudes among white Americans (J15)
Mexican immigration (K37)reduction in anti-black prejudice (J79)
increase in share of Mexican immigrants (K37)increase in positive feelings towards blacks (J15)
Mexican immigration (K37)increase in support for pro-black government policies (H53)
Mexican immigration (K37)decrease in anti-black hate crimes (J15)
increase in size of Mexican immigrants (K37)more favorable perceptions of black Americans (J15)
presence of new outgroup (B50)alteration of classification and attitudes towards existing outgroups (C92)

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