Journal of Race, Ethnicity and Politics
The Dimensions of Ethnicity: Understanding the Cognitive Architecture of Ethnic Group Membership
2026-04-23
What makes someone belong to an ethnic group? This article examines how individuals organize and prioritize ethnic attributes frequently used to denote membership and asks when simplified measurement strategies provide a reasonable approximation of ethnic identity in practice. Using original survey data from two online experiments fielded in 2024, I analyze respondents’ evaluations of eight common identity attributes among White, Black, and Latino Americans. Drawing on principal components analysis, multidimensional preference scaling, and circular-linear regression, I show that while some identities are well approximated by a single dominant dimension, others exhibit weaker alignment and greater heterogeneity in how attributes are prioritized. These differences have direct implications for measurement: reliance on any single attribute can meaningfully capture some identities while systematically misrepresenting others. More broadly, the findings underscore the need for group-sensitive measurement strategies when studying ethnic identity and its political and social consequences.