Multiracial perspectives on ethnoracial categorization in Alzheimer's disease research

Abstract INTRODUCTION There is a growing proportion of Alzheimer's disease (AD) research participants identifying as two or more races; however, analyses primarily rely on monoracial categories, resulting in exclusion or recategorization of Multiracial participants. METHODS We conducted semi‐structured qualitative interviews with 21 Multiracial adults to explore preferences and perceptions of racial categorization and reclassification in AD research. Recruitment prioritized diverse Multiracial identities, and interviews were evaluated using thematic analysis. RESULTS Participants expressed varied preferences for racial categorization, with many assuming a monoracial standard. Preferences corresponded to both racial identity and assumed racial identification, and depended on available options. Participants responded to reclassification with calls for increased transparency about study methods and intended data usage, and concerns for racial misrepresentation. DISCUSSION Findings underscore the utility of multiple questions and response options for racial categorization, researcher respect of participant experiences and the evolving nature of classification systems, and clear communication about analytic decisions.