Multilevel IRT analysis of the Everyday Discrimination Scale and the Racial/Ethnic Discrimination Index.

Unfair treatment based on race is an unfortunate reality. While there is increasing interest in mapping the daily and longer-term impact of discrimination in psychology, studies that examine the psychometric properties of indicators spanning these timeframes are limited. Item response analysis examined the measurement characteristics of two daily measures of ethnic/racial discrimination: (a) the six-item Racial/Ethnic Discrimination Index (REDI), and (b) the modified five-item Everyday Discrimination Scale (EDS; Williams et al., Journal of Health Psychology, 1997, 2, 335). This study investigated whether the two scales can be appropriately adapted to access adolescents' daily-level ethnic/racial discrimination experiences. Both measures were administered for 14 consecutive days in a sample of 350 adolescents attending public schools in a large, urban area. Results suggest that the REDI has high loading and high difficulty. All REDI items functioned similarly at daily and person levels, suggesting that any single REDI item measured on a single day is sufficient for measuring daily ethnic/racial discrimination experiences. The EDS also shows high loading and high difficulty. However, EDS items functioned differently at the daily and person levels. REDI items were invariant across gender and race/ethnicity (African Americans, Asians, and Latinx). Recommendations for measuring daily ethnic/racial discrimination are discussed. (PsycInfo Database Record (c) 2021 APA, all rights reserved).