The present study validates a brief version of the Multiracial Youth Socialization Scale, the MY-Soc-B, which assesses Multiracial youths' experiences of receiving messages from their caregivers about race and culture. Using a sample of 318 diverse Multiracial American adolescents (M_age = 16.01; SD = 1.30), the original 62 items were reduced to 24 items via an examination of confirmatory factor analyses and conceptual clarity and fit of item content. The model fit strongly supported retaining the eight-factor structure from the original full version. Validity and reliability of the eight subscales (i.e., navigating multiple heritages, Multiracial identity socialization, preparation for monoracism, negative socialization, race-conscious socialization, diversity appreciation socialization, colorblind socialization, and silent socialization) were largely supported, with 20/24 correlations between the MY-Soc-B subscales and racial-ethnic identity resolution, affirmation, and exploration replicating associations found with the original 62-item MY-Soc Scale.