“…Relatedly, another important question for future research is how awareness of linguistic varieties in the heritage language may shape bilingual children's friendship formation with in‐group members as well as their ethnic identity development. In a recent study, Arredondo, Rosado, and Satterfield () show that children's proficiency in the heritage language supports ethnic identity formation by bolstering the formation of positive relationships and communication among members of their in‐group, including both children and their parents (see also Oh & Fuligni, ). Furthermore, being proficient in one's heritage language is associated with identifying closely with the ethnicity of one's family (e.g., Argentinian, Mexican, Puerto Rican) rather than using the American pan‐ethnic label to the ethnic group (Fuligni, Kiang, Witkow, & Baldelomar, ; Geerlings et al., ; Oh & Fuligni, ; see also Porter, Rheinschmidt‐Same, & Richeson, ; Rakic, Steffens, & Mummendey, ).…”