“…In a study of 805 Singaporean bilingual preschoolers, Sun et al (2021) discovered that the number of months children had been speaking both of their languages was significantly and positively related to their prosocial skills, even after controlling for multiple covariates such as socioeconomic status and gender. Similar evidence has been found for immigrant children, whose use of the societal dominant language is associated with positive relationships with peers (Chen and Tse, 2010) and teachers (Ren and Wyver, 2016). Beyond the use of societal dominant languages, children's heritage languages are critical for their social-emotional development.…”