Children all over the world learn language, yet the contexts in which they do so vary substantially. This variation needs to be systematically quantified to build robust and generalizable theories of language acquisition. We compared communicative interactions between parents and their 2-year-old children (N = 99 families) during mealtime across…

Siblings play crucial roles in each other's cognitive and language development because they observe, imitate, and receive guidance and support from each other during their interactions. In this research, we examined trilingual siblings (ages 6 and 9) from an immigrant family with a rarely explored cultural background (American-born children of…