Bilingual Vocabulary Development in Mexican Indigenous Infants: The Effects of Language Exposure from Home and Mothers' Language Dominance.

This study evaluates how language exposure and mothers' language dominance relate to infants' early bilingual vocabulary development in a low-socioeconomic status (SES) sample from an understudied population: Mexican Indigenous bilinguals. Thirty-two mother-child dyads participated. All mothers were bilingual speakers of Spanish and one of Mexican Indigenous languages, including Zapotec, Mixtec, and Otomi.