Research on the acquisition of Mayan languages has shown child-directed communication (CDC) to be low in frequency. Nevertheless, long-term linguistic-anthropological research with the Tsotsil Mayan in Southern Mexico has documented episodes in family life when children engage in interactional routines or interactional formats (IFs) with their…

Complex systems of inflectional morphology provide a useful testing ground for input-based language acquisition theories. Two analyses were performed on a high-density (12%) naturalistic sample of two Polish-English children's (2;0 and 3;11) and their parents' use of Polish noun inflection: first, each child's use of inflectional affixes and their…

Previous research suggests that increased second language (L2) input at home may not support L2 acquisition in children from migrant backgrounds. In drawing this conclusion, existing work has largely aggregated across family members. This study contrasts the effect of L2 input from older siblings with that from mothers. Participants were 113 child…

Lexical development of bilingual children is influenced by a number of input factors. In the present study, early lexical skills of 25-month old children growing up with Turkish and German were assessed. Parents of 92 children filled out a newly developed list for productive Turkish vocabulary, as well as a vocabulary list for German. A parental…

This study investigated the role of language exposure in vocabulary acquisition in Irish, a threatened minority language in Ireland which is usually acquired with English in a bilingual context. Using a bilingual Irish-English adaptation of the MacArthur-Bates Communicative Development Inventories) [Fenson, L., V. A. Marchman, D. J. Thal, P. S.…

This article reports on a survey with 170 school-age children growing up with two or more languages in the Canadian province of Ontario where English is the majority language, French is a minority language, and numerous other minority languages may be spoken by immigrant or Indigenous residents. Within this context the study focuses on minority…