Identifies two versions of the question of whether there is a single initial system in the syntax of developing bilinguals. (Author/VWL)

Suggests that in acquiring two languages from birth, bilingual children separate their grammars from very early on. Focuses on the acquisition of syntax in a generative framework. Argues that cross-linguistic influence can occur if an interface level between two modules of grammar is involved, and the two languages overlap at the surface level…

Suggests that a narrow kind of bilingualism exists within every language and is present whenever two properties exist in a language that are not statable within a single grammar. This theoretical bilingualism is defined in terms of the minimalist theory of syntax presented by Chomsky (1995). (Author/VWL)

Seven peer commentaries are included in response to an article on the notion that a narrow kind of bilingualism exists within every language and is present whenever two properties exist in a language that are not statable within a single grammar. This theoretical bilingualism is defined in terms of the minimalist theory of syntax presented by…

Responds to peer comments on an article the author wrote on theoretical bilingualism--a narrow kind of bilingualism exists within every language and is present whenever two properties exist in a language that are not statable within a single grammar. (Author/VWL)

Focuses on unusual developmental structures during the simultaneous acquisition of German and English in early childhood, which were evident parallel to a majority of target structures. Explains the cognitive motivation for unusual acquisition structures as well as the eventual retraction from them. (Author/VWL)

Reports the findings of a case study of bilingual first language acquisition in Catalan and English. Presents a general overview of a child's syntactic development from the age of 1 year 3 months to 4 years and 2 months. Focuses on the question of subject realization in the two contrasting languages the child is acquiring simultaneously. Data…

Addresses the question of whether young children's code-mixing obeys the same structural constraints as bilingual adults code mixing. Examines data from bilingual French-English bilingual children filmed in conversation with both parents at 6-month intervals from age 2 to age 3 years, 6 months. Children's code-mixed utterances were examined for…

Presents evidence of language transfer from Cantonese to English in three areas where the two languages contrast typologically: wh-in-situ interrogatives, null objects, and prenominal relatives are observed at a period when Cantonese is dominant as measured by MLUw. Comparisons with monolingual development show both qualitative and quantitative…

Compares the results from monolingual children with object omissions in bilingual children who have acquired two languages simultaneously. Claims that the difference between monolingual and bilingual children is due to crosslinguistic influences in bilingual children. (Author/VWL)

Comments are provided by ten authors in response to an article on language separation and crosslinguistic influence in bilingual first language acquisition. (Author/VWL)

Responds to comments by various researchers on an early article presented in the same issue of this journal, claiming that language separation and crosslinguistic influence coexist in bilingual first language acquisition. (Author/VWL)