This special issue revisits a classic topic in linguistic theory, A-bar movement, applied to developing and bilingual grammars. We claim that A-bar movement, or filler-gap dependencies, is still the quintessential linguistic phenomenon to illustrate the interaction between the biological endowment, the experience with language (past and present),…

Norwegian allows filler-gap dependencies into embedded questions, which are islands for filler-gap dependency formation in English. We ask whether there is evidence that Norwegian learners of English transfer the functional structure that permits island violations from their first language (L1) to their second language (L2). In two acceptability…

Examines the possible and specific relationships between first language (L1) acquisition and second language (L2) acquisition to show that a number of assumptions warrant closer inspection. Explores problems in distinguishing L1 from L2 acquisition from three different perspectives: individual language learner histories, the data, and the…

Ways in which studies in second-language acquisition research can illuminate first-language acquisition research are explored. Emphasis is on issues of learner strategies, individual variation, acquisition of late learned structures, bilingualism, Universal Grammar, and the fate of obsolete knowledge in acquisition. (64 references) (Author/LB)

Examines evidence offered to support the idea of a sensitive period for second language acquisition. Findings indicate that there is insufficient evidence to accept the claim that mastery of a second language is determined wholly, or even primarily, by maturational factors. (34 references) (Author/CK)