Discusses the three main approaches to defining language knowledge and use: (1) the structural approach, (2) the functional approach, and (3) the general proficiency approach. Asserts that each approach has specific consequences for language testing and that no one approach can claim to be the only way of representing that knowledge. (Author/SED)

Reviews research findings on second-language (L2) interaction from the perspective of syntactic development. The article argues that better understanding of the role of negotiated interaction in L2 syntactic development requires examining the specific grammatical structures in interaction guided by the criteria of relevance, availability,…