Strengths and weaknesses of three approaches to the study of the input requirements of second language learners are described. The data-oriented, the language-model, and the processing-model approaches are then compared with respect to their claims concerning the metalinguistic needs of the learner. (Author/CB)

Examines trends in second language (L2) communication strategy (CS) research. A comprehensive review is included of the relevant literature from the last two decades, with particular reference to the different ways in which CSs have been defined and to the corresponding influences on the organization of strategy taxonomies. (92 references)…

Reviews research on the nature of attention and memory and proposes a model of the relationship between them during second-language acquisition complementary to Schmidt's noticing hypothesis and oppositional to Krashen's dual-system hypothesis. The article maintains that differential performance on implicit and explicit learning and memory…