An historical overview of research on second language acquisition considers research topics examined in observational/longitudinal studies and experimental studies. The questions that have reappeared across both observational and experimental studies concern: (1) whether second language learning is the same or different from first language…

Current research on adult second language learning suggests that study is necessary to separate interference variables from intralinguistic variables and to determine the relative difficulty of structures in each group. This research on the acquisition of the English relative clause was specifically designed to test the transfer hypothesis…

The article criticizes present-day overemphasis of contrastive analysis procedures in second language instruction. Recommendations are for language teachers to reappraise their classroom objectives and to give paramount importance to mastery of language use rather than mastery of language structure. Pedagogical procedures based on situational…

Fifteen articles review code-switching in the four major areas: policy implications in specific institutional and community settings; perspectives of social theory of code-switching as a form of speech behavior in particular social contexts; the grammatical analysis of code-switching, including factors that constrain switching even within a…

The language learner is activated by exposure to primary linguistic data in the target language, categorizes that data and deduces from it a system of rules or hypotheses. When the language acquisition process is successful, as is virtually always the case in first language acquisition, the learner's rule system corresponds to that of the speech…