This article constitutes the first empirical assessment of methodological quality in second language acquisition (SLA). We surveyed a corpus of 174 studies (N = 7,951) within the tradition of research on second-language interaction, one of the longest and most influential traditions of inquiry in SLA. Each report was coded for methodological…

Investigates factors influencing Japanese university students' expository writing in English. Quantitative analysis revealed that students' second-language (L2) proficiency, first-language writing ability, and metaknowledge were significant in explaining L2 writing ability variance. An explanatory model for writing ability in English as a Foreign…