The Cognition Hypothesis postulates that more cognitively complex tasks can trigger more accurate and complex language production, thereby advancing second language (L2) development. However, few studies have directly examined the relationship between task manipulations and L2 development. To address this gap, this article reviews, via an analytic…

This study examined how key factors of FFI (degree of explicitness, L1 similarity, proficiency level, and grammar type) influence the accuracy of production. A total of 22 experimental studies, all of which had Korean participants and productive assessments of speech or writing, were selected for analysis. Results revealed that explicit grammar…

Because English grammar consists of a long list of features, it is impractical to include all of them in a single grammar test. It would be useful to identify among all those features the best indicators of students' grammatical knowledge and ability so that we could focus on what were the most representative knowledge and skills and simplify…