This longitudinal case study from a Complex Dynamic Systems Theory (CDST) perspective touches upon an under-researched issue: L1 development over the lifespan. Levinson (1978) predicts three stages in adulthood: early, mid and late, with a decline in late adulthood. We examine Diane Larsen-Freeman's publications over a period of 50 years (from age…

This study aims to identify the interactive metadiscourse markers in the main sections of the articles (introduction, method, findings, results, discussion and conclusion) in the fields of science and social sciences. Designed as a descriptive research, this study employs the survey model. The articles analyzed in this study are a total of 16…

Despite previous research suggesting that first language (L1) use fulfills important functions in collaborative writing (CW) tasks, research has yet to examine whether L1 or second language (L2) use may lead to variation in the lexico-grammatical aspects of learners' collaborative texts and the pair talk. Using a corpus-based approach, this study…