Automated Written Corrective Feedback 16-18: Chongwon Park's Qualitative Inquiry Series 95

Automated Written Corrective Feedback 16: Agreement as a Core Predictor of L2 Writing Development: A Multi-Method Classroom StudyBackground:Second language writing development is influenced by grammatical competence, revision processes, and individual learner trajectories. However, few studies have integrated improvement analysis, grammatical predictors, and developmental profiling within a single dataset.Purpose:This study examined writing development in a university-level practical English writing course by investigating (a) score improvement across drafts, (b) grammatical predictors of final writing quality, (c) learner developmental clusters, and (d) tiered instructional priorities.Method:Participants were 32 undergraduate EFL students enrolled in a semester-long writing course. Data included pre- and post-draft writing scores and five grammar quiz components: sentence types, agreement, main verbs, parallelism, and articles. Analyses included paired-samples t-tests, multiple regression, and cluster analysis.