Many language proficiency tests include group oral assessments involving peer interaction. In such an assessment, examinees discuss a common topic with others. Human raters score each examinee's spoken performance on specially designed criteria. However, measurement models for analyzing group assessment data usually assume local person…

This paper reported an exploratory study that examined secondary school students' understanding of collaborative discourse in a computer-supported knowledge building environment in characterizing and scaffolding their engagement in productive online discourse. The participants were thirty-eight secondary school students in a visual arts course. A…