The document discusses a proposed study exploring the role of collaborative meta-talk in developing argument skills. It summarizes previous research showing that practice in dialogic argumentation helps adolescents develop argument skills and recognition of strategies over time. The study would analyze discussion transcripts from student pairs to examine how meta-talk functions and whether its role is to provide a bi-directional zone of proximal development. It hypothesizes that student pairs who work together over multiple sessions (Stay condition) will engage in more meta-talk focused on jointly regulating their argumentation compared to pairs who change partners each session (Switch condition).