Christa S. C. Asterhan

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In this paper we attempt to identify which peer collaboration characteristics may be accountable for conceptual change through interaction. We focus on different socio-cognitive aspects of the peer dialog and relate these with learning gains on the dyadic as well as the individual level. The scientific topic that was used for this study concerns natural(More)
CSCL learning environments provide new contexts for discussions and are thought to provide new opportunities for learning. At the same time, such environments often do not provide guidance on how to act during the discussion. The purpose of this paper is to initiate research on moderation in synchronous discussions in a CSCL environment. The first study(More)
Even though the advantages of online discussions over face-to-face discussion formats has been extensively reported and investigated, the blending of online discussion tools in co-located classroom settings has been considered with far less intensity. In this paper, we report on secondary school students' experiences and preferences concerning two different(More)
Students' actions within a CSCL-environment can be recorded and stored as interaction data. This data can be accessed and analyzed automatically. Teachers, students and researchers may benefit from these analyses. It gives teachers and students immediate feedback about performance indicators and it can help researchers to identify meaningful patterns in the(More)
Preface Intelligent tutoring systems are generally designed to tailor instruction to the individual student, but this does not mean that ITS-guided learning must necessarily be a solitary activity. A variety of recent systems have demonstrated ways in which an adaptive learning environment can incorporate and benefit from the presence of multiple learners.(More)
Decades of research have proven that many misconceptions of scientific notions are difficult to uproot even after intensive instructional interventions. In this paper we examine the role of argumentation and of explanation development in dyadic dialogues and their relation to consequential individual conceptual change. Two quantitative dialogue coding(More)