Rack, Oliver
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Oliver
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Rack, Oliver
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- PublikationPredicting engagement in computer-supported collaborative learning groups using natural language processing(20.03.2024) Jeitziner, Loris Tizian; Paneth, Lisa; Rack, Oliver; Zahn, Carmen; Wulff, DirkCollaborative group engagement is a key factor of success in learning groups. This work explores the development of an innovative natural language processing method for predicting collaborative group engagement. To this end, we identified linguistic markers based on an established observation-based scheme for rating collaborative group engagement, such as, semantic similarity to task instructions, verbal mimicry, sentiment, and use of jargon. We evaluated the predictive power of the linguistic markers on the data of an observational study in which 38 learning groups were instructed to perform a collaborative learning task. Overall, the data consisted of 2588 expert ratings on collaborative group engagement. We relied on machine learning to the predict collaborative group engagement ratings using informative subsets of linguistic markers. The results showed above-baseline predictive accuracy for all four dimensions of collaborative group engagement. Moreover, the analysis of feature importance points to quantity of utterances, responsiveness and uniformity of participation as the most important markers for collaborative group engagement. By harnessing natural language processing, this work extends traditional qualitative analysis and delivers nuanced quantitative metrics suitable for capturing the complexity and dynamics of contemporary Computer Supported Collaborative Learning (CSCL) environments. Thereby, it contributes to the evolving landscape of CSCL research and demonstrates the potential of novel analytic techniques to support and enrich qualitative analysis in multiple domains.06 - Präsentation
- PublikationExploring nonverbal behavior and collaborative group engagement in online learning groups(22.07.2022) Rack, Oliver; Paneth, Lisa; Jeitziner, Loris Tizian; Zahn, CarmenIn an explorative field study, we investigated nonverbal behavior and collaborative group engagement (QCGE) in online learning groups. Participants in small groups performed a hidden profile task. Results suggests differences within and between groups in their nonverbal behavior. We expect that nonverbal behaviors relate to QCGE in online learning groups.06 - Präsentation
- PublikationPotenziale kollaborativer Medien: Eine empirische Untersuchung am Beispiel interaktiver Tische(2016) Mateescu, Magdalena; Zahn, Carmen; Klinkhammer, Daniel; Rack, Oliver; Reiterer, Harald; Weiße, Nora [in: 50. Kongress der Deutschen Gesellschaft für Psychologie (DGPs)]04B - Beitrag Konferenzschrift
- PublikationPraxistool KNOWLEDGE-Screen: eine Diagnosemethode für erfolgsrelevantes Wissen(Haupt, 2015) Ellwart, Thomas; Rutz, Milena; Rack, Oliver; Zölch, Martina; Mücke, Anja [in: Fit für den demografischen Wandel?]04A - Beitrag Sammelband
- PublikationResilient team processes in high-risk environments - Analyzing team work behaviors in critical situations in a nuclear power plant(28.02.2013) Tschaut, Anna; Kleindienst, Cornelia; Ritz, Frank; Rack, Oliver; Brüngger, Jonas06 - Präsentation
- PublikationEffekte gruppenbasierter Anreize auf die Koordination in Gruppen. Ein Vergleich von computergestützter und face-to-face Gruppenarbeit(08.12.2011) Rack, Oliver; Kolbe, Michaela; Boos, Margarete06 - Präsentation
- PublikationEffekte von Statusunterschieden und gruppenbasierten Anreizen auf den Wissensaustausch in computergestützten Gruppen(08.12.2011) Rack, Oliver; Hollingshead, Andrea B.; Boos, Margarete06 - Präsentation
- PublikationMeasurement of Shared Mental Models in the Field - Methodological Advantages and Limitations(08.12.2011) Ellwart, Thomas; Rack, Oliver; Biemann, Torsten05 - Forschungs- oder Arbeitsbericht
- PublikationKnowledge transfer between generations: Effects of age diversity, individual and team work characteristics(08.12.2011) Ellwart, Thomas; Mock, Kristin; Rack, Oliver05 - Forschungs- oder Arbeitsbericht
- PublikationEffects of group incentives and status differences on knowledge sharing in computer-mediated groups(08.12.2011) Rack, Oliver; Hollingshead, Andrea B.; Boos, Margarete05 - Forschungs- oder Arbeitsbericht