Die fachspezifische Förderung digitaler Informationskompetenzen im Geographieunterricht - Grundlagen, Strategien und didaktische Unterstützung für Internetrecherchen zu geographischen Fragestellungen und darauf basierenden Argumentationen

Diese kumulative Dissertation besteht im Kern aus drei Teilstudien, in denen Erkenntnisse über die Kompetenzen von Lernenden bei der Erschließung und argumentativen Beantwortung geographischer Fragestellungen mit Hilfe von Internetrecherchen gewonnen werden. Basierend auf diesen Erkenntnissen wird ein didaktisches Unterstützungsinstrument zur Förderung diesbezüglicher Fähigkeiten entwickelt und auf seine Wirksamkeit überprüft. In Teilstudie 1 wird empirisch untersucht, über welche Kompetenzen Schüler*innen bei Internetrecherchen zu geographischen Fragestellungen verfügen, welchen Schwierigkeiten sie sich dabei gegenübersehen und welche Strategien sie anwenden. In Teilstudie 2 wird analysiert, inwiefern die Schüler*innen in der Lage sind, die gefundenen Informationen weiterzuverarbeiten und eine recherchierte Fragestellung argumentativ zu beantworten. Die Ergebnisse zeigen, dass die Schüler*innen bereits über grundlegende Fähigkeiten verfügen, relevante Informationen zu der gesuchten Fragestellung im Internet zu finden und ihre eigene Position zu einem Konflikt zu argumentieren. Schwächen zeigen sich bei der Internetrecherche unter anderem im Bereich der kritischen Evaluation der gefundenen Informationen und bei der Entnahme von raumbezogenen Informationen in Karten. Beim Verfassen der Argumentationen weisen die Schüler*innen insbesondere bei den Spezifika geographischer Argumentationen Defizite auf. Strukturierte Notizen nach Pro- und Kontraargumenten zeigen einen positiven Effekt, sowohl auf die Internetrecherche als auch auf die Argumentation. Basierend auf den in Teilstudie 1 und 2 gewonnenen Erkenntnissen wird ein didaktisches Unterstützungsinstrument in Form einer digitalen Lerneinheit entwickelt, dessen Wirksamkeit in Teilstudie 3 untersucht wird. Dabei kann festgestellt werden, dass die Teilnehmer*innen sich tiefer mit den recherchieren Informationen auseinandersetzten als die Vergleichsgruppe und die Qualität ihrer anschließenden Argumentation signifikant höher war. Die digitale Lerneinheit kann somit als Unterstützungsinstrument zur Förderung von Kompetenzen für Internetrecherchen zu geographischen Fragestellungen und anschließender Argumentation betrachtet werden

Improving the Quality of E-Learning by Enhancing Self-Regulated Learning. A Synthesis of Research on Self-Regulated Learning and an Implementation of a Scaffolding Concept.

Until this day, e-learning scenarios have not been able to meet the great expectations that have been put on them. From a psychological point of view, one of the reasons for previously disappointing results is the high degree of freedom that e-learning scenarios confront individuals with. The concept of self-regulated learning (SRL) provides a framework for improving the quality of learning in environments of high self-determination. Following the assumption that the deployment of SRL processes during learning is an indicator for a learning process of high quality, which in turn entails a learning outcome of high quality, scientists have created a variety of SRL interventions. In line with this research, the main goal of this dissertation was to improve the quality of e-learning, applying learning on the World Wide Web (WWW) as a specific scenario, by enhancing individuals’ deployment of SRL processes. As a first study, synthesizing past SRL research, a meta-analysis was conducted to evaluate the relevance of SRL for the quality of learning, and to quantify the impact of SRL interventions on academic achievement. Another aim was to provide guidance for future SRL research by identifying features of SRL interventions that have proven to be effective as well as features that have lacked effectiveness and escaped attention in the past. Putting special effort into identifying unpublished dissertations in order to avoid a publication bias, a pool of 39 studies that reported 44 independent treatments was established. Applying a random effects model, a weighted mean effect of SRL interventions on academic performance of ΔˉGlass = .45 was determined. One-way moderator analyses identified peer-review status, research design, instance of delivery, and age of participants as influential variables. In further analyses, when combining heterogeneous categories of moderators to establish homogeneous subgroups, it was found that treatments focusing on the metacognitive and cognitive layers, strategy instructions, and interventions within a mathematical domain were most effective for young learners between the ages of 9 and 14. With regard to computer-based interventions, nonsignificant effects on performance were revealed. Aiming to improve the quality of e-learning, the author simultaneously developed a concept for providing SRL support. Following an indirect approach of assistance, the core of the concept was to optimize the learning environment by providing learners with scaffolds that served as tools that could be used to complete a learning task and that simultaneously induced the deployment of six metacognitive processes in the three cyclical phases of learning. Aiming to provide learners with more intensive guidance, an extended concept also included administering additional prompts. The sketched scaffolding concept was realized by implementing the Firefox extension E-Learning knoWledge Management System (ELWMS). The second study of this dissertation served to evaluate whether working with ELWMS enhanced the quality of the learning process and the learning outcome. Randomly assigned to four conditions, N = 64 participants learned on Wikipedia about Classical Antiquity for 45 min. The two experimental groups were equipped with the standard version of ELWMS, and were either free to apply the scaffolds of their own accord or received two additional prompts, whereas the two control groups worked with the standard version of Firefox. The quality of the learning process was evaluated by a self-developed context-specific SRL self-report questionnaire. In addition, participants’ overt actions were assessed by generating log data and by conducting qualitative analyses of screen recordings. The quality of the learning outcome was evaluated by a self-developed achievement test, applied as a pretest and a posttest, and by determining the quality of the created structure. Results revealed positive effects of the scaffolding concept on the quality of the learning process, and ambiguous effects of additional prompting. The third study of this dissertation served to provide further insight into the effectiveness of the sketched scaffolding concept with an elaborated study design. Equipped with the second generation of ELWMS, learners of experimental groups were either free to apply the scaffolds of their own accord or received additional intensive prompting of six processes that were considered to enhance achievement. To be able to generate comparable log data for all conditions, the control group worked with a downgraded version of ELWMS that did not provide metacognitive support. Before learning on Wikipedia about Classical Antiquity for 45 min, all N = 108 participants had to complete a web-based training on ELWMS. The quality of the learning process was evaluated by applying a revised context-specific SRL self-report questionnaire that was synchronized with an advanced and optimized method of collecting log data. In further qualitative analyses, logged overt actions were assigned a rating of relevance. The quality of the learning outcome was evaluated by a revised achievement test, applied as a pretest and a posttest, and by determining the quality of the created structure. In line with the second study, results revealed positive effects of the scaffolding concept on the quality of the learning process. This effect was enhanced by additional intensive prompting. In whole, this dissertation presents evidence that enhancing SRL improves the quality of learning and provides a path for creating effective SRL interventions. By applying a complex multimethod approach, it further proposes a promising concept for inducing SRL processes in e-learning