is the senior instructional designer and coordinator of digital learning and simulation at the Schulich School of Medicine & Dentistry at the University of Western Ontario. His research focuses is on educational technology and the impact on the learner and performance. He has taught graduated level courses in the field of Educational Technology focusing on 21st century teaching and learning (Email: Jay.Loftus@schulich.uwo.ca). Michele Jacobsen PhD is associate dean of graduate programs in education and a professor in the Learning Sciences in the Werklund School of Education. Her research and teaching focuses on technology-enabled learning and teaching in K-12 classrooms, schools, school jurisdictions and post-secondary contexts using case study, inquiry and designbased approaches to research (Email: dmjacobs@ucalgary.ca). Timothy D. Wilson PhD is an associate professor in
AbstractUnderstanding the relationship between cognitive processing and learner performance on tasks using digital media has become increasingly important as the transition towards online learning programs increases. Determining the impact of implementation of instructional resources is often limited to performance outcomes and comparisons to the status quo. This study measured changes in cerebral blood velocity (CBV) of the right middle cerebral artery during visual learning tasks using static images. Transcranial Doppler ultrasonography was used to compare the changes in CBV during learning of individuals with high and low spatial ability. Our results show that there is a slight increase from baseline values of CBV in individuals with high spatial ability during the learning task for the present study. In contrast, individuals with low spatial ability experience a decrement from baseline during the learning task. These results suggest spatial ability mitigates cognitive load and potentially has an impact on learner performance on visual learning tasks.
This paper discusses an exploratory study to investigate the existence, and nature, of student problem formulation and resolution processes in an undergraduate online Problem-Based Learning (PBL) course in Agricultural Sciences. We report on the use of a content analysis instrument developed to measure problem formulation and resolution (PFR) processes in online asynchronous discussions (Murphy, 2004a, 2004b) to analyze students' text-based, online discussions. The results offer evidence that students do engage in problem formulation and resolution and that these processes appear to be consistent with the PBL process carried out in this course. However, the nature of the PBL pedagogy, at least in this instructional context, ties the PBL problems to be solved tightly to a marked assignment structure and, therefore, appears to restrict the PFR process in its early and late stages.
Determining the effect of dynamic images on learning is often limited to performance measures. This study explores the impact from the perspective of cerebral blood flow in the brain during learning. Performance and neurophysiological response in high and low spatial ability were compared during learning with dynamic images. Individuals with high spatial ability appear to be better suited to learn with complex images such as dynamic images that move in time and space. The results presented here suggest that spatial ability can help to determine the effectiveness of the media we use for teaching.
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