GTravels towards Problem Based Learning in Medical Education (VPBL)

This paper reports the results and insights ofan exploratory investigation of theeffectiveness of a prototypic virtualproblem-based learning (VPBL) exercisedelivered via the WWW, that uses HypermediaAssisted Instructional Technologies (HAIT). The study targeted all first year medicalstudents at a south-central University Schoolof Medicine who were enrolled in the humanphysiology course during the Spring 2000 (n =150). A quasi-experimental, post-test onlyresearch design compared the VPBL and atext-based version of the same PBL exercise onstudents' achievement, as measured by a set ofselected physiology examination items, andtheir perceptions of the learning environment,as measured by the Teaching and LearningEnvironment Questionnaire (TLEQ) (Chauvin &Bowdish, 1998). Findings suggest that the VPBLis equally as effective as the text-basedversion for enhancing students' learning andtheir learning environment in small group, PBLsessions. In this paper, we examine theevidence supporting the VPBL innovation andexplore what constitutes necessary andsufficient evidence that an educationalinnovation should be incorporated appropriatelyinto the medical educational practice of aschool. We examine instructional design issuessuch as learner control, instructional control,and teacher and learner roles as related toinstructional development for the WWW, bycomparing and contrasting our observations ofthe VPBL design experiment with theprofessional literature.     

The Politically and Culturally One-Sided Campus: Causes, Consequences, Remedies: Pernicious Politicization in Academe: Victims of the One-Sided Campus: Advocacy in the College Classroom

The three papers that follow were delivered on 22 April 2006 at a conference of the California Association of Scholars at the Annenberg School on the campus of the University of Southern California in Los Angeles. The aim of the panelists was to diagnose the political and cultural imbalance in higher education, to analyze its causes and consequences, and to look for remedies. Other essays from that conference may appear later in AQ.     

Science education and affect

Thought experiments are tools often used by physicists. Learning authentic physics then also means that students need to develop a familiarity with the reasoning processes of thought experiments. This study examines the nature of learning processes that involve communication about image‐based micro‐worlds in optics. The results of this study show that students’ investigations often have the structure of thought experiments. Thought experiments that use computer‐based microworlds are powerful because they capitalize on the human capability for imagery that allow learners to ‘see’ the physical processes and construct qualitative understandings. In this study, the structure of students’ activities as thought experiments arose from their collective efforts which started with the construction of an optics simulation. In the course of the activities, students’ understanding evolved from fragmented views of optical situations to system views that included multiple components. Collaborative thought experiments are therefore emergent phenomena, triggered by the events as a whole rather than being pre‐designed. In the course of the activities, students who participated in collective problem solving gradually adopted shared graphical representations and meanings.     

Problem solving and classical genetics: Successful versus unsuccessful performance

Expert-novice problem-solving research is extended in this study to include classical genetics. Eleven undergraduates (novices) and nine graduate students and instructors (experts) were videotaped as they solved moderately complex genetics problems. Detailed analysis of these “think aloud” protocols resulted in 32 common tendencies that could be used to differentiate between successful and unsuccessful problem solvers. Experts perceive a problem as a task requiring analysis and reasoning and they tend to use a knowledge-development (forward-working) approach. They make frequent checks on the correctness of their work, use accurate and detailed bookkeeping procedures, and have a broader range of heuristics to apply to the problem. It is clear that studying problem solving using the expert/novice design requires that the problems be difficult enough to require more than more recall and yet simple enough to allow novices a chance for solution. Applying elementary probability concepts seemed to be the most difficult aspect of many of the genetics problems, even for the experts.     

Effects of success and failure on emotionally handicapped boys

The study was designed to investigate the extent to which expectancies and performance of emotionally handicapped children could be altered by success- or failure-induced experiences. Students were randomly assigned to either of two experimental conditions during five trials of a guessing task. Immediately following the initial experience, all children were asked to estimate their expectancy of success on a novel learning task; students were then given a progressive matrix worksheet with ten problems which required adding and/or subtracting. It was hypothesized that those students in the success condition would have higher expectancies and actual performance scores than the children in the failure condition. It was further hypothesized that expectancy levels and performance scores would be related. An analysis of the results indicated that success and failure on a task were influential on subsequent expectancy estimates and performance; a discussion of these results is presented.