Search results

Different visualization strategies for structuring non-hierarchical learning tasks in hypermedia are used until now. Do these strategies differ in learning effectiveness? In the present study, a hypermedia learning environment about cell biology was investigated. The graphical properties of a content module were created in two different ways, either depicting close-up views of the cell organelles or with connecting lines between the cell organelles and their respective technical terms within the graphic of the whole cell. Students' post test performance indicate that connecting lines fostered auditory recall, that is remembering and understanding of narrative information, more efficiently than close-up views. In ...

Background Labels with special instructions regarding how a prescription medication should be taken or its possible side effects are often applied to pill bottles. The goal of this study was to determine whether the addition of illustrations to these labels affects patient comprehension. Methods Study participants (N = 130) were enrolled by approaching patients at three family practice clinics in Toronto, Canada. Participants were asked to interpret two sets of medication instruction labels, the first with text only and the second with the same text accompanied by illustrations. Two investigators coded participants' responses as incorrect, partially correct, or completely correct. Health literacy levels ...

Previous research is equivocal regarding the most effective methods of presenting quantitative information displays. The differences in results may be due to numerous reasons including the display and inquiry type. This study examines several methods of displaying quantitative information (e.g., line graphs, line grables, bar charts, bar grables, tables, pie charts and pie grables) that were factorially crossed with different kinds of data extraction inquiries (i.e., questions about exact numerical quantities, comparisons, and trends). Grables are displays that combines features of graphs and tables including specific numerical information with each graphically presented category. Results showed that tables, bar grables and ...

The effects of computer animations and mental animation on people's mental models of a mechanical system are examined, in 3 experiments, students learned how a mechanical system works from various instructional treatments including viewing a static diagram of the machine, predicting motion from static diagrams. viewing computer animations, and viewing static and animated diagrams accompanied by verbal commentaries. Although students' understanding of the system was improved by viewing both static and animated diagrams, there was no evidence that animated diagrams led to superior understanding of dynamic processes compared to static diagrams. Comprehension of diagrams was enhanced by asking students questions ...

The effects of computer animations and mental animation on people's mental models of a mechanical system are examined, in 3 experiments, students learned how a mechanical system works from various instructional treatments including viewing a static diagram of the machine, predicting motion from static diagrams. viewing computer animations, and viewing static and animated diagrams accompanied by verbal commentaries. Although students' understanding of the system was improved by viewing both static and animated diagrams, there was no evidence that animated diagrams led to superior understanding of dynamic processes compared to static diagrams. Comprehension of diagrams was enhanced by asking students questions ...

To assess the effectiveness of absolute risk, relative risk, and number needed to harm formats for medicine side effects, with and without the provision of baseline risk information. A two factor, risk increase format (relative, absolute and NNH) baseline (present/absent) between participants design was used. A sample of 268 women was given a scenario about increase in side effect risk with third generation oral contraceptives, and were required to answer written questions to assess their understanding, satisfaction, and likelihood of continuing to take the drug. Provision of baseline information significantly improved risk estimates and increased satisfaction, although the estimates were still ...

The effects of computer animations and mental animation on people's mental models of a mechanical system are examined, in 3 experiments, students learned how a mechanical system works from various instructional treatments including viewing a static diagram of the machine, predicting motion from static diagrams. viewing computer animations, and viewing static and animated diagrams accompanied by verbal commentaries. Although students' understanding of the system was improved by viewing both static and animated diagrams, there was no evidence that animated diagrams led to superior understanding of dynamic processes compared to static diagrams. Comprehension of diagrams was enhanced by asking students questions ...

The content of TV news is often not retained or understood by the audience. This article discusses a concept for increasing retention and comprehension levels relating to TV news. Results of an experimental reception analysis with 215 participants show that retention and comprehension can be improved by employing a narrative device to present TV news. Adopting a narrative form for TV news also gives a clearer distance and perspective to the news content, which has advantages for social communication. ...

In this article, the effect of a local, content (as opposed to structure) oriented navigation tool is investigated, i.e. mouse-over hyperlink previews. A usability experiment is described in which three groups of participants were exposed to three different versions of a website: without hyperlink previews, with content oriented, semantic previews, and with task-oriented, pragmatic previews. Participants were asked to execute search and recall tasks, and to evaluate task and hypertext. The results showed a decisive overall advantage for previews in terms of efficiency, but no effects on effectiveness or appreciation. Although semantic and pragmatic previews did not differ significantly, a ...

The role of the probation service within the Criminal Justice System is to provide support to probationees so they can serve out their probation orders in accordance with certain regulations. These regulations are expressed in a formal contract. The current article reports an assessment of the readability of the current Kent Probation Service's users' contract. A Flesch (1948) analysis of the original document indicated that it required an IQ of 111+ for full comprehension. Using several criteria suggested by the Flesch formula and other literature, the document was revised to improve its readability. Analysis revealed the revised document to require ...