Wikis as shared digital artifacts may enable users to participate in processes of knowledge building. To what extent and with which quality knowledge building can take place is assumed to depend on the interrelation between people's prior knowledge and the information available in a wiki. In two experimental studies we examined the impact on…

Can increasing the speed of audio narration in multimedia instruction decrease training time and still maintain learning? The purpose of this study was to examine the effects of time-compressed instruction and redundancy on learning and learners' perceptions of cognitive load. 154 university students were placed into conditions that consisted of…

The expertise reversal effect occurs when a learner's expertise moderates design principles such as the redundancy principle (i.e., redundant information should be excluded rather than included) derived from the cognitive load theory. Although this effect is supported by numerous experiments, indicating an overall large effect size, a variety of…

This study was designed to examine the effect of the redundancy principle in a multimedia presentation constructed for foreign language vocabulary learning on undergraduate students' retention. The underlying hypothesis of this study is that when the students are exposed to the material in multiple ways through animation, concurrent narration,…

Although ubiquitous learning enhances students' access to learning materials, it is crucial to find out which media presentation modes produce the best results for English listening comprehension. The present study examined the effect of media presentation mode (sound and text versus sound) on English listening comprehension and cognitive load.…

Describes two experiments conducted with Australian high school students that investigated the use of self-contained, screen-based material for learning new computer application programs as opposed to using manuals and computer screen information that requires split-attention. Discusses redundancy and the need to reduce extraneous cognitive load.…

Describes the application of audio as a vehicle of information. In applying audio to the audiovisual, computer-assisted instruction format, a consideration of the aspects of dominance and redundancy in auditory-visual presentation is required. Understanding acoustic and informational characteristics of audio and qualities of voice and speech may…

Research employed two types of redundancy, each having two levels, at each stage of a programed sequence of non-verbal concept learning tasks. One type involved amount of variation and repetition of exemplars; the other, strength of feedback. A researcher presented tasks to 4th, 5th, and 6th graders, simulating a computer graphic display. The…

A study was developed to evaluate the effectiveness of a preinstruction retention index (designed to maximize recall of mathematical concepts by predicting the idiosyncratic number of examples per mathematical concept required by each student). Subjects, 27 female and 26 male eighth grade students, were administered a retention measure through…

Reports on a study investigating the importance of audio and textual redundancy in a computer-based, multimedia training program with identical content that undergraduate students used under one of the following conditions: full-text and totally redundant audio delivery; partial-text with full audio delivery; or graphics only with full audio…