OU - Faculty and Staff Publications

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Browsing OU - Faculty and Staff Publications by Author "Abbas Johari"

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    Effects of an Online Visual Procedure on Task Completion, Time, and Attitude
    (Journal of Educational Computing Research, 2003-12-01) Amy C. Bradshaw; Abbas Johari
    Although substantial literature exists regarding learning with visuals, most consider text the primary channel with varying amounts of visuals explored as a secondary channel. This study considered the effectiveness of visuals-only procedural guides versus visuals plus added text, using visuals as the primary channel and using visuals developed from screen shots to eliminate the need to create a visual, stand-in vocabulary. There was no difference in the level of successful task completion between treatment groups. The time required to complete the task was measured and there were significant differences in the amount of time required by treatment group, age, and sex. Both treatment groups responded favorably to the procedures on a follow-up attitude questionnaire. Implications of the study and suggestions for further research are discussed.
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    Effects of White Space in Learning via the Web
    (Journal of Educational Computing Research, 2002-03-01) Amy C. Bradshaw; Abbas Johari
    This study measured the effect of specific white space features on learning from instructional Web materials. The study also measured learners' beliefs regarding Web-based instruction. Prior research indicated that small changes in the handling of presentation elements can affect learning. Achievement results from this study indicated that in on-line materials, when content and overall structure are sound, minor differences regarding table borders and vertical spacing in text do not hinder learning. Beliefs regarding Web-based instruction and instructors who use it did not differ significantly between treatment groups. Implications of the study and cautions regarding generalizing from the results are discussed.