Graphic design for computer graphics
Computers in Industry
Information Visualization: Design for Interaction (2nd Edition)
Information Visualization: Design for Interaction (2nd Edition)
A vision for information visualization in information science
Proceedings of the 2011 iConference
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The limited viewing space provided by online assessment tools makes it difficult for a student to view supportive graphics, scripts or diagrams where the viewing screen is smaller than the complete question. This paper reports on the user centred design and the application of a bifocal information visualisation technique for the display of graphics of an online multiple choice assessment tool. Traditional online tests require the students to scroll down the viewing page to study a question's supporting graphic or diagram and then scroll up again to insert their response. In many instances, this drastically increased the level of tension in a student, who would lose sight of the graphic when answering the question. Consequently, the increased cognitive load often resulted in errors. We provide a presentation technique that displays the question in readable text with a compressed, distorted vision of the supportive graphic/diagram. This enables students to focus on the graphic when considering their answer while not losing sight of the question itself. Furthermore, it allows the student to toggle freely between a focus on the graphic and the question. Our evaluation of this bifocal display demonstrates a notable decrease in errors being made during transcription of answers, and a decrease in the stress level for students during the test.