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Measuring Cognitive Load for different Input Modalities
Citation key schaffer2011b
Author Schaffer, Stefan and Schleicher, Robert and Möller, Sebastian
Title of Book 9. Berliner Werkstatt Mensch-Maschine-Systeme
Pages 287–292
Year 2011
ISBN 978-3-18-303322-5
ISSN 1439-958X
Location Berlin
Volume Fortschritt-Berichte VDI
Number 33
Month oct
Publisher VDI Verlag
Series 22
Abstract This paper describes a user study investigating the influence of different input modalities (speech and touch screen) on perceived cognitive workload. The participants performed several tasks with a smart phone application in two blocks. In each block the usage of only one specific input modality was allowed. After each task the participants assessed their perceived cognitive workload with a one-dimensional and a multidimensional workload questionnaire. The number of interaction steps to solve the task was varied. It is shown that perceived cognitive workload increases with increasing number of interaction steps. Further speech input was significantly more demanding then touch screen input.
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