Inhalt des Dokuments
- © Copyright??
• Multimodal Human-Computer Interaction
• Model-based Usability Evaluation
• User Modeling
Stefan Schaffer studied Communication Science and Computer Science at the Technical University Berlin. In 2009 he completed his degree and received the Willumeit prize  for his Magister thesis. He has joined the research training group prometei  and is currently working towards his PhD thesis in the domain of model-based usability evaluation of multimodal systems.
Technische Universität Berlin
Sekretariat FR 2-6
Tel: +49 (30) 314 - 29637
Fax: +49 (30) 314 - 25996
|Autor||Schaffer, Stefan and Schleicher, Robert and Möller, Sebastian|
|Buchtitel||9. Berliner Werkstatt Mensch-Maschine-Systeme|
|Zusammenfassung||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.|