Effects of Communication Mode on Social Presence, Virtual Presence, and Performance in Collaborative Virtual Environments
Presence - Teleoperators and Virtual Environments
Kungliga Tekniska Högskolan ISRN KTH/NA/R--04/04--SE SE-100 44 Stockholm ISBN 91-7283-707-1 SWEDEN Akademisk avhandling som med tillstånd av Kungl Tekniska högskolan framlägges till offentlig granskning för avläggande av losoe doktorsexamen 2004-03-24 kl 10.00 i Kollegiesalen, Kungliga Tekniska Högskolan, Valhallavägen 79, Stockholm. © Eva-Lotta Sallnäs, 2004-03-24 Tryck: Universitetsservice US AB iii abstract Humans rely on all their senses when interacting with others in order to
... and collaborate efciently. In mediated interaction the communication channel is more or less constrained, and humans have to cope with the fact that they cannot get all the information that they get in face-to-face interaction. The particular concern in this thesis is how humans are affected by different multimodal interfaces when they are collaborating with another person in a shared virtual environment. One aspect considered is how different modalities affect social presence, i.e. people's ability to perceive the other person's intentions and emotions. Another aspect investigated is how different modalities affect people's notion of being present in a virtual environment that feels realistic and meaningful. Finally, this thesis attempts to understand how human behaviour and efciency in task performance are affected when using different modalities for collaboration. First of all, I would like to express a very special gratitude to my supervisor Kerstin Severinson Eklundh for her unwavering support and condence in me and my work. Her guidance has been of the greatest importance, and I was probably not even fully aware of her subtle inuence on my path nding most of the time. Kerstin has always taken time answering my questions and has continuously encouraged me in my work. My second supervisor, Ann Lantz has kept me rmly on the ground, helped me see problems in a wider perspective and she has frequently grounded me in our common background in psychology. Yngve Sundblad, my third supervisor, is the magician who makes dreams come true. Without his enthusiasm over my more elaborate ideas, in particular the haptic laboratory might not have been realized. Yngve and Ann also introduced me to the eld of human computer interaction way back during my undergraduate studies.