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Auflistung nach Schlagwort "scale"

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  • Konferenzbeitrag
    ATI-S -- An Ultra-Short Scale for Assessing Affinity for Technology Interaction in User Studies
    (Mensch und Computer 2019 - Tagungsband, 2019) Wessel, Daniel; Attig, Christiane; Franke, Thomas
    In research and development in general, and in user-centered design (UCD) in particular, participants of studies have to be representative for the target audience. However, given the voluntary participation in user studies and an ensuing self-selection bias, participants of user studies likely prefer to engage with technology more strongly than the target audience in general (i.e., they have a higher affinity for technology interaction, ATI). Unchecked, this potential bias might lead to products that neglect important user groups or miss valuable market niches. At the same time, participants’ time is limited, so assessment of ATI must be economical. Thus, we propose an ultra-short ATI scale derived from the ATI scale by [10]. ATI-S was developed using theoretical considerations and empirical analyses. It provides a sufficiently reliable and valid assessment of ATI in conditions with strict time-constraints, in which the full ATI scale cannot be used.
  • Konferenzbeitrag
    What you see isn't necessarily what you get: testing the influence of polygon count on physical and self-presence in virtual environments
    (Mensch und Computer 2020 - Tagungsband, 2020) Volkmann, Torben; Wessel, Daniel; Caliebe, Tim Ole; Jochems, Nicole
    A key characteristic for the effectiveness of Virtual Reality Environments is a high sense of presence -- the feeling of being in that virtual place, even though being physically in another location. For a more differentiated perspective on presence, the term can be defined by subtypes, such as physical, social and self-presence. The Multimodal Presence Scale (MPS) by Makransky and colleagues deals with these dimensions, was translated into German, and evaluated regarding the sensitivity and specificity of the social presence subscale. The results raise the question how well differences in physical and self-presence can be detected by the scale. We conducted an experiment by constructing two virtual worlds, manipulating the polygon count of objects in each world, and measuring presence. Additionally, we assessed the correlation of the MPS with the Igroup Presence Questionnaire (IPQ). No significant differences in physical or self-presence were found. However, when examining an item that closely matches the manipulation of the self-presence world (the user's virtual hands), a statistically significant difference was found. We provide three possible explanations for these results: 1) an insufficient impact of the abstraction levels, e.g., due to insufficient time and attention to the manipulation, or too little difference between the abstraction levels, 2) a lack of sensitivity of the used MPS and IPQ, or 3) the polygon count not being important for physical or self-presence. We conclude that high polygon count might not be that crucial for presence and provide suggestions for future research.