Yvonne Rogers is a cognitive scientist with interests in the human aspects of ubiquitous computing, the design of external representations and the critique of theory in HCI; she is a professor in the Department of Computing at The Open University, UK.Youn-kyung Lim is a design researcher with interests in understanding the nature of design practice, bringing experience-centered approaches into design of novel technologies, and connecting theory and practice; she is an assistant professor in the Department of Industrial Design at KAIST, South Korea.William R. Hazlewood is a computer scientist with interests in the implementation, use, and evaluation of ambient information devices; he is a PhD student in the School of Informatics at Indiana University, Bloomington, USA.Paul Marshall is a cognitive scientist with interests in the design and evaluation of novel technologies and representations for working and learning; he is a postdoctoral research fellow in the Department of Computing at The Open University, UK. Shareable Interfaces -3 -
ABSTRACTComputers designed for single use are often appropriated sub-optimally when used by small co-located groups working together. Our research investigates whether shareable interfaces-that are designed for more than one user to interact with-can facilitate more equitable participation in co-located group settings compared with single user displays. We present a conceptual framework that characterizes Shared Information Spaces (SISs) in terms of how they constrain and invite participation using different entry points. An experiment was conducted that compared three different SISs: a physical-digital set up (least constrained), a multi-touch tabletop (medium) and a laptop display (most constrained). Statistical analyses showed there to be little difference in participation levels between the three conditions other than a predictable lack of equity of control over the interface in the laptop condition. However, detailed qualitative analyses revealed more equitable participation took place in the physical-digital condition in terms of verbal utterances over time. Those who spoke the least contributed most to the physical design task. The findings are discussed in relation to the conceptual framework and, more generally, in terms of how to select, design and combine different display technologies to support collaborative activities.Shareable Interfaces -4 -
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