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Collaboration technologies are difficult to design due to the complex myr-iad of social, cognitive, and communicative aspects of group interactions. New interaction technologies like multitouch sharable interfaces, such asdigital tabletops, have lead to a renewed interest in designing collaborativetechnologies. This thesis focuses on turn-taking protocols as a coordinat-ing mechanism during collaborative work with digital tabletops. The goalwas to develop new conceptual designs and interactive mechanisms to sup-port face-to-face collaborations of small groups. Inspired by ethnographicalstudies of collaborative work and theories in distributed cognition and re-lated theories of language and action a model of collaborative turn-takingwas developed. Moreover, the thesis presents five design concepts and in-teraction components for the digital tabletop that exemplifies the differentproperties of the model. |
