Pointing in Entertainment-Oriented Environments: Appreciation versus Performance J.H.D.M. Westerink and K. van den Reek Abstract Multimedia applications for consumer entertainment often employ a point-and-select interaction style, borrowed from more task-oriented computer applications. The environment of use and the pointing devices involved are so different, however, that a higher importance should be attributed to the users' appreciation of the pointing device than to its efficiencyor any other objective performance measure. We set up an experiment to investigate how appreciation and performance measures relate. The experiment involved six different input devices, two CD-i titles and 16 subjects making both voluntary and prescribed cursor control movements. For the mouse-like pointing devices we obtained a Fitts' Law-like dependence on target width and target distance. This was, however, not replicated for any of the other input devices, mainly owing to a positive influence of cursor constraints. Concerning the relation of the performance measures with the users' appreciation, we found that neither time-to-target nor relative-path-length on its own is a reliable indicator of the users' appreciation. Together, however, they might explain the appreciation scores to a considerable extent. For these latter environments, research on pointing devices is quite extensive: it includes the physical characterization
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