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Perceptibility and utility of sticky targets

Perceptibility and utility of sticky targets,10.1145/1375714.1375726,Regan L. Mandryk,Carl Gutwin

Perceptibility and utility of sticky targets   (Citations: 7)
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Researchers have suggested that dynamically increasing control- to-display (CD) gain can assist in targeting, by increasing the effective width of targets in motor space, which makes targets feel sticky. Although this method has been shown to be effective, there are several unexplored issues that could affect its use in real-world interfaces. One of these is perceptibility: in particular, the difference between the perceptibility and the utility of the technique. If CD gain changes are highly noticeable even at levels that are not helpful, the technique could be seen as overly intrusive. If CD gain changes are more useful than noticeable, however, the technique could be applied more widely. To explore this issue, we carried out a study that tested both the utility and the perceptibility of CD gain in single-target selection tasks. We found that although even small amounts of gain reduction significantly improved targeting times, participants did not consistently notice the effect until the gain difference was much higher. Our results provide new understanding of how changes in CD gain are experienced by users, and provide initial evidence to suggest that sticky targets can benefit users without a high perceptual cost.
Conference: Graphics Interface - GI , pp. 65-72, 2008
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    • ...Andreas, Gerall, Green, & Murphy, 1957; Arnaut & Greenstein, 1986; Chase, Cullen Jr, Openshaw, & Sullivan, 1965; Johnsgard, 1994; Mandryk & Gutwin, 2008; Hammerton, 1962; Schaab, Radwin, Vanderheiden, & Hansen, 1996)...

    J. C. F. de Winteret al. The effects of control-display gain on performance of race car drivers...

    • ...This approach though can enable people to be more accurate without noticing the help they are getting [36]...

    Juan Pablo Hourcadeet al. Pointassist for older adults: analyzing sub-movement characteristics t...

    • ...Studies of these techniques [26] show that subtle gain changes are more acceptable to users and can still provide a performance benefit...
    • ...We disabled pointer acceleration [6] for this study, as prior studies have done [5,26,36], to avoid confounding multiple sources of gain change...

    Jacob O. Wobbrocket al. The angle mouse: target-agnostic dynamic gain adjustment based on angu...

    • ...A number of different assistance techniques have been proposed and tested for desktop environments which use mouse-based pointing: sensorybased acquisition feedback techniques [2,3,10,11,15,19,28], cursor-warping methods [1,4,18,20], expansions of the target in both visual space [7,24] and motor space [1, 7,10,11,20,24,37]), and reduction of target distances [1,4,6,18,31]...
    • ...A number of different assistance techniques have been proposed and tested for desktop environments which use mouse-based pointing: sensorybased acquisition feedback techniques [2,3,10,11,15,19,28], cursor-warping methods [1,4,18,20], expansions of the target in both visual space [7,24] and motor space [1, 7,10,11,20,24,37]), and reduction of target distances [1,4,6,18,31]...
    • ...Researchers have found that sticky targets can improve aiming time in both 1D [7,10,11,20] and 2D [37] tasks, particularly for small targets [11]...
    • ...In addition, previous work has shown that users‟ perceptions of stickiness is not as strong as the effect itself – at low to moderate levels of the effect, users rarely notice it [20]...
    • ...We selected sticky targets for investigation because it has been shown to provide both performance gains [7,10,11,20, 37] and have low perceptibility [20]...
    • ...We selected sticky targets for investigation because it has been shown to provide both performance gains [7,10,11,20, 37] and have low perceptibility [20]...

    Scott Batemanet al. Investigation of Targeting-Assistance Techniques for Distant Pointing ...

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