Shelby Thompson

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The current experiment suggests that the speed/accuracy tradeoff is composed of two classes of constraints, effector and task. We examined the effects of movement distance, target size, orientation of the movement in the workspace, and C-D gain on the kinematics of discrete pointing movements made with computer mouse. It was found that target size(More)
Modern tools often separate the visual and physical aspects of operation, requiring users to manipulate an instrument while viewing the results indirectly on a display. This can pose usability challenges particularly in applications, such as laparoscopic surgery, that require a high degree of movement precision. Magnification used to augment the view and,(More)
This study examined the impact of movement scale and joint set on the trajectories of rapid pointing movement made with a mouse. Participants manipulated a mouse to point a cursor to targets on a display of varying size and distance. The mouse movement was scaled independently of the display size by varying the control gain. Large-scale movements involving(More)
Recent work has emphasized the distinction between task and effector constraints underlying performance in Fitts' type discrete pointing tasks. We explored the relative contributions of these constraints in a cursor-pointing task by manipulating the control-display scale, thereby dissociating movement scale at the level of the hand from movement scale at(More)
Journalism matters to us all. I believe that or I wouldn't have spent my working life as a journalist and then as a lecturer in journalism, training students in the skills they'll need if they want to be reporters and writers of features. Some of the skills have changed-familiarity with HTML or how to produce a podcast wasn't needed when I worked for the(More)
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