A Breakdown of the Psychomotor Components of Input Device Usage

This study investigates the breakdown of the psychomotor components of three different input devices, the mouse, trackball, and RollerMouse™ using the Stochastic Optimized Submovement Model. Primary movement time (PMT), Total Movement Time (TMT), Primary Movement Distance (PMD), and Total Movement Distance (TMD) were examined for each device. Results showed that psychomotor variables related to the primary phase of movement help to pinpoint how performance efficiency is affected by a particular device. For example, the relationship between %PMD and efficiency suggests that a device that affords users an initial accurate movement decreases the need for more or longer corrective submovements, thus reducing movement time.

Slocum, Jeremy. Usability News (2005). Articles>Human Computer Interaction>User Interface>Usability

Smooth or Textured: Does Mouse Pad Surface Impact Performance?

This study examined the effects of mouse pad usage on performance of a target acquisition task. Results indicated no performance difference between three specialized mouse pads, a traditional mouse pad and no mouse pad. In addition, no significant differences were found between each of the mousing surfaces based on kinematic data. The results suggest that manufacturer claims of increased performance cannot be supported by empirical evidence.

Slocum, Jeremy and Shelby Thompson. Usability News (2005). Articles>Human Computer Interaction>Usability