In the research field of Ergonomics and Human Factors, Fitts Law has been widely studied by researchers from various aspects and applications. In this study, a validation experiment is conducted to reveal how the Fitts Law works with the difference in the reaction speed of the mouse cursor (aka. the D/C Ratio or Mouse Gain) using a hand-controlled computer mouse as an input device. The time to perform a hand control movement and its endpoint variability are two important properties when the hand movement model is being investigated. In total 16 subjects participated in this study using a computer mouse, where movement time and endpoint variability are measured to verify the models. Comparing with previous research, a relatively high D/C ratio (38.6) is also investigated. Objecti...[ Read more ]

In the research field of Ergonomics and Human Factors, Fitts Law has been widely studied by researchers from various aspects and applications. In this study, a validation experiment is conducted to reveal how the Fitts Law works with the difference in the reaction speed of the mouse cursor (aka. the D/C Ratio or Mouse Gain) using a hand-controlled computer mouse as an input device. The time to perform a hand control movement and its endpoint variability are two important properties when the hand movement model is being investigated. In total 16 subjects participated in this study using a computer mouse, where movement time and endpoint variability are measured to verify the models. Comparing with previous research, a relatively high D/C ratio (38.6) is also investigated. Objectives of this study are to verify Fitts’ Law for both ballistic and visual controlled movements, an Endpoint Variability model for ballistic movements, and discover patterns of an Endpoint Variability model for visual controlled movements under a wide range of D/C ratio. Eventually, this study can provide supportive knowledge of hand-controlled computer input device for Human-Computer Interaction Designers. Therefore, when a computer interface or a computer game is designed, the movement time between UI objects can be estimated with a given gain, and also applied to the field of virtual reality UI and UX designs.

Keywords

Fitts’ Law, Ballistic Movement, Visual Controlled Movement, Human-Computer Interface, Mouse Gain, D/C Ratio;