Publication Date


Document Type


Committee Members

Kevin Bennett (Committee Member), John Flach (Advisor), Thomas Hughes (Committee Member)

Degree Name

Master of Science (MS)


Woodworth's Two-Component Theory (1899) partitioned speeded limb movements into two distinct phases: (1) a central ballistic open-loop mechanism and (2) a closed-loop feedback component. The present study investigated the implementation of multi-gain control configurations that utilized separate gain values for each movement phase. A target acquisition task using Fitts' Law (1954) was performed within a virtual environment using three control devices with three gain settings: mono-gain, dual-gain and continuous gain. The gain settings differed by the amount of gain values available to the participant. It was found that dual-gain and continuous gain configurations yielded lower movement times and higher information-processing rates than the mono-gain configurations. The lower gain values presented in the dual-gain and continuous gain configurations were reported to mitigate oscillations around smaller targets that were responsible for additive settling time. Implementation of multi-gain control logic could help improve performance when navigating through large spaces and acquiring small targets.

Page Count


Department or Program

Department of Psychology

Year Degree Awarded