The purpose of this thesis was to extend the understanding of how complementary motion and visual cues affect performance in perceptual tasks in dynamic motion seats. In Experiment 1, participants received motion cues from a dynamic motion seat and a visually presented attitude indicator that simultaneously displayed bank angles of 10°, 20°, 30°, and 40°. Participants were required to estimate each bank angle from the attitude indicator. The addition of motion cues from the motion seat that were consistent with the attitude-indicator did not improve performance compared to when no motion
seat cues were provided. The addition of inconsistent cues from the motion seat reduced estimate accuracy. Experiment 2 was identical to Experiment 1 except that participants were required to estimate bank angles from the motion seat. The addition of consistent visual cues increased estimate accuracy compared to having no visual cues, and inconsistent visual cues decreased estimate accuracy.