Speed-Accuracy Tradeoffs in Rapid Bimanual Aiming Movements Journal Article uri icon



  • Two experiments reported the effect of movement time and knowledge of results on overall spatial errors in rapid simultaneous bimanual aiming movements. In Exps. 1 ( n = 32) and 2 ( n = 32), participants used light, aluminum levers oriented vertically in the sagittal plane to make reversal movements over the same distance (20°–20° or 60°–60°) or different distances (20°–60°) in each arm in 250, 350, or 450 msec. to the reversal point. The participants in Exp. 1 were given knowledge of results on the spatial and temporal accuracy for both arms, while in Exp. 2 knowledge of results was provided for one arm only. Strong speed-accuracy tradeoffs were shown for all groups in both experiments, but errors were larger in the different distance movements compared to the same distance groups. Spatial errors were also elevated in Exp. 2 when knowledge of results was not available compared to those conditions where knowledge of results was available. Overall, bimanual speed-accuracy tradeoffs are similar to single arm movements when one moves the same distance in each arm and when knowledge of results is available.

publication date

  • December 1, 2005

has restriction

  • closed

Date in CU Experts

  • January 24, 2014 1:47 AM

Full Author List

  • Sherwood DE; Enebo B

author count

  • 2

Other Profiles

International Standard Serial Number (ISSN)

  • 0031-5125

Electronic International Standard Serial Number (EISSN)

  • 1558-688X

Additional Document Info

start page

  • 707

end page

  • 720


  • 101


  • 3