CHANGES IN PERFORMANCE AT A SERIAL-REACTION TASK UNDER CONDITIONS OF ADVANCE AND DELAY OE INFORMATION

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Abstract
An experiment is reported which compared, in a continuous serial choice-reaction task, the effects of giving the display signals at different points either before or after the responding limb was in a position to take appropriate action. The results indicated that substantial elements in the timing of serial, sensorimotor performance are the times required to deal with sensory data arising from limb movements and possibly, although to a lesser extent, times taken to overcome inertia in the apparatus or in a moving limb. The presence of these elementsprovided an explanation of the fact that advance information did not speed up performance as much as would be expected if the whole of the performance time was available for dealing with the signals in the display.

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