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The purpose of the experiment was to observe the effect of varying the number of alternatives on choice reaction time in a task having an initial high degree of compatibility. The stimuli were presented as vibrations of relay armatures to 1, 2, 4, or 8 fingers separately, and the response was to depress the armature by the finger so stimulated. The results showed a difference between simple reaction time and two-choice times, but no systematic differences among 2, 4, or 8 choice times. The implications for further research are discussed.
J. A. Leonard (Fri,) studied this question.