Abstract
Abstract An experiment was performed for the purpose of obtaining further evidence on the psychological refractory period. Two groups of five subjects completed simple and paired reaction-time responses to the appearance of visual signals, and the procedures for groups varied only in respect to the duration of stimuli. The major findings were: (a) the duration of signals had no significant effect upon either simple or paired reaction times; (b) delays in the second reaction time in paired responses persisted throughout the entire range of 50–500 millisec. between signals; (c) when the interval between signals was greater than the first reaction time in paired responses, the second reaction time was inversely related to the interval between signals; and (d) the first reaction time in paired responses was significantly longer than the simple reaction time for that member.
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