Interaction of time-uncertainty and relative signal frequency in determining choice reaction time.

1965 ◽  
Vol 70 (5) ◽  
pp. 448-451 ◽  
Author(s):  
Paul Bertelson ◽  
Jacques Barzeele
Keyword(s):  
Reaction Time ◽  
Choice Reaction Time ◽  
Signal Frequency ◽  
Time Uncertainty

Time Uncertainty and Choice Reaction Time

Nature ◽  
1960 ◽  
Vol 187 (4736) ◽  
pp. 531-532 ◽  
Author(s):  
PAUL BERTELSON ◽  
JEAN-PAUL BOONS
Keyword(s):  
Reaction Time ◽  
Choice Reaction Time ◽  
Time Uncertainty

Sequential Analysis of Effects of Time Uncertainty on Choice Reaction Time

1967 ◽  
Vol 25 (1) ◽  
pp. 285-288 ◽  
Author(s):  
D. J. Hale
Keyword(s):  
Reaction Time ◽  
Choice Reaction Time ◽  
Sequential Analysis ◽  
Sequential Effect ◽  
Time Uncertainty ◽  
Negative Recency

Forepetiods (FPs) of 0.6, 2, and 4 sec. were used in a 2-choice reaction time (RT) task. Average RT increased with increase in foreperiod. A ‘negative recency RT’ effect was found where repeated RTs were slower than alternated RTs. Analysis of RTs according to position in sequences of runs reveals a similarly shaped curve for all foreperiods. The effect of increased foreperiod is to increase the RTs of all positions in the sequence. A model for this sequential effect is discussed.

Analysis of Task Difficulty under Varying Conditions of Induced Stress

1970 ◽  
Vol 31 (2) ◽  
pp. 343-348 ◽  
Author(s):  
Jerry W. Thornton ◽  
Paul D. Jacobs
Keyword(s):  
Reaction Time ◽  
Choice Reaction Time ◽  
Reaction Time Task ◽  
Simple Reaction Time Task ◽  
Simple Task ◽  
Practical Applications ◽  
Time Task ◽  
Significant Difference ◽  
Task Relatedness ◽  
Related Stress

Two tasks (simple and choice reaction time) were examined while varying three types of stressors (shock, threat of shock, and noise) and the stressor task relationship (i.e., task-related stress, task-unrelated stress, and no-stress). Four specific hypotheses were tested and 3 were supported in the simple reaction-time task. There were no significant differences among stressors for either task, although greater differences were reported in the simple than in the choice reaction-time task. A significant difference between the “task-relatedness” of stress levels in the simple task was interpreted as possibly due to a “coping” or “protective adaptive mechanism” in which increases in performance serve to reduce stress. Practical applications were examined.

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