scholarly journals Stimulus uncertainty, response uncertainty, and stimulus-response compatibility as determinants of schizophrenic reaction time performance

1976 ◽  
Vol 8 (6) ◽  
pp. 425-427 ◽  
Author(s):  
D. R. Hemsley
Keyword(s):  
Reaction Time ◽  
Response Compatibility ◽  
Response Uncertainty ◽  
Stimulus Uncertainty ◽  
Stimulus Response ◽  
Time Performance ◽  
Reaction Time Performance ◽  
Schizophrenic Reaction ◽  
Stimulus Response Compatibility

Does Immediate Arousal Enhance Response Force in Simple Reaction Time?

1996 ◽  
Vol 49 (4) ◽  
pp. 972-990 ◽  
Author(s):  
Rolf Ulrich ◽  
Stefan Mattes
Keyword(s):  
Reaction Time ◽  
Warning Signal ◽  
Response Force ◽  
Response Compatibility ◽  
Response Signal ◽  
Alternative Account ◽  
Stimulus Response ◽  
The Third ◽  
Stimulus Response Compatibility ◽  
Compatibility Hypothesis

Three experiments assessed the hypothesis that immediate arousal enhances response force in speeded reaction-time tasks. Immediate arousal was manipulated via the physical characteristics of a warning signal that closely preceded the imperative response signal. The first experiment revealed that responses were more forceful and faster for a loud than for a soft warning signal. The second experiment manipulated the duration of an auditory warning signal; more forceful but slower responses were obtained for longer durations of the warning signal. The third experiment employed a visual warning signal, and its intensity was either rather weak or moderately bright; more forceful responses and slightly faster responses were observed for the brighter warning signal. Although the results of Experiment 1 and 2 may agree with an arousal account, the findings of Experiment 3 argue against such an account. A stimulus-response compatibility hypothesis is suggested as one possible alternative account.

Redundancy-associated deficit in schizophrenic reaction time performance.

1972 ◽  
Vol 80 (3) ◽  
pp. 299-307 ◽  
Author(s):  
Anthony Bellissimo ◽  
Richard A. Steffy
Keyword(s):  
Reaction Time ◽  
Time Performance ◽  
Reaction Time Performance ◽  
Schizophrenic Reaction

Stimulus-Response Compatibility in a Small Sample of Cerebral Palsied Adults

1994 ◽  
Vol 79 (3_suppl) ◽  
pp. 1459-1474 ◽  
Author(s):  
Miriam Legare ◽  
Camilla Wolak ◽  
Beverly Doyle
Keyword(s):  
Reaction Time ◽  
Linear Function ◽  
Compatibility Condition ◽  
Movement Time ◽  
Response Compatibility ◽  
Stimulus Response ◽  
Positive Linear Function ◽  
Aimed Movement ◽  
Index Of Difficulty ◽  
Stimulus Response Compatibility

Stimulus-response compatibility refers to the correspondence between a sensory event and the motor response which it specifies. A discrete aimed movement task with two conditions of stimulus-response compatibility tested whether higher compatibility would decrease the reaction time of 5 subjects with normal movement and 6 subjects with cerebral palsy. A board with 3 distances (13.5, 28.0, 40.5 cm) along each of 3 rays (45°, 90°, 135°) provided 9 target sites for a detachable leaf switch. A light on the switch was turned off or on for the low or high compatibility condition. The independent variables were the Index of Difficulty, target position and compatibility. The dependent variables were reaction time and movement time. The reaction times for both groups were less during the high compatibility condition than during the low compatibility condition as shown by a t test for differences between means. Multiple regression analyses showed that reaction time of the normal group was a positive linear function of compatibility and movement time was a positive linear function of the Index of Difficulty for both groups and of position for the normal group, 3 normal subjects and 2 cerebral palsied subjects. There were indications of ballistic rather than aimed movements. The results are discussed with regard to the role of visual fixation in aimed movement, the similarities between groups in conformance to Fitts' Law and differences between groups in reaction and movement times.

Time-linked impairment in schizophrenic reaction time performance.

1975 ◽  
Vol 84 (4) ◽  
pp. 315-324 ◽  
Author(s):  
Richard A. Steffy ◽  
Karen Galbraith
Keyword(s):  
Reaction Time ◽  
Time Performance ◽  
Reaction Time Performance ◽  
Schizophrenic Reaction
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