scholarly journals Sex composition and group performance in a visual signal detection task

1973 ◽  
Vol 1 (3) ◽  
pp. 251-255 ◽  
Author(s):  
David E. Clement ◽  
Joseph J. Schiereck
Keyword(s):  
Signal Detection ◽  
Group Performance ◽  
Detection Task ◽  
Visual Signal ◽  
Sex Composition ◽  
Signal Detection Task

Group Performance in a Visual Signal-Detection Task

1973 ◽  
Vol 15 (1) ◽  
pp. 43-52 ◽  
Author(s):  
David E. Clement
Keyword(s):  
Signal Detection ◽  
Target Location ◽  
Group Performance ◽  
Group Decision ◽  
Individual Performance ◽  
Detection Task ◽  
Practice Effects ◽  
Visual Signal ◽  
Decision Threshold ◽  
Signal Detection Task

Sixteen male subjects were run in groups of four on 720 trials of a 16-alternative, forced-choice, visual signal-detection task. The first and third blocks of 240 trials required individual judgments concerning target location. The second block of 240 trials required a group decision as to target location for two groups of subjects, and individual responses followed by a group decision for the other two groups. Comparisons were made among individual performance, real group performance, and the performance of two types of pseudogroup (derived from individual data) using an information-integration and a decision-threshold model. Group performance was better than individual performance, and was midway between the performances predicted by the two pseudogroup models, indicating that neither of the latter were adequate models for group performance. Real groups showed some characteristics both of independence and dependence among subjects, with some apparent use of logical decision rules in pooling individual information. Groups which made both individual and group responses on the second block of trials showed greater increases in sensitivity with practice than groups which made only group responses. It appeared that making individual responses had specific practice effects on subsequent individual performance, and these effects were greater in magnitude than the practice effects resulting from making group responses.

scholarly journals Vortioxetine Differentially Modulates MK-801-Induced Changes in Visual Signal Detection Task Performance and Locomotor Activity

2018 ◽  
Vol 9 ◽  
Author(s):  
Todd M. Hillhouse ◽  
Christina R. Merritt ◽  
Douglas A. Smith ◽  
Manuel Cajina ◽  
Connie Sanchez ◽  
...  
Keyword(s):  
Locomotor Activity ◽  
Signal Detection ◽  
Task Performance ◽  
Detection Task ◽  
Visual Signal ◽  
Mk 801 ◽  
Signal Detection Task ◽  
Induced Changes

scholarly journals Effects of Acute and Sustained Pain Manipulations on Performance in a Visual-Signal Detection Task of Attention in Rats

2015 ◽  
Vol 76 (4) ◽  
pp. 194-203 ◽  
Author(s):  
Kelen C. Freitas ◽  
Todd M. Hillhouse ◽  
Michael D. Leitl ◽  
Steve S. Negus
Keyword(s):  
Signal Detection ◽  
Detection Task ◽  
Visual Signal ◽  
Signal Detection Task

Impairment of Cognition, Risk-Taking, and Self-Perception by Alcohol

1989 ◽  
Vol 69 (1) ◽  
pp. 199-210 ◽  
Author(s):  
Steven Mongrain ◽  
Lionel Standing
Keyword(s):  
Signal Detection ◽  
Risk Taking ◽  
Detection Task ◽  
Visual Signal ◽  
Perceptual Decision Making ◽  
Impaired Performance ◽  
Massive Dose ◽  
Driving Task ◽  
Signal Detection Task ◽  
Perceptual Motor Skills

The effects of alcohol on risk-taking, visual signal detection, and perceptual-motor skills were examined under controlled conditions. Skill in two videogame tasks (driving and racquetball simulations) was unaffected by a massive dose of alcohol, whereas risk-taking in the driving task was increased. Alcohol also impaired performance on the signal-detection task, decreasing both perceptual vigilance and caution ( d' and beta). The dependent measures yielded minor correlations with personality and biographical variables, although men were more skilled and riskier in their behaviour than women. A second experiment employing the signal-detection task indicated that even moderate doses of alcohol can significantly impair visual perception and perceptual decision making. Both studies showed that subjects who receive a massive dose of alcohol (bac .12% or .16%) significantly underestimate the amount consumed, and rate themselves as being much less than totally drunk.

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