Feedback and Noise-Signal Detection at Three Performance Levels
- 1 March 1965
- journal article
- research article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 37 (3) , 434-438
- https://doi.org/10.1121/1.1909347
Abstract
The effect of the presence or absence of feedback, or immediate positive reinforcement, was studied at 3 performance levels: 88%, 75%, and 62% correct. The BUDTIF (Block Up and Down, Two-Interval[long dash]Forced-choice) experimental procedure was utilized. Signal-to-noise ratios were varied in a 104-trial run (about 7 min) so as to maintain the desired performance level. The noise was set to 35 dB SL [decibel sensory limen] One group of naive subjects was used; each subject was presented one of the 6 conditions of performance level and feedback for 5 consecutive runs. Another group of experienced subjects was presented with all 6 conditions in each of 61-h sessions. Threshold signal-to-noise ratios, intrarun variability of levels utilized, the time per run, and interrun variability were determined. No statistically significant and systematic effect of feedback was f ound.Keywords
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