The effects of noise on visual discrimination performance was investigated. Eight subjects performed a line-judgment task at three levels of noise (55, 70, 85 dBA) and two levels of task complexity (single and dual task). Although there was no reliable effect of noise on visual discrimination performance (i.e., speed and accuracy), there was, however, a reliable task complexity effect: single-task (task performed alone) average response time was reliably shorter than dual-task (task paired with itself) average response time.
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