Abstract
Recent research associated with three major types of effect of noise on human performance is discussed: 1) Loud noise influences information processing by inducing verbal strategies which may persist after the noise has been turned off, and if verbal strategies are already in use, noise encourages their more fervent adoption. 2) Loud noise also elevates the person's state of arousal. Its effects are qualitatively similar to the effects of fatigue due to mental work and, in some ways, to the effects of wakefulness over the day. 3) Irrelevant speech interferes with reading and memory. The effects appear to be independent of intensity and, for memory at least, independent of the meaning of the speech. Speech appears to have privileged access to (and hence opportunities to disrupt) high-level processing mechanisms essential to efficiency in children's reading and to performance in the modern office environment. Arising from an analysis of these findings, a number of emerging research issues are discussed.
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