DISRUPTION OF OFFICE-RELATED TASKS BY SPEECH AND OFFICE NOISE

Three experiments examine what is widely reported to be one of the mos t common forms of interference in open-plan office environments-the ef fect of background noise. Experiment 1 investigates whether office noi se (with or without speech) is disruptive to two office-related tasks: memory for prose and mental arithmetic. The results show that whereas office noise with speech disrupts performance on both tasks, office n oise without speech disrupts performance on the mental arithmetic task only. Experiment 2 investigates the memory for prose task more closel y by varying the duration and the meaning of the background noise. Exp eriment 3 examines whether the meaning of speech is important to the d isruption of a mental arithmetic task. The results show that both spee ch and office noise can disrupt performance on memory for prose and me ntal arithmetic tasks, and the effect is independent of the meaning of the irrelevant speech. These results are presented and interpreted in light of current research and theories regarding the effect of backgr ound noise.