Irrelevant Speech Disrupts Item-Context Binding
Abstract
The present study examines the effects of irrelevant speech on immediate memory. Previous research led to the suggestion that auditory distractors particularly impair memory for serial order. These findings were explained by assuming that irrelevant speech disrupts the formation and maintenance of links between adjacent items in a to-be-remembered sequence, resulting in a loss of order information. Here we propose a more general explanation of these findings by claiming that the capacity to form and maintain item-context bindings is generally impaired by the presence of auditory distractors. The results of Experiment 1 show that memory for the association between an item and its background color is drastically impaired by irrelevant speech, just as memory for the association between an item and its serial position. In Experiment 2 it was examined whether the disrupting effects of irrelevant sound are limited to memory for item-context associations or whether item memory is also affected by the auditory distractors. The results revealed that irrelevant speech disrupts both item memory and item-context binding. The results suggest that the effects of irrelevant sound on immediate memory are more general than previously assumed, which has important theoretical and applied implications.
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