Immediate serial recall is seriously disrupted by to-be-ignored sound. According to the embedded-processes model, auditory distractors elicit attentional orienting that draws processing resources away from the recall task. The model predicts that interference should be attenuated after repeated exposure to the auditory distractors. Previous failures to observe evidence for habituation can be explained by assuming that habituation to complex distractor features depends on the availability of working memory resources. Here we demonstrate that the irrelevant sound effect is attenuated after passive listening to the auditory distractors during a preexposure phase prior to the serial recall task. Experiment 1 shows that the irrelevant sound effect is abolished after 20 min of passive listening to the distractor speech. Experiments 2-4 show that irrelevant sound interference is significantly reduced after listening to distractors for 45 s. As predicted by the habituation hypothesis, an attenuation of interference occurs only when the distractor material matches the material played in the preexposure phase (Experiment 5). The results support an attentional conceptualization of the irrelevant sound effect.

The irrelevant sound effect refers to a decrement in serial-recall performance when auditory distractors are played during encoding or retention of the to-be-remembered items. We examined the event-related brain potentials (ERPs) that were elicited in response to the auditory distractors during encoding and retention of visually presented target sequences. Changing-state distractor sequences that consisted of several different distractor items interfered more with serial recall than steady-state sequences that consisted of repetitions of a single distractor item. The ERP responses that were elicited in response to the distractors comprised the exogenous N1 component and were further characterized by a subsequent positive wave, and a late negativity. The changing-state effect was associated with an increased N1 and a P3a. The results support the attention-capture account of the irrelevant sound effect.

A series of experiments explored habituation and dishabituation to repeated auditory distractors. Participants memorised lists of visually presented items in silence or while ignoring continuously presented auditory distractors. No habituation could be observed, in that the size of the auditory distractor effect did not decrease during the experiment. However, there was evidence for attentional orienting when novel auditory material was presented after a long period of repetitive stimulation, in that a change of distractors was associated with a temporary decrease in recall performance. The results are most consistent with theoretical accounts that claim that the auditory distractor effect is caused primarily by automatic interference, but that still allow attention to play a limited role in the short-term maintenance of information.

Three auditory identification experiments were designed to specify the prime-response retrieval model of negative priming (S. Mayr & A. Buchner, 2006), which assumes that the prime response is retrieved in ignored repetition trials and interferes with probe responding. In Experiment 1, shortly before (in Experiment 1A) or after (in Experiment 1B) the prime, a cue signaled whether participants were to respond (go trials) or not (no-go trials) to the prime. Negative priming was found in either case. A prime-response retrieval effect-an increase in prime response errors to the probe targets of ignored repetition trials-was found for go trials only. In Experiment 2, prime trials with go cues always demanded a response, whereas the response to no-go trials depended on motor discrimination: For left- (right-) hand responses, the response had to be withheld (valid no-go); for right- (left-) hand responses, the response had to be executed (invalid no-go). The prime-response retrieval effect was present only for go and invalid no-go trials. This implies that execution of the prime response is a precondition for prime-response retrieval, whereas a response preparation plan and a response description in task-specific terms are not sufficient.