Postcategorical auditory distraction in short-term memory: Insights from increased task load and task type.
Copyright policy )Postcategorical auditory distraction in short-term memory: Insights from increased task load and task type.
Task-irrelevant speech impairs short-term serial recall appreciably. On the interference-by-process account, the processing of physical (i.e., precategorical) changes in speech yields order cues that conflict with the serial-ordering process deployed to perform the serial recall task. In this view, the postcategorical properties (e.g., phonology, meaning) of speech play no role. The present study reassessed the implications of recent demonstrations of auditory postcategorical distraction in serial recall that have been taken as support for an alternative, attentional-diversion, account of the irrelevant speech effect. Focusing on the disruptive effect of emotionally valent compared with neutral words on serial recall, we show that the distracter-valence effect is eliminated under conditions-high task-encoding load-thought to shield against attentional diversion whereas the general effect of speech (neutral words compared with quiet) remains unaffected (Experiment 1). Furthermore, the distracter-valence effect generalizes to a task that does not require the processing of serial order-the missing-item task-whereas the effect of speech per se is attenuated in this task (Experiment 2). We conclude that postcategorical auditory distraction phenomena in serial short-term memory (STM) are incidental: they are observable in such a setting but, unlike the acoustically driven irrelevant speech effect, are not integral to it. As such, the findings support a duplex-mechanism account over a unitary view of auditory distraction. (PsycINFO Database Record
- University of Salford United Kingdom
- Université Laval Canada
- University of Gaevle Sweden
- Royal Holloway University of London United Kingdom
- Cardiff Metropolitan University (Prifysgol Metropolitan Caerdydd) United Kingdom
Adult, Male, Adolescent, Emotions, Irrelevant speech, 150, Auditory distraction, C853, Random Allocation, Young Adult, Emotional valence, Humans, Attention, Psychological Tests, Middle Aged, C800, Memory, Short-Term, Serial recall, Mental Recall, Auditory Perception, Female, Serial short-term memory
Adult, Male, Adolescent, Emotions, Irrelevant speech, 150, Auditory distraction, C853, Random Allocation, Young Adult, Emotional valence, Humans, Attention, Psychological Tests, Middle Aged, C800, Memory, Short-Term, Serial recall, Mental Recall, Auditory Perception, Female, Serial short-term memory
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