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- Title
Role of serial order in the impact of talker variability on short-term memory: testing a perceptual organization-based account.
- Authors
Hughes, Robert; Marsh, John; Jones, Dylan
- Abstract
In two experiments, we examined the impact of the degree of match between sequential auditory perceptual organization processes and the demands of a short-term memory task (memory for order vs. item information). When a spoken sequence of digits was presented so as to promote its perceptual partitioning into two distinct streams by conveying it in alternating female (F) and male (M) voices (FMFMFMFM)-thereby disturbing the perception of true temporal order-recall of item order was greatly impaired (as compared to recall of item identity). Moreover, an order error type consistent with the formation of voice-based streams was committed more quickly in the alternating-voice condition (Exp. 1). In contrast, when the perceptual organization of the sequence mapped well onto an optimal two-group serial rehearsal strategy-by presenting the two voices in discrete clusters (FFFFMMMM)-order, but not item, recall was enhanced (Exp. 2). The results are consistent with the view that the degree of compatibility between perceptual and deliberate sequencing processes is a key determinant of serial short-term memory performance. Alternative accounts of talker variability effects in short-term memory, based on the concept of a dedicated phonological short-term store and a capacity-limited focus of attention, are also reviewed.
- Subjects
UNITED Kingdom; ANALYSIS of variance; AUDITORY perception; RESEARCH funding; SHORT-term memory; SPEECH perception; HUMAN voice; REPEATED measures design; DESCRIPTIVE statistics
- Publication
Memory & Cognition, 2011, Vol 39, Issue 8, p1435
- ISSN
0090-502X
- Publication type
Article
- DOI
10.3758/s13421-011-0116-x