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Associations between speech understanding and auditory and visual tests of verbal working memory: effects of linguistic complexity, task, age, and hearing loss
Vet Affairs Medical Centre, TN 37684 USA; E Tennessee State University, TN 37614 USA.
Linköping University, Department of Behavioural Sciences and Learning. Linköping University, The Swedish Institute for Disability Research. Linköping University, Faculty of Arts and Sciences. University of Toronto, Canada; University of Health Network, Canada; Baycrest Hospital, Canada.
2015 (English)In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 6, no 1394Article in journal (Refereed) Published
Abstract [en]

Listeners with hearing loss commonly report having difficulty understanding speech, particularly in noisy environments. Their difficulties could be due to auditory and cognitive processing problems. Performance on speech-in-noise tests has been correlated with reading working memory span (RWMS), a measure often chosen to avoid the effects of hearing loss. If the goal is to assess the cognitive consequences of listeners auditory processing abilities, however, then listening working memory span (LWMS) could be a more informative measure. Some studies have examined the effects of different degrees and types of masking on working memory, but less is known about the demands placed on working memory depending on the linguistic complexity of the target speech or the task used to measure speech understanding in listeners with hearing loss. Compared to RWMS, LWMS measures using different speech targets and maskers may provide a more ecologically valid approach. To examine the contributions of RWMS and LWMS to speech understanding, we administered two working memory measures (a traditional RWMS measure and a new LWMS measure), and a battery of tests varying in the linguistic complexity of the speech materials, the presence of babble masking, and the task. Participants were a group of younger listeners with normal hearing and two groups of older listeners with hearing loss (n = 24 per group). There was a significant group difference and a wider range in performance on LWMS than on RWMS. There was a significant correlation between both working memory measures only for the oldest listeners with hearing loss. Notably, there were only few significant correlations among the working memory and speech understanding measures. These findings suggest that working memory measures reflect individual differences that are distinct from those tapped by these measures of speech understanding.

Place, publisher, year, edition, pages
FRONTIERS MEDIA SA , 2015. Vol. 6, no 1394
Keyword [en]
hearing loss; speech understanding; aging; reading working memory; listening working memory; speech-in-noise
National Category
URN: urn:nbn:se:liu:diva-121893DOI: 10.3389/fpsyg.2015.01394ISI: 000361561900001PubMedID: 26441769OAI: diva2:860768

Funding Agencies|Department of Veterans Affairs (VA), Veterans Health Administration, Office of Research and Development, Rehabilitation Research and Development (RRandD) Service, Washington D.C.; RRandD Auditory Vestibular Research Enhancement Award Program (REAP) [C4339F]

Available from: 2015-10-13 Created: 2015-10-12 Last updated: 2015-11-04

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Pichora-Fuller, Kathleen
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