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Aging and the vulnerability of speech to dual task demands
dc.contributor.author | Kemper, Susan | |
dc.contributor.author | Schmalzried, RaLynn Cheri | |
dc.contributor.author | Hoffman, Lesa | |
dc.contributor.author | Herman, Ruth E. | |
dc.date.accessioned | 2011-12-12T16:47:36Z | |
dc.date.available | 2011-12-12T16:47:36Z | |
dc.date.issued | 2010-12 | |
dc.identifier.citation | Kemper, S., Schmalzried, R., Hoffman, L., & Herman, R. (2010). Aging and the vulnerability of speech to dual task demands. Psychology and Aging, 25, 949-96. PMCID: PMC3050491 http://psycnet.apa.org/doi/10.1037/a0020000 | |
dc.identifier.uri | http://hdl.handle.net/1808/8598 | |
dc.description | This article may not exactly replicate the final version published in the APA journal. It is not the copy of record. | |
dc.description.abstract | Tracking a digital pursuit rotor task was used to measure dual task costs of language production by young and older adults. Tracking performance by both groups was affected by dual task demands: time on target declined and tracking error increased as dual task demands increased from the baseline condition to a moderately demanding dual task condition to a more demanding dual task condition. When dual task demands were moderate, older adults' speech rate declined but their fluency, grammatical complexity, and content were unaffected. When the dual task was more demanding, older adults' speech, like young adults' speech, became highly fragmented, ungrammatical, and incoherent. Vocabulary, working memory, processing speed, and inhibition affected vulnerability to dual task costs: vocabulary provided some protection for sentence length and grammaticality, working memory conferred some protection for grammatical complexity, and processing speed provided some protection for speech rate, propositional density, coherence, and lexical diversity. Further, vocabulary and working memory capacity provided more protection for older adults than for young adults although the protective effect of processing speed was somewhat reduced for older adults as compared to the young adults. (PsycINFO Database Record (c) 2010 APA, all rights reserved) | |
dc.language.iso | en_US | |
dc.publisher | American Psychological Association | |
dc.title | Aging and the vulnerability of speech to dual task demands | |
dc.type | Article | |
kusw.kuauthor | Kemper, Susan | |
kusw.kuauthor | Schmalzried, RaLynn | |
kusw.kuauthor | Herman, Ruth | |
kusw.kudepartment | Department of Psychology | |
kusw.oastatus | fullparticipation | |
dc.identifier.doi | 10.1037/a0020000 | |
kusw.oaversion | Scholarly/refereed, author accepted manuscript | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |
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