title: The effects of aging and dual task demands on language production.
abstract: A digital pursuit rotor task was used to measure dual task costs of language production by young and older adults. After training on the pursuit rotor, participants were asked to track the moving target while providing a language sample. When simultaneously engaged, young adults experienced greater dual task costs to tracking, fluency, and grammatical complexity than older adults. Older adults were able to preserve their tracking performance by speaking more slowly. Individual differences in working memory, processing speed, and Stroop interference affected vulnerability to dual task costs. These results demonstrate the utility of using a digital pursuit rotor to study the effects of aging and dual task demands on language production and confirm prior findings that young and older adults use different strategies to accommodate to dual task demands.
authors.affiliation: Gerontology Center, University of Kansas, Lawrence, KS 66045, USA. skemper@ku.edu
authors.forename: Susan
authors.initials: S
authors.lastname: Kemper
authors.forename: Ralynn
authors.initials: R
authors.lastname: Schmalzried
authors.forename: Ruth
authors.initials: R
authors.lastname: Herman
authors.forename: Skye
authors.initials: S
authors.lastname: Leedahl
authors.forename: Deepthi
authors.initials: D
authors.lastname: Mohankumar
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D001288:Attention / Q000502:physiology*; D005260:Female; D006801:Humans; D007206:Individuality; D007802:Language; D008297:Male; D008570:Memory, Short-Term / Q000502:physiology*; D009483:Neuropsychological Tests; D011930:Reaction Time; D014706:Verbal Learning / Q000502:physiology; D055815:Young Adult