Selective Attrition and Intraindividual Variability in Response Time Moderate Cognitive Change

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dc.contributor.authorYao, C.
dc.contributor.authorStawski, R.S.
dc.contributor.authorHultsch, D.F.
dc.contributor.authorMacDonald, S.W.S.
dc.date.accessioned2021-10-01T21:18:39Z
dc.date.available2021-10-01T21:18:39Z
dc.date.copyright2016en_US
dc.date.issued2016
dc.description.abstractObjectives—Selection of a developmental time metric is useful for understanding causal processes that underlie aging-related cognitive change, and for the identification of potential moderators of cognitive decline. Building on research suggesting that time to attrition is a metric sensitive to non-normative influences of aging (e.g., subclinical health conditions), we examined reason for attrition and intraindividual variability (IIV) in reaction time as predictors of cognitive performance. Method—Three-hundred and four community dwelling older adults (64-92 years) completed annual assessments in a longitudinal study. IIV was calculated from baseline performance on reaction time tasks. Multilevel models were fit to examine patterns and predictors of cognitive change. Results—We show that time to attrition was associated with cognitive decline. Greater IIV was associated with declines on executive functioning and episodic memory measures. Attrition due to personal health reasons was also associated with decreased executive functioning compared to individuals who remained in study. Discussion—These findings suggest that time to attrition is a useful metric for representing cognitive change, and reason for attrition and IIV are predictive of non-normative influences that may underlie instances of cognitive loss in older adults.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis research was supported by grants from the National Institutes of Health/National Institute on Aging (R21AG045575) to Robert Stawski and Stuart MacDonald, from the Natural Sciences and Engineering Research Council of Canada to David Hultsch, Stuart MacDonald, and Robert Stawski, and from the Canadian Institutes of Health Research (CIHR), NSERC, and the Alzheimer's Society of Canada to David F. Hultsch. This work was undertaken as part of a Master's thesis project by Christie Yao, who was supported by master's and doctoral scholarships from CIHR.en_US
dc.identifier.citationYao, C., Stawski, R.S., Hultsch, D.F., & MacDonald, S.W.S. (2016). Selective Attrition and Intraindividual Variability in Response Time Moderate Cognitive Change. Journal of Clinical and Experimental Neuropsychology, 38(2), 227-237. https://doi.org/10.1080/13803395.2015.1102869en_US
dc.identifier.urihttps://doi.org/10.1080/13803395.2015.1102869
dc.identifier.urihttp://hdl.handle.net/1828/13428
dc.language.isoenen_US
dc.publisherJournal of Clinical and Experimental Neuropsychologyen_US
dc.subjectintraindividual variability
dc.subjectcognition
dc.subjectaging
dc.subjectattrition
dc.subjectlongitudinal change
dc.subject.departmentDepartment of Psychology
dc.titleSelective Attrition and Intraindividual Variability in Response Time Moderate Cognitive Changeen_US
dc.typeArticleen_US

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