Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age

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dc.contributor.authorGarrett, D.
dc.contributor.authorMacDonald, Stuart W.S.
dc.contributor.authorCraik, Fergus I.M.
dc.date.accessioned2021-10-01T21:30:12Z
dc.date.available2021-10-01T21:30:12Z
dc.date.copyright2012en_US
dc.date.issued2012
dc.description.abstractIntraindividual variability (IIV) in trial-to-trial reaction time (RT) is a robust and stable within-person marker of aging. However, it remains unknown whether IIV can be modulated experimentally. In a sample of healthy younger and older adults, we examined the effects of motivation- and performance-based feedback, age, and education level on IIV in a choice RT task (four blocks over 15 min). We found that IIV was reduced with block-by-block feedback, particularly for highly educated older adults. Notably, the baseline difference in IIV levels between this group and the young adults was reduced by 50% by the final testing block, this advantaged older group had improved such that they were statistically indistinguishable from young adults on two of three preceding testing blocks. Our findings confirmed that response IIV is indeed modifiable, within mere minutes of feedback and testing.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipAt various stages of this work, Douglas D. Garrett was supported by an IODE War Memorial Award, a doctoral Canada Graduate Scholarship from the Natural Sciences and Engineering Research Council of Canada, the Sir James Lougheed Award of Distinction from Alberta Scholarship Programs, the Naomi Grigg Fellowship for Postgraduate Studies in Gerontology from Soroptimist International of Toronto, and the Men’s Service Group Graduate Student Fellowship from the Rotman Research Institute, Baycrest. Stuart W. S. MacDonald is supported by a Career Investigator Scholar Award from the Michael Smith Foundation for Health Research. This study was also supported by a grant from the Natural Sciences and Engineering Research Council of Canada to Fergus I. M. Craik.en_US
dc.identifier.citationGarrett, D., MacDonald, S.W.S., & Craik, F.I.M. (2012). Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age. Frontiers in Human Neuroscience, 6(101). https://doi.org/10.3389/fnhum.2012.00101en_US
dc.identifier.urihttps://doi.org/10.3389/fnhum.2012.00101
dc.identifier.urihttp://hdl.handle.net/1828/13430
dc.language.isoenen_US
dc.publisherFrontiers in Human Neuroscienceen_US
dc.subjectagingen_US
dc.subjectreaction timeen_US
dc.subjectperformance variabilityen_US
dc.subjectfeedbacken_US
dc.subjectcognitive reserveen_US
dc.subjectintraindividual variabilityen_US
dc.titleIntraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with ageen_US
dc.typeArticleen_US

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