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Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age
Intraindividual 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 performanc...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3340942/ https://www.ncbi.nlm.nih.gov/pubmed/22557954 http://dx.doi.org/10.3389/fnhum.2012.00101 |
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author | Garrett, Douglas D. MacDonald, Stuart W. S. Craik, Fergus I. M. |
author_facet | Garrett, Douglas D. MacDonald, Stuart W. S. Craik, Fergus I. M. |
author_sort | Garrett, Douglas D. |
collection | PubMed |
description | Intraindividual 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. |
format | Online Article Text |
id | pubmed-3340942 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-33409422012-05-03 Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age Garrett, Douglas D. MacDonald, Stuart W. S. Craik, Fergus I. M. Front Hum Neurosci Neuroscience Intraindividual 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. Frontiers Media S.A. 2012-05-01 /pmc/articles/PMC3340942/ /pubmed/22557954 http://dx.doi.org/10.3389/fnhum.2012.00101 Text en Copyright © 2012 Garrett, MacDonald and Craik. http://www.frontiersin.org/licenseagreement This is an open-access article distributed under the terms of the Creative Commons Attribution Non Commercial License, which permits non-commercial use, distribution, and reproduction in other forums, provided the original authors and source are credited. |
spellingShingle | Neuroscience Garrett, Douglas D. MacDonald, Stuart W. S. Craik, Fergus I. M. Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age |
title | Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age |
title_full | Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age |
title_fullStr | Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age |
title_full_unstemmed | Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age |
title_short | Intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age |
title_sort | intraindividual reaction time variability is malleable: feedback- and education-related reductions in variability with age |
topic | Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3340942/ https://www.ncbi.nlm.nih.gov/pubmed/22557954 http://dx.doi.org/10.3389/fnhum.2012.00101 |
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