Working memory and intraindividual variability in processing speed: A lifespan developmental and individual-differences study.
Working memory (WM) and intraindividual variability (IIV) in processing speed are both hypothesized to reflect general attentional processes. In the present study, we aimed at exploring the relationship between WM capacity and IIV in reaction times (RTs) and its possible variation with development a...
| Publicado en: | Memory & Cognition Vol. 43; no. 3; pp. 340 - 357 |
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| Autores principales: | , , , |
| Formato: | Artículo |
| Publicado: |
Springer Nature
Apr2015
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=102426888&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 102426888 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 0090502X MEG jtl: Memory & Cognition issn: 0090502X maglogo: N pubinfo: dt: Apr2015 vid: 43 iid: 3 pid: 237 pub: Springer Nature artinfo: ui: 102426888 10.3758/s13421-014-0491-1 ppf: 340 ppct: 17 formats: fmt: @attributes: type: P size: 966KB tig: atl: Working memory and intraindividual variability in processing speed: A lifespan developmental and individual-differences study. aug: au: Mella, Nathalie Fagot, Delphine Lecerf, Thierry Ribaupierre, Anik affil: FPSE, University of Geneva, Boulevard du Pont d'Arve CH-1205 Geneva Switzerland Swiss National Centre of Competence in Research LIVES-Overcoming vulnerability: life course perspectives, and Center for Interdisciplinary Gerontology and Vulnerabilities, University of Geneva, Geneva Switzerland su: Switzerland Age distribution Analysis of variance Parameters (Statistics) Task performance Factor analysis Goodness-of-fit tests Mathematical statistics Multivariate analysis Probability theory Reaction time Regression analysis Research funding Short-term memory T-test (Statistics) Structural equation modeling sug: subj: Age distribution Analysis of variance Parameters (Statistics) Task performance Switzerland Factor analysis Goodness-of-fit tests Mathematical statistics Multivariate analysis Probability theory Reaction time Regression analysis Research funding Short-term memory T-test (Statistics) Structural equation modeling keyword: Aging Development Individual differences Intraindividual variability Reaction time analyses/methods Working memory Aging Development Individual differences Intraindividual variability Reaction time analyses/methods Working memory ab: Working memory (WM) and intraindividual variability (IIV) in processing speed are both hypothesized to reflect general attentional processes. In the present study, we aimed at exploring the relationship between WM capacity and IIV in reaction times (RTs) and its possible variation with development across the lifespan. Two WM tasks and six RT tasks of varying complexity were analyzed in a sample of 539 participants, consisting of five age groups: two groups of children (9-10 and 11-12 years of age), one group of young adults, and two groups of older adults (59-69 and 70-89 years of age). Two approaches were adopted. First, low-span and high-span individuals were identified, and analyses of variance were conducted comparing these two groups within each age group and for each RT task. The results consistently showed a span effect in the youngest children and oldest adults: High-span individuals were significantly faster and less variable than low-span individuals. In contrast, in young adults no difference was observed between high- and low-span individuals, whether in terms of their means or IIV. Second, multivariate analyses were conducted on the entire set of tasks, to determine whether IIV in RTs brought different information than the mean RT. The results showed that, although very strongly correlated, the mean and IIV in speed should be kept separate in terms of how they account for individual differences in WM. Overall, our results support the assumption of a link between WM capacity and IIV in RT, more strongly so in childhood and older adulthood. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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