Journal article
Working memory and aging: a cross-sectional and longitudinal analysis using a self-ordered pointing task
Journal of the International Neuropsychological Society, Vol.10(4), pp.489-503
07/2004
Handle:
https://hdl.handle.net/2376/113935
PMID: 15327728
Abstract
Age-related declines in working memory performance have been associated with deficits in inhibition, strategy use, processing speed, and monitoring. In the current study, cross-sectional and longitudinal methodologies were used to investigate the relative contribution of these components to age-related changes in working memory. In Experiment 1, a sample of 140 younger and 140 older adults completed an abstract design version of the Self-Ordered Pointing Task modeled after Shimamura and Jurica (1994). Experiment 1 revealed that only processing speed and monitoring explained age differences in SOPT performance. Participants in Experiment 2 were 53 older adults who returned 4 years after the initial testing and 53 young adults. A task that assessed the ability to generate and monitor an internal series of responses as compared to an externally imposed series of responses was also administered. Experiment 2 replicated the key findings from Experiment 1 and provided some further evidence for age-related internal monitoring difficulties. Furthermore, the exploratory longitudinal analysis revealed that older age and lower intellectual abilities tended to be associated with poorer performance on the SOPT at Time 2.
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Details
- Title
- Working memory and aging: a cross-sectional and longitudinal analysis using a self-ordered pointing task
- Creators
- Naomi Chaytor - Department of Psychology, Washington State University, Pullman 99164-4820, USAMaureen Schmitter-Edgecombe
- Publication Details
- Journal of the International Neuropsychological Society, Vol.10(4), pp.489-503
- Academic Unit
- Medical Education and Clinical Science, Department of; Psychology, Department of
- Publisher
- England
- Identifiers
- 99900548484501842
- Language
- English
- Resource Type
- Journal article