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Article: Age-related difference in relationships between cognitive processing speed and general cognitive status

TitleAge-related difference in relationships between cognitive processing speed and general cognitive status
Authors
KeywordsCognitive processing speed
Frontal functions
General cognitive status
Montreal Cognitive Assessment
Verbal fluency
Issue Date2015
PublisherPsychology Press. The Journal's web site is located at http://www.tandfonline.com/toc/hapn21/21/2#.U42cG7ESDGg
Citation
Applied Neuropsychology: Adult, 2015, v. 22 n. 2, p. 94-99 How to Cite?
AbstractGeneral cognitive status (GCS) is a composite of cognitive abilities reflecting full function. The literature suggests a relationship between cognitive processing speed and GCS, as well as age-related changes of processing speed on cognitive performance. Therefore, this study recruited 34 younger and 39 older adults to verify age-related differences in relationships between cognitive processing speed and GCS. We measured cognitive processing speed with the Processing Speed Index of the Wechsler Adult Intelligence Scale. Findings indicated that cognitive processing speed predicted GCS in older but not younger adults. Future research may be needed to verify the training effect of processing speed on GCS. This study also further examined cognitive factors related to processing speed in aging and the relationships between cognitive processing speed and verbal fluency, cognitive inhibition, and divided attention. A stepwise regression analysis indicated that only verbal fluency contributed significantly to cognitive processing speed in older adults, accounting for 21% of the variance. These observations suggest that age-related changes of prefrontal regions may not fully explain age-related decline in cognitive processing speed.
Persistent Identifierhttp://hdl.handle.net/10722/198659
ISSN
2020 Impact Factor: 2.248
2020 SCImago Journal Rankings: 0.494
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorTam, HMK-
dc.contributor.authorLam, CLM-
dc.contributor.authorHuang, H-
dc.contributor.authorWang, B-
dc.contributor.authorLee, TMC-
dc.date.accessioned2014-07-07T08:35:06Z-
dc.date.available2014-07-07T08:35:06Z-
dc.date.issued2015-
dc.identifier.citationApplied Neuropsychology: Adult, 2015, v. 22 n. 2, p. 94-99-
dc.identifier.issn2327-9095-
dc.identifier.urihttp://hdl.handle.net/10722/198659-
dc.description.abstractGeneral cognitive status (GCS) is a composite of cognitive abilities reflecting full function. The literature suggests a relationship between cognitive processing speed and GCS, as well as age-related changes of processing speed on cognitive performance. Therefore, this study recruited 34 younger and 39 older adults to verify age-related differences in relationships between cognitive processing speed and GCS. We measured cognitive processing speed with the Processing Speed Index of the Wechsler Adult Intelligence Scale. Findings indicated that cognitive processing speed predicted GCS in older but not younger adults. Future research may be needed to verify the training effect of processing speed on GCS. This study also further examined cognitive factors related to processing speed in aging and the relationships between cognitive processing speed and verbal fluency, cognitive inhibition, and divided attention. A stepwise regression analysis indicated that only verbal fluency contributed significantly to cognitive processing speed in older adults, accounting for 21% of the variance. These observations suggest that age-related changes of prefrontal regions may not fully explain age-related decline in cognitive processing speed.-
dc.languageeng-
dc.publisherPsychology Press. The Journal's web site is located at http://www.tandfonline.com/toc/hapn21/21/2#.U42cG7ESDGg-
dc.relation.ispartofApplied Neuropsychology: Adult-
dc.subjectCognitive processing speed-
dc.subjectFrontal functions-
dc.subjectGeneral cognitive status-
dc.subjectMontreal Cognitive Assessment-
dc.subjectVerbal fluency-
dc.titleAge-related difference in relationships between cognitive processing speed and general cognitive status-
dc.typeArticle-
dc.identifier.emailTam, HMK: helenama@hku.hk-
dc.identifier.emailLam, CLM: lamlmc@hku.hk-
dc.identifier.emailLee, TMC: tmclee@hku.hk-
dc.identifier.authorityLam, CLM=rp02784-
dc.identifier.authorityLee, TMC=rp00564-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1080/23279095.2013.860602-
dc.identifier.pmid24927241-
dc.identifier.scopuseid_2-s2.0-84924995087-
dc.identifier.hkuros229821-
dc.identifier.volume22-
dc.identifier.issue2-
dc.identifier.spage94-
dc.identifier.epage99-
dc.identifier.eissn2327-9109-
dc.identifier.isiWOS:000350379400003-
dc.publisher.placeUnited States-
dc.identifier.issnl2327-9095-

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