PSYCH OpenIR  > 中国科学院心理研究所回溯数据库(1956-2010)
The roles of working memory updating and processing speed in mediating age-related differences in fluid intelligence
Chen, Tianyong; Li, Deming
2007-11-01
Source PublicationAGING NEUROPSYCHOLOGY AND COGNITION
ISSN1382-5585
SubtypeArticle
Volume14Issue:6Pages:631-646
AbstractThis study was conducted to investigate the relative roles of working memory updating (updating) and processing speed in mediating age-related differences in fluid intelligence. A sample of 142 normal adults between 18 and 85 years of age performed a set of updating, processing speed, and fluid intelligence tasks. Hierarchical regression analyses indicated that the proportion of unique age-related variance in updating measures was related to the complexity of speed measures. There was a larger proportion of unique age-related variance in updating measures after controlling for the variance in simpler speed measures. Moreover, structural equation modeling showed that updating mediated almost all the age-related effects on fluid intelligence. These results suggest that updating, but not speed, is the critical mediator between age and fluid intelligence. In addition, the speed mediation of age-related differences in fluid intelligence as indicated by previous studies is at least partially derived from the executive component of speed measures.; This study was conducted to investigate the relative roles of working memory updating (updating) and processing speed in mediating age-related differences in fluid intelligence. A sample of 142 normal adults between 18 and 85 years of age performed a set of updating, processing speed, and fluid intelligence tasks. Hierarchical regression analyses indicated that the proportion of unique age-related variance in updating measures was related to the complexity of speed measures. There was a larger proportion of unique age-related variance in updating measures after controlling for the variance in simpler speed measures. Moreover, structural equation modeling showed that updating mediated almost all the age-related effects on fluid intelligence. These results suggest that updating, but not speed, is the critical mediator between age and fluid intelligence. In addition, the speed mediation of age-related differences in fluid intelligence as indicated by previous studies is at least partially derived from the executive component of speed measures.
Keywordlatent variable analysis short-term-memory executive processes capacity cognition
Subject Area认知心理学
Indexed BySSCI
Language英语
WOS IDWOS:000251464900006
Citation statistics
Cited Times:38[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/5795
Collection中国科学院心理研究所回溯数据库(1956-2010)
AffiliationChinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Chen, Tianyong,Li, Deming. The roles of working memory updating and processing speed in mediating age-related differences in fluid intelligence[J]. AGING NEUROPSYCHOLOGY AND COGNITION,2007,14(6):631-646.
APA Chen, Tianyong,&Li, Deming.(2007).The roles of working memory updating and processing speed in mediating age-related differences in fluid intelligence.AGING NEUROPSYCHOLOGY AND COGNITION,14(6),631-646.
MLA Chen, Tianyong,et al."The roles of working memory updating and processing speed in mediating age-related differences in fluid intelligence".AGING NEUROPSYCHOLOGY AND COGNITION 14.6(2007):631-646.
Files in This Item:
File Name/Size DocType Version Access License
Chen-2007-The roles (203KB) 限制开放--View Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, Tianyong]'s Articles
[Li, Deming]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, Tianyong]'s Articles
[Li, Deming]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, Tianyong]'s Articles
[Li, Deming]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Chen-2007-The roles of working.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.