The roles of working memory updating and processing speed in mediating age-related differences in fluid intelligence
文献类型：期刊论文
| 作者 | Chen, Tianyong ; Li, Deming
|
| 刊名 | AGING NEUROPSYCHOLOGY AND COGNITION
 |
| 出版日期 | 2007-11-01 |
| 卷号 | 14期号:6页码:631-646 |
| 关键词 | latent variable analysis short-term-memory executive processes capacity cognition |
| ISSN号 | 1382-5585 |
| 文献子类 | Article |
| 英文摘要 | 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.; 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. |
| 学科主题 | 认知心理学 |
| 语种 | 英语 |
| WOS记录号 | WOS:000251464900006 |
| 公开日期 | 2011-08-22 |
| 源URL | [http://ir.psych.ac.cn/handle/311026/5795]  |
| 专题 | 心理研究所_中国科学院心理研究所回溯数据库(1956-2010) |
| 作者单位 | Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：心理研究所
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