Individual Differences in Delay Discounting Relation to Intelligence, Working Memory, and Anterior Prefrontal Cortex

被引：341

作者：

Shamosh, Noah A. ^{[1
]}

DeYoung, Colin G. ^{[2
]}

Green, Adam E. ^{[1
]}

Reis, Deidre L. ^{[1
]}

Johnson, Matthew R. ^{[3
]}

Conway, Andrew R. A. ^{[4
]}

Engle, Randall W. ^{[5
]}

Braver, Todd S. ^{[6
]}

Gray, Jeremy R. ^{[1
,3
]}

机构：

[1] Yale Univ, Dept Psychol, New Haven, CT 06520 USA

[2] Univ Minnesota, Dept Psychol, Minneapolis, MN 55455 USA

[3] Yale Univ, Interdepartmental Neurosci Program, New Haven, CT 06520 USA

[4] Princeton Univ, Dept Psychol, Princeton, NJ 08544 USA

[5] Georgia Inst Technol, Sch Psychol, Atlanta, GA 30332 USA

[6] Washington Univ, Dept Psychol, St Louis, MO 63130 USA

来源：

PSYCHOLOGICAL SCIENCE | 2008年 / 19卷 / 09期

关键词：

D O I：

10.1111/j.1467-9280.2008.02175.x

中图分类号：

B84 [心理学];

学科分类号：

04 ; 0402 ;

摘要：

Lower delay discounting (better self-control) is linked to higher intelligence, but the basis of this relation is uncertain. To investigate the potential role of working memory (WM) processes, we assessed delay discounting, intelligence (g), WM (span tasks, 3-back task), and WM-related neural activity (using functional magnetic resonance imaging) in 103 healthy adults. Delay discounting was negatively correlated with g and WM. WM explained no variance in delay discounting beyond that explained by g, which suggests that processes through which WM relates to delay discounting are shared by g. WM-related neural activity in left anterior prefrontal cortex (Brodmann's area 10) covaried with g, r = .26, and delay discounting, r = -.40, and partially mediated the relation between g and delay discounting. Overall, the results suggest that delay discounting is associated with intelligence in part because of processes instantiated in anterior prefrontal cortex, a region known to support the integration of diverse information.

引用

页码：904 / 911

页数：8

共 40 条

[1] Working memory and intelligence: The same or different constructs? [J].