Individual differences in cognitive control: The role of psychoticism and working memory in set-shifting
Smillie, Luke D., Cooper, Andrew J., Tharp, Ian J. and Pelling, Emma L. (2009) Individual differences in cognitive control: The role of psychoticism and working memory in set-shifting. British Journal of Psychology, 100 (4). pp. 629-643. ISSN 0007-1269 (Print), 2044-8295 (Online) (doi:10.1348/000712608X382094)Full text not available from this repository.
Set-shifting refers to a process of cognitive control which is shown through flexible behavioural adaptation to changes in task parameters or demands, such as the switching of an explicit rule (extra-dimensional rule shifting) or the reversal of a reinforcement-contingency (reversal-learning). Set-shifting deficits are widely documented in specific neuropsychological disorders, but seldom investigated in relation to normally-occurring individual differences. In a sample of healthy adults (N=78, 28% male), we demonstrate that Working Memory and trait Psychoticism have independent involvement in extra-dimensional rule shifting as measured using an analogue of the Wisconsin Card Sorting Test. Only Psychoticism, however, was involved in reversal-learning, as assessed using a recent modification of the Iowa Gambling Task. Individual differences in extra-dimensional rule shifting were explained in terms of rule abstraction speed, while individual differences in reversal-learning were explained in terms of response perseveration. These results clarify component processes in different forms of set-shifting, and highlight the role of individual differences, especially personality, in cognitive control.
|Additional Information:|| Article first published online: 24 DEC 2010. Issue published online: 24 DEC 2010. Published in British Journal of Psychology, Volume 100, Issue 4, November 2009.|
|Uncontrolled Keywords:||psychoticism, set-shifting, cognitive control, working memory|
|Subjects:||B Philosophy. Psychology. Religion > BF Psychology|
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
|School / Department / Research Groups:||School of Health & Social Care|
School of Health & Social Care > Department of Psychology & Counselling
|Last Modified:||14 Aug 2013 15:35|
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