Caffeine enhances working memory for extraverts

Smillie, Luke D. and Gökçen, Elif. 2010. Caffeine enhances working memory for extraverts. Biological Psychology, 85(3), pp. 496-498. ISSN 03010511 [Article]

No full text available

Abstract or Description

Using a randomized double-blind placebo-controlled design we examined the effects of caffeine on working memory (WM) as a function of extraverted personality. Participants (N = 59) received 200 mg of caffeine and placebo in counterbalanced-order over two sessions prior to completing a ‘N-Back’ WM paradigm. Findings revealed that caffeine administration relative to the placebo condition resulted in heightened WM performance, but only for extraverted participants. We suggest based on previous theory and research that dopamine function (DA) may be the most plausible mechanism underlying this finding.

Item Type:


Identification Number (DOI):

Departments, Centres and Research Units:




Item ID:


Date Deposited:

29 Mar 2011 12:06

Last Modified:

07 Dec 2012 12:56

Peer Reviewed:

Yes, this version has been peer-reviewed.


Edit Record Edit Record (login required)