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Individual differences in dopamine level modulate the ego depletion effect
Stockholm University, Faculty of Social Sciences, Department of Psychology, Biological psychology.
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Number of Authors: 5
2016 (English)In: International Journal of Psychophysiology, ISSN 0167-8760, E-ISSN 1872-7697, Vol. 99, 121-124 p.Article in journal (Refereed) Published
Abstract [en]

Initial exertion of self-control impairs subsequent self-regulatory performance, which is referred to as the ego depletion effect. The current study examined how individual differences in dopamine level, as indexed by eye blink rate (EBR), would moderate ego depletion. An inverted-U-shaped relationship between EBR and subsequent self regulatory performance was found when participants initially engaged in self-control but such relationship was absent in the control condition where there was no initial exertion, suggesting individuals with a medium dopamine level may be protected from the typical ego depletion effect. These findings are consistent with a cognitive explanation which considers ego depletion as a phenomenon similar to switch costs that would be neutralized by factors promoting flexible switching.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 99, 121-124 p.
Keyword [en]
ego depletion, cognitive control, switch costs, dopamine, eye blink rate
National Category
Psychology Neurosciences
Research subject
URN: urn:nbn:se:su:diva-127291DOI: 10.1016/j.ijpsycho.2015.11.013ISI: 000369193800016PubMedID: 26620929OAI: diva2:943592
Available from: 2016-06-28 Created: 2016-03-01 Last updated: 2016-08-05Bibliographically approved

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Xiao, Shanshan
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