Individual differences in dopamine level modulate the ego depletion effect

Dang, JunhuaLund University,Lunds universitet,Institutionen för psykologi,Samhällsvetenskapliga institutioner och centrumbildningar,Samhällsvetenskapliga fakulteten,Department of Psychology,Departments of Administrative, Economic and Social Sciences,Faculty of Social Sciences (author)

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.

Xiao, ShanshanStockholms universitet,Biologisk psykologi(Swepub:su)sxiao (author)
Liu, Ying (author)
Jiang, Yumeng (author)
Mao, Lihua (author)
Institutionen för psykologiSamhällsvetenskapliga institutioner och centrumbildningar (creator_code:org_t)

In:International Journal of Psychophysiology: Elsevier99, s. 121-1240167-87601872-7697

By the author/editor: Dang, Junhua; Xiao, Shanshan; Liu, Ying; Jiang, Yumeng; Mao, Lihua

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Neurosciences

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