Speed Brittany C, Nelson Brady D, Levinson Amanda R, Perlman Greg, Klein Daniel N, Kotov Roman, Hajcak Greg
Stony Brook University, Department of Psychology, Stony Brook, NY, USA.
Stony Brook University, Department of Psychology, Stony Brook, NY, USA.
Biol Psychol. 2018 Jul;136:111-118. doi: 10.1016/j.biopsycho.2018.05.017. Epub 2018 May 25.
Affective personality traits, such as extraversion and neuroticism, are associated with individual differences in reward system functioning. The reward positivity (ΔRewP) is an event-related potential (ERP) component that indexes sensitivity to reward, and can be elicited by feedback indicating monetary gains relative to losses. In a sample of 508 adolescent girls, the current study examined the relationship between extraversion, neuroticism, and their respective facets and the ΔRewP. Results indicated an Extraversion × Neuroticism interaction, such that greater extraversion was associated with an increased ΔRewP, but only in the context of low neuroticism. This association was primarily due to the extraversion facet positive emotionality-high levels of positive emotionality were associated with an increased ΔRewP, but only in the context of low neuroticism. In addition, increased neuroticism diminished the age-related increase in the ΔRewP. The current study suggests that both extraversion and neuroticism are associated with reward system function in adolescence.
外向性和神经质等情感性人格特质与奖励系统功能的个体差异有关。奖励正性（ΔRewP）是一种事件相关电位（ERP）成分，可索引对奖励的敏感性，并且可以由表明相对于损失的金钱收益的反馈引发。在一个508名青春期女孩的样本中，本研究考察了外向性、神经质及其各自的方面与ΔRewP之间的关系。结果表明存在外向性×神经质的交互作用，即较高的外向性与增加的ΔRewP相关，但仅在低神经质的情况下如此。这种关联主要归因于外向性方面的积极情绪——高水平的积极情绪与增加的ΔRewP相关，但同样仅在低神经质的情况下如此。此外，神经质的增加减弱了ΔRewP与年龄相关的增加。本研究表明，外向性和神经质都与青少年的奖励系统功能有关。
