文献类型：期刊文献

英文题名：Greater tolerance to losses in sensation seeking: Evidence from probability and delay discounting

作者：Zheng, Ya[1];Tian, Moqian[2];Li, Qi[3,4];Liu, Xun[3,4]

第一作者：Zheng, Ya

通讯作者：Liu, X[1]

机构：[1]Dalian Med Univ, Dept Psychol, Dalian, Peoples R China;[2]Beijing Union Univ, Teachers Coll, Dept Psychol, Beijing, Peoples R China;[3]Inst Psychol, CAS Key Lab Behav Sci, Beijing, Peoples R China;[4]Univ Chinese Acad Sci, Dept Psychol, Beijing, Peoples R China

第一机构：Dalian Med Univ, Dept Psychol, Dalian, Peoples R China

通讯机构：[1]corresponding author), Chinese Acad Sci, Inst Psychol, 16 Lincui Rd, Beijing 100101, Peoples R China.

年份：2019

卷号：194

起止页码：159-165

外文期刊名：DRUG AND ALCOHOL DEPENDENCE

收录：;Scopus(收录号：2-s2.0-85056487328);WOS:【SSCI(收录号:WOS:000456356100023)，SCI-EXPANDED(收录号:WOS:000456356100023)】；

基金：This work was funded by the National Natural Science Foundation of China (31500872 and 31271194), and the Fundamental Research Program of Liaoning Higher Education Institutions (LQ2017050). The funding sources had no further role in the conduct of this study and the preparation of this article.

语种：英文

外文关键词：Sensation seeking; Valuation; Probability discounting; Delay discounting

摘要：Background: Sensation seeking is a behavioral endophenotype of substance use and is associated with abnormalities in financial reward processing. Previous research suggests that high sensation seekers (HSS) relative to low sensation seekers (LSS) show either an enhanced sensitivity to financial rewards or a reduced sensitivity to financial punishments. However, there are few studies investigating the valuation of financial rewards and punishments as a function of delivery probability and delay, two important aspects of reward processing that influence the valuation. Methods: We administrated a probability discounting task and a delay discounting task to 56 HSS and 57 LSS selected from a large sample. Each task was crossed with two factors: valence (gain vs. loss) and amount (Y1000 vs. Y50000). Results: For the probability discounting task, HSS discounted probabilistic losses but not gains more steeply than LSS, irrespective of the amount of outcome. For the delay discounting task, HSS discounted delayed losses more steeply than LSS, for the large but not small amount condition. In contrast, both groups exhibited comparable discounting rates for gains across the two amount conditions. These results remained significant when impulsivity levels were controlled for. Conclusions: Together, our data strengthen the argument that the dysfunctional valuation in sensation seeking is valence specific, which may be driven by a weaker avoidance system, rather than by a stronger approach system.