社会排斥对青少年金钱和社会奖赏加工的影响

The Effects of Social Exclusion on the Processing of Money and Social Rewards

目的:考察社会排斥对青少年金钱与社会奖赏加工的影响。方法:选取青少年被试60名,随机分为社会排斥组(N=30)和社会接纳组(N=30),并采用金钱激励延迟任务(MID)和社会激励延迟任务(SID)探讨其对金钱和社会奖赏加工的影响。结果:(1)两组被试均对MID任务反应速度显著快于SID,并且相较于社会接纳组,排斥组对金钱反馈反应显著更快,表明青少年更喜欢金钱奖赏,当处于社会排斥状态时则更是偏好金钱反馈。(2)社会排斥组在惩罚线索条件下反应最快,而社会接纳组在奖励线索条件下反应最快,表明被排斥个体更偏向对惩罚结果的回避,而被接纳个体更偏向于奖励寻求。结论:社会排斥会影响青少年的奖赏加工,该影响不仅作用于奖赏加工的预期阶段,且作用于对奖赏的反馈体验阶段。

Objective: To investigate the effects of social exclusion on money and social reward processing in adolescents. Methods: 60 adolescents were randomly divided into the social exclusion group(N=30) and the social acceptance group(N=30), and the money incentive delayed task(MID) and social incentive delayed task(SID) were adopted to test effects of social exclusion on the processing of money and social reward. Results:(1)Both groups responded faster in MID than SID condition, and compared with the social acceptance group, the exclusion group responded to the monetary reward significantly faster, indicating that teenagers preferred the monetary reward and they preferred money much more when they felt social exclusion.(2)The social exclusion group showed the fastest response in the punishment cue trials, while the social acceptance group showed the fastest response in the reward cue trials, indicating that the rejected individuals were more inclined to avoid punishment results, while the accepted individuals were more inclined to seek rewards. Conclusion: Social exclusion affects reward processing in adolescents, not only in the expected stage of reward processing, but also in the stage of feedback experience.