Nonsuicidal self-injury (NSSI) is defined as direct, intentional physical injury without suicidal intention. Studies revealed that dysfunctional interpersonal relationships and reward-related decision-making may play crucial roles in this maladaptive behavior, especially in adolescents. These interpersonal decision contexts are characterized by constant updating of expectations of rewards and the actual received rewards as well as the associated emotional reactions. These processes have recently been computationally formalized as prediction errors (PE), specifically reward PEs, valence PEs, and arousal PEs (Heffner et al., 2021; Nat Hum Behav). In the current study, the investigators aim to investigate whether these PEs make discernible contributions to social decisions in the context of unfair experiences among adolescents with NSSI and matched healthy control adolescents (HC). Specifically the investigators hypothesized that: 1) reward and emotional PEs show significant predictions of punishment decisions in both groups, 2) however, compared to HC adolescents, the NSSI group will exhibit selective dysfunctions in emotional but not reward PEs leading to punish a norm proposer who provided unfair offers.
Study Type
OBSERVATIONAL
Enrollment
80
Sichuan Provincial Center for Mental Health, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China
Chengdu, Sichuan, China
RECRUITINGReward prediction errors (PEs)
Reward PEs will be calculated by the differences between the experienced (when be offered) reward and predicted (before the offer) reward.
Time frame: About 20 minutes
Valence prediction errors (PEs)
Valence PEs will be calculated by the differences between the experienced emotional valence and predicted emotional valence.
Time frame: About 20 minutes
Arousal prediction errors (PEs)
Arousal PEs will be calculated by the differences between the experienced emotional arousal and predicted emotional arousal.
Time frame: About 20 minutes
The prediction of PEs of punishment decisions
All PEs and groups (NSSI, HC) will be used in a regression model to examined whether there is any alteration in the NSSI group when PEs are predicted to punishment (reject) decisions.
Time frame: About 20 minutes
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