Dobbelaar Simone, Kellij Sanne, Veenstra René, Güroğlu Berna
Developmental and Educational Psychology Department, Institute of Psychology, Leiden University, the Netherlands; Leiden Institute for Brain and Cognition, Leiden University, the Netherlands.
Netherlands Organization for Applied Scientific Research (TNO), the Netherlands.
Dev Cogn Neurosci. 2025 Jan;71:101499. doi: 10.1016/j.dcn.2024.101499. Epub 2024 Dec 24.
This preregistered study examined the neural correlates of vicarious reward processing and subsequent trust behavior in relation to experiences of victimization averaged over two years in late childhood. This study used a sample of children with prospective longitudinal data on peer victimization over the past two years (n = 83, 49.4 % girls, M = 10.6 years, n = 62). Participants played an fMRI vicarious reward task in which they could win or lose money for themselves and two other peers. The two other peers were experimentally manipulated to either include or exclude the participant in a Cyberball task prior to the task. Additionally, trust in the two peers was assessed using a one-shot trust game. Results revealed ventral striatum activation when winning (versus losing) for oneself, and activation in the dmPFC, vmPFC and precuneus when playing for excluders rather than for oneself. Victimization predicted decreased ventral striatum activation during personal rewards, and increased activation in the dorsomedial prefrontal cortex when playing for excluders rather than for oneself. Finally, averaged victimization was associated with increased differentiation in trust toward the including and excluding peers. Together, these findings contribute to our understanding of the social cognitions and behaviors of victims of bullying.
这项预先注册的研究考察了童年晚期两年间平均受害经历与替代性奖励处理及后续信任行为的神经关联。本研究使用了一个样本儿童，他们拥有过去两年同伴受害情况的前瞻性纵向数据（n = 83，49.4%为女孩，M = 10.6岁，n = 62）。参与者进行了一项功能磁共振成像（fMRI）替代性奖励任务，在该任务中他们自己以及另外两名同伴可能赢钱或输钱。在任务之前，通过实验操纵另外两名同伴，使其在网络投球任务中要么将参与者纳入，要么将其排除。此外，使用单次信任博弈评估对这两名同伴的信任。结果显示，为自己赢钱（相对于输钱）时腹侧纹状体激活，而为被排除者而非自己玩时背内侧前额叶皮质（dmPFC）、腹内侧前额叶皮质（vmPFC）和楔前叶激活。受害情况预测了在个人奖励期间腹侧纹状体激活减少，以及为被排除者而非自己玩时背内侧前额叶皮质激活增加。最后，平均受害情况与对纳入和排除同伴的信任差异增加有关。总之，这些发现有助于我们理解欺凌受害者的社会认知和行为。
