Wang Quanquan, Liu Xia
Institute of Developmental Psychology, Faculty of Psychology, Beijing Normal University, Beijing, People's Republic of China.
Psychol Res Behav Manag. 2019 Aug 13;12:661-673. doi: 10.2147/PRBM.S215246. eCollection 2019.
Non-suicidal self-injury (NSSI) has become a worldwide health concern, especially for the disadvantaged group such as Chinese rural-to-urban migrant children. Peer victimization is a risk factor for NSSI and is quite common among Chinese migrant children. However, few studies that focused on this group have paid attention to the relationship between peer victimization and NSSI. The current study addressed this gap in the literature by examining the mediating role of depressive symptoms and the moderating role of stressful life events in the relationship between peer victimization and NSSI in male and female migrant children.
A total of 650 migrant children completed self-report surveys that addressed peer victimization, NSSI, depressive symptoms, and stressful life events.
Results showed that peer victimization was significantly related to NSSI for both migrant girls and boys. Depressive symptoms mediated the relationship between peer victimization and NSSI among girls, but not among boys. Additionally, stressful life events significantly moderated the relationships between depressive symptoms and NSSI and between peer victimization and NSSI among girls; higher levels of depressive symptoms or peer victimization coupled with more stressful life events related to a higher probability of NSSI. For boys, stressful life events moderated the relationship between peer victimization and NSSI; higher levels of peer victimization combined with increased NSSI behaviors among the boys who reported more stressful life events.
These findings contribute to the understanding of the mechanisms that inform the relationship between peer victimization and NSSI. Moreover, they indicate that future interventions can be enhanced by targeting depressive symptoms among girls and stressful life events among both girls and boys.
非自杀性自伤行为（NSSI）已成为一个全球性的健康问题，对于中国农村到城市的流动儿童等弱势群体而言尤为如此。同伴侵害是NSSI的一个风险因素，在中国流动儿童中相当普遍。然而，很少有针对这一群体的研究关注同伴侵害与NSSI之间的关系。本研究通过考察抑郁症状的中介作用以及应激性生活事件在流动儿童同伴侵害与NSSI关系中的调节作用，填补了这一文献空白。
共有650名流动儿童完成了关于同伴侵害、NSSI、抑郁症状和应激性生活事件的自我报告调查。
结果显示，同伴侵害与流动女童和男童的NSSI均显著相关。抑郁症状在女童的同伴侵害与NSSI关系中起中介作用，但在男童中并非如此。此外，应激性生活事件在女童的抑郁症状与NSSI以及同伴侵害与NSSI之间的关系中起显著调节作用；抑郁症状或同伴侵害程度越高，再加上更多的应激性生活事件，与NSSI发生的可能性越高相关。对于男童，应激性生活事件调节了同伴侵害与NSSI之间的关系；在报告有更多应激性生活事件的男童中，同伴侵害程度越高，NSSI行为增加。
这些发现有助于理解同伴侵害与NSSI之间关系的作用机制。此外，它们表明未来的干预措施可以通过针对女童的抑郁症状以及女童和男童的应激性生活事件来加强。
