{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T09:05:28Z","timestamp":1789376728612,"version":"build-2803163510"},"reference-count":56,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T00:00:00Z","timestamp":1789344000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Hainan Provincial Education Science Planning Key Project","award":["QJZ202412011"],"award-info":[{"award-number":["QJZ202412011"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Behav. Sci.","Behavioral Sciences"],"abstract":"<jats:p>Non-suicidal self-injury (NSSI) is a highly prevalent maladaptive psychological behavior among adolescents and a significant public health concern. Drawing upon ecological systems theory, this cross-sectional study of 4128 adolescents (M = 12.78, SD = 0.96; 51.6% male) aimed to investigate the underlying mechanisms and protective roles of peer victimization, sleep quality, parent\u2013child cohesion, and teacher emotional support in relation to NSSI. Hierarchical regression analyses and PROCESS macro were used to test the proposed mediating and moderating effects. Peer victimization was significantly correlated with NSSI, and this relationship was mediated by sleep quality. In separate models, the interaction terms of peer victimization \u00d7 parent\u2013child cohesion, sleep quality \u00d7 parent\u2013child cohesion, and sleep quality \u00d7 teacher emotional support were each significantly associated with NSSI. However, when both moderators were examined simultaneously, only teacher emotional support remained a significant moderator of the sleep quality\u2013NSSI pathway. These findings highlight the complex pathways linking peer victimization to NSSI, clarify the differentiated moderating roles of family and school support, and provide empirical support for ecological systems theory and school-based interventions.<\/jats:p>","DOI":"10.3390\/bs16091637","type":"journal-article","created":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T08:10:23Z","timestamp":1789373423000},"page":"1637","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Peer Victimization and Non-Suicidal Self-Injury Among Chinese Adolescents: Moderating Roles of Teacher Emotional Support and Parent\u2013Child Cohesion"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-5252-0817","authenticated-orcid":false,"given":"Ning","family":"Liu","sequence":"first","affiliation":[{"name":"School of Psychology, Hainan Normal University, Haikou 571158, China"},{"name":"Hainan Provincial Research Base for Psychological Development and Education of Adolescents, Haikou 571158, China"},{"name":"Key Laboratory of Data Science and Smart Education, Ministry of Education, Hainan Normal University, Haikou 571127, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"software","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"},{"role":"visualization","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"}]},{"given":"Anyan","family":"Li","sequence":"additional","affiliation":[{"name":"School of Psychology, Hainan Normal University, Haikou 571158, China"},{"name":"Hainan Provincial Research Base for Psychological Development and Education of Adolescents, Haikou 571158, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"software","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"}]},{"given":"Qingxiu","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Psychology, Hainan Normal University, Haikou 571158, China"},{"name":"Hainan Provincial Research Base for Psychological Development and Education of Adolescents, Haikou 571158, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Mengge","family":"Yue","sequence":"additional","affiliation":[{"name":"School of Psychology, Hainan Normal University, Haikou 571158, China"},{"name":"Hainan Provincial Research Base for Psychological Development and Education of Adolescents, Haikou 571158, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"writing-review-editing","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"319","DOI":"10.1177\/0022427801038004001","article-title":"Building on the foundation of general strain theory: Specifying the types of strain most likely to lead to crime and delinquency","volume":"38","author":"Agnew","year":"2001","journal-title":"Journal of Research in Crime and Delinquency"},{"key":"ref_2","unstructured":"Asher, S. 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