{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T11:39:33Z","timestamp":1784201973478,"version":"3.55.0"},"reference-count":54,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T00:00:00Z","timestamp":1757548800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Psychol."],"abstract":"<jats:sec><jats:title>Introduction<\/jats:title><jats:p>Co-rumination, the excessive discussion of negative events with peers, exhibits a trade-off effect: it enhances friendship quality while simultaneously increasing the risk of internalizing problems in adolescents. Previous research has demonstrated group differences in this trade-off effect. Building on prior findings, this study explores the relationship between the Big Five personality traits and co-rumination among Chinese adolescents through three analytical components, aiming to identify at-risk groups for co-rumination using personality traits.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This cross-sectional study collected 765 valid self-reported responses. Measurement invariance of the Chinese version of the co-rumination questionnaire was examined, and latent variable structural equation models were constructed for each of the three research objectives to investigate the relationship between the Big Five traits and co-rumination.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>First, measurement invariance of the co-rumination questionnaire was assessed, revealing scalar invariance across gender and partial scalar invariance across age groups. Subsequent analyses examined the relationship between the Big Five traits and co-rumination. The first part showed that extraversion, neuroticism, and openness positively predicted co-rumination, while neuroticism explained gender differences in co-rumination. The second part confirmed the moderated trade-off effect of co-rumination; after controlling for the Big Five traits, the risk pathway of co-rumination became more robust, with gender differences observed in this pathway. The third part revealed distinct moderating effects of neuroticism, agreeableness, extraversion, and conscientiousness on the risk pathway.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>Given the measurement invariance results, the Chinese co-rumination questionnaire should be used more cautiously in studies involving multiple age groups. Structural equation modeling indicated that neuroticism serves as a strong indicator for identifying at-risk groups, as individuals with high neuroticism are more susceptible to risks associated with co-rumination. High conscientiousness and agreeableness were found to buffer against co-rumination-related depression and anxiety, respectively. The roles of openness and extraversion in relation to co-rumination appear more complex. Further research is needed to validate these findings.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fpsyg.2025.1603507","type":"journal-article","created":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T05:25:57Z","timestamp":1757568357000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["The association of Big-Five personality with co-rumination and its trade-off effect in Chinese adolescents: a cross-sectional study"],"prefix":"10.3389","volume":"16","author":[{"given":"Zilong","family":"Luo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pinchao","family":"Luo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2025,9,11]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"90","DOI":"10.1002\/per.811","article-title":"Persoc: a unified framework for understanding the dynamic interplay of personality and social relationships","volume":"25","author":"Back","year":"2011","journal-title":"Eur. 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