Although previous work has consistently identified positive associations between co-rumination and rumination during adolescence, little to no research has examined how this relationship operates on the person-specific level. The current study aimed to extend current developmental theories of co-rumination and rumination by examining within-person associations between these constructs. Survey data was collected from 1502 adolescents (M_age = 13.20; 52% girls; 52% non-Hispanic White) every six-months across the span of 3.5 years. The results showed that at time-points when adolescents reported co-ruminating more than their usual level, they reported concurrent increases in rumination. This association was stronger for boys and strengthened over time. Despite substantial between-person heterogeneity, 97% of adolescents showed positive associations between co-rumination and rumination. This research has important implications for mental health professionals, school systems, and parents who may look to teach adolescents about effective emotion-regulation.

尽管以前的工作一直在确定青春期共同反刍和反刍之间的积极关联，但几乎没有研究检查过这种关系如何在个人特定水平上发挥作用。目前的研究旨在通过检查这些结构之间的个人内部关联来扩展当前的共同反刍和反刍的发展理论。调查数据来自 1502 名青少年（M_年龄 = 13.20; 52% 的女孩；52% 非西班牙裔白人）在 3.5 年中每六个月一次。结果表明，在青少年报告共同反刍的时间点超过他们通常的水平时，他们报告的反刍同时增加。这种关联对男孩来说更强烈，并且随着时间的推移而加强。尽管人与人之间存在显着的异质性，但 97% 的青少年表现出共同反刍和反刍之间的正相关。这项研究对可能希望向青少年教授有效情绪调节的心理健康专业人员、学校系统和父母具有重要意义。