More benefits than costs: Associations of co-rumination with positive friendship quality and depressive symptoms at the within-person level.

= 510) who reported on their co-rumination and relationship quality of their closest friendship, as well as their depressive symptoms. Results revealed that adolescents who generally experienced more co-rumination also experienced more depressive symptoms and more positive friendship quality (between-person results). At the within-person level, however, co-rumination was only concurrently associated with friendship quality and not with depressive symptoms, and no predictive effects were found. This suggests that the theorized costs and benefits of co-rumination only take place at the between-person level and may not reflect intraindividual processes. As such, co-rumination may provide more benefits than costs. (PsycInfo Database Record (c) 2025 APA, all rights reserved).