Final answer:
Co-rumination results in both increased risk for depression related to internalizing negative thoughts, and improved friendship quality due to emotional closeness.
Step-by-step explanation:
The concept of co-rumination indeed refers to the process of extensively discussing and dwelling on problems, negative feelings, and emotionally charged subjects, typically within close relationships. This practice can have dual outcomes. True to the statement, research such as the studies conducted by Abela and Hankin (2011) and Robinson and Alloy (2003) has found that co-rumination is associated with an increased risk for internalizing problems like depression, as it tends to reinforce negative thought patterns. However, it has also been shown to predict positive friendship quality, as this intense sharing can strengthen bonds and increase emotional closeness between friends.