Reflective Function and Borderline Traits in Adolescents.

Despite the developmental roots of the relation between attachment-based reflective function (RF) and borderline pathology, there is a lack of empirical studies examining this link in youth. We examined this link taking into account potential relations between RF and internalizing and externalizing pathology. A total of 421 clinical adolescents between the ages of 12 and 17 completed the Child Attachment Interview (CAI; Shmueli-Goetz, Target, Fonagy, & Datta, 2008), which was coded using the Child and Adolescent Reflective Functioning Scale (CARFS; Ensink, Target, & Oandasan, 2013), alongside a self-report measure of borderline pathology and parent-reported measures of internalizing and externalizing pathology. Exploratory analyses revealed no direct relation between RF and borderline features or internalizing psychopathology but a negative relation with externalizing pathology. Moderation analyses showed that externalizing pathology moderated the relation between RF and borderline pathology. Implications for understanding the various ways in which impaired RF may present in adolescents with BPD are discussed.