Does mindfulness mediate the association between attachment dimensions and Borderline Personality Disorder features? A study of Italian non-clinical adolescents

The aim of this study was to assess whether mindfulness mediates the association between attachment dimensions and features of Borderline Personality Disorder (BPD) in a sample of 501 Italian high-school students. Low scores on Confidence and high scores on Need for Approval and Preoccupation with Relationships attachment scales was significantly related to the number of BPD features (adjusted R(2) = .2, p < .001). Further, mindfulness scores were negatively associated with Need for Approval and Relationships as Secondary attachment scales (adjusted R(2) = .14, p < .001). Finally, mindfulness scores were negatively associated with the number of BPD features (adjusted R(2) = .15, p < .001). Mediation analyses showed that the relationship between Need for Approval and BPD was completely mediated by the mindfulness effects. Our results in non-clinical adolescents are consistent with Bateman and Fonagy's (2004) hypothesis that the link between attachment disturbances and BPD features may be mediated by deficits in mentalization, at least as these are operationalized by low mindfulness.