Increasing evidence suggests that individuals with Borderline Personality Disorder (BPD) might feel rejected even when socially included by others. A psychological mechanism accounting for this response bias could be that, objective social inclusion violates BPD patients’ underlying implicit needs of “extreme” inclusion. Thus, this study investigated whether, during interpersonal exchanges, BPD patients report more rejection-related negative emotions and less feelings of social connection than controls, unless they are faced with conditions of extreme social inclusion.
Sixty-one BPD patients and sixty-one healthy controls completed a modified Cyberball paradigm. They were randomly assigned to a condition of ostracism, social inclusion or over-inclusion (a proxy for extreme social inclusion). They then rated their emotional states and feelings of social connection both immediately and 20 minutes after the game.
BPD patients reported greater levels of negative emotions than controls in both the ostracism and the inclusion conditions, but not when over-included. Further, only for BPD participants was over-inclusion associated with experiencing less negative emotions than the ostracism condition. Yet, BPD patients reported lower feelings of social connection than controls in any experimental situation.
Thus, in BPD, a laboratory condition of “over-inclusion” is associated with a reduction of negative emotions to levels comparable to those of control participants, but not with similar degrees of social connection. These results suggest that for BPD patients even “including contexts” activate feelings of rejection. Their implicit expectations of idealized interpersonal inclusion may nullify the opportunity of experiencing “real” social connection and explain their distorted subjective experiences of rejection.
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