Social Cognition and Borderline Personality Disorder: Splitting and Trust Impairment Findings.

The Borderline personality disorder (BPD) diagnosis has its origins in the concept of borderline personality organization (BPO). BPO is rooted in psychoanalytic object relations theory (ORT) which conceptualizes BPD and BPO to exhibit a propensity to view significant others as either idealized or persecutory (splitting) and a trait-like paranoid view of interpersonal relations. From the ORT model, those with BPD think that they will ultimately be betrayed, abandoned, or neglected by significant others, despite periodic idealizations. This article synthesizes the extant literature splitting and trust impairments in BPD, identifies avenues for further investigation, and discusses the relative promise of different methods to evaluate these clinical processes.