A latent class analysis clarified this finding by revealing six homogeneous interpersonal classes with prototypical profiles associated with Intrusive, Vindictive, Avoidant, Nonassertive, and moderate and severe Exploitable interpersonal problems.  Clarifying Interpersonal Heterogeneity in Borderline Personality Disorder Using Latent Mixture Modeling Aidan G.C. Wright, Michael N. Hallquist, Jennifer Q. Morse, Lori N. Scott, Stephanie D. Stepp, Kimberly A. Nolf, and Paul A. Pilkonis The publisher’s final edited version of this article is available at J Pers Disord Abstract Significant interpersonal impairment is a cardinal feature of borderline personality disorder (BPD). However, past research has demonstrated that the interpersonal profile associated with BPD varies across samples, evidence for considerable interpersonal heterogeneity. The…

Different patterns of brain activity in people with borderline personality disorder were associated with disruptions in the ability to recognize social norms or modify behaviors that likely result in distrust and broken relationships, according to an NIMH-funded study published online in the August 8, 2008 issue of Science. Borderline personality disorder is a serious mental illness noted by unstable moods, behavior and relationships. Each year, 1.4 percent of adults in the United States have this disorder,1 which is widely viewed as being difficult to treat. Using brain imaging and game theory, a mathematical approach to studying social interactions, the researchers offer a potential new way to define and describe this mental illness. They…