A Bifactor Model of Personality Organization.

The aim of this study was to explore the viability of a bifactor model for the Inventory of Personality Organization (IPO), which is a self-report measure of personality functioning based on Kernberg's model of personality organization. A heterogeneous, predominantly clinical sample (N = 616) completed the German 83-item version of the IPO. Confirmatory and Exploratory Factor Analyses were applied to explore the factor structure of the IPO. We were able to establish a bifactor model with a general factor of personality functioning and three specific factors (Aggression, Reality Testing, Moral Values), which represent additional dimensions of personality organization. Virtually all items showed substantial positive loadings on the general factor, explaining roughly 66% of the common variance. Furthermore, we found support for convergent and discriminant validity of general and specific factors with regard to interview-based assessments of personality disorders and personality organization. The results lend support to a bifactor approach to Kernberg's model of personality organization. We also present a 30-item brief form of the IPO that efficiently implements the bifactor approach and may be further validated in future studies.

Impact of Interpersonal Problems in Borderline Personality Disorder Inpatients on Treatment Outcome and Psychopathology.

BACKGROUND: Borderline personality disorder (BPD) is a very common illness; interpersonal problems are one of the core features. The purpose of this study was to investigate the changes in interpersonal problems after transference-focused psychotherapy (TFP)-based disorder-specific treatment and to explore whether the severity of interpersonal problems could serve as a predictor for other variables. SAMPLING AND METHODS: A sample of 37 inpatients with BPD was assessed with the Structured Clinical Interviews for DSM-IV Axis I and II Disorders (SCID I and II) and had to complete a questionnaire including the Inventory of Interpersonal Problems (IIP-C), Inventory of Personality Organization (IPO), Beck Depression Inventory (BDI), Spielberger State and Trait Inventory (STAI), Spielberger State and Trait Anger Inventory (STAXI), and Symptom Checklist-90 (SCL-90-R). After 12 weeks of TFP-based disorder-specific treatment, the patients repeated the same questionnaire; 7 patients had to be excluded from the study, and thus calculations were conducted with 30 patients. RESULTS: After treatment, the patients showed a significant decrease in the IIP total item score and all 8 subscales except the domineering, intrusive, and cold scales. The IIP total item baseline score was correlated with borderline symptomatic and psychopathology [e.g. anxiety, Global Severity Index (GSI)] after 12 weeks as well as with most IIP postsubscales. CONCLUSIONS: Although interpersonal problems are considered one of the more stable features of BPD, our results showed a significant improvement after 12 weeks of TFP-based disorder-specific inpatient treatment, especially in the total score and the subscales on the friendly submissive level. The severity of interpersonal problems at baseline was connected to outcome values of other borderline features as well as general psychiatric complaints. It therefore seems important to consider the treatment of interpersonal problems in therapy to be of greater significance.

Facial Affective Behavior in Borderline Personality Disorder Indicating Two Different Clusters and Their Influence on Inpatient Treatment Outcome: A Preliminary Study.

BACKGROUND: The purpose of the present study was threefold: first, to investigate the facial affective behavior in patients with a borderline personality disorder (BPD); second, to examine whether these patients could be divided into clusters according to facial affective behavior; and third, to test whether these clusters would influence the inpatient treatment outcome. METHODS: Thirty inpatients with BPD were assessed with the Structured Clinical Interviews for DSM-IV Axis I and II Disorders (SCID I, SCID II) and had to complete a series of questionnaires before and directly after the 12-week long inpatient treatment. Facial affective behavior was recorded during the structured interview for personality organization (STIPO) and afterward coded with the emotional facial action coding system (EMFACS). Measures on psychopathology [beck depression inventory (BDI), Spielberger state and trait anxiety inventory (STAI), Spielberger state and trait anger inventory (STAXI), and symptom cheklist-90-revised (SCL-90-R)], interpersonal problems [Inventory of Interpersonal Problems (IIP)], and personality organization [inventory of personality organization (IPO)] were administered. RESULTS: Cluster analysis before the treatment yielded two groups that differed in general facial expressivity, and regarding the display of anger, contempt, and disgust. The effect sizes of the repeated measures ANOVAs showed that persons with higher scores on the affective facial expressions benefitted more from the treatment in terms of STAI state anxiety, STAXI state and trait anger, IIP total, and the two scales primitive defenses and identity diffusion of the IPO, whereas persons with lower scores benefitted more on the scale IPO reality testing. CONCLUSION: Our results indicated some initial trends for the importance of facial affective behavior in patients with BPD and their treatment outcome.