Borderline personality traits and disorder: predicting prospective patient functioning.
OBJECTIVE
Decisions about the composition of personality assessment in the Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-V) will be heavily influenced by the clinical utility of candidate constructs. In this study, we addressed 1 aspect of clinical utility by testing the incremental validity of 5-factor model (FFM) personality traits and borderline personality disorder (BPD) symptoms for predicting prospective patient functioning.


METHODS
FFM personality traits and BPD features were correlated with one another and predicted 2-, 4-, 6-, 8-, and 10-year psychosocial functioning scores for 362 patients with personality disorders.


RESULTS
Traits and symptom domains related significantly and pervasively to one another and to prospective functioning. FFM extraversion and agreeableness tended to be most incrementally predictive of psychosocial functioning across all intervals; cognitive and impulse action features of BPD features incremented FFM traits in some models.


CONCLUSIONS
These data suggest that BPD symptoms and personality traits are important long-term indicators of clinical functioning that both overlap with and increment one another in clinical predictions. Results support the integration of personality traits and disorders in DSM-V.
Hopwood
Christopher J
CJ
Department of Psychology, Michigan State University, East Lansing, MI 48824-1116, USA. hopwood2@msu.edu
Zanarini
Mary C
MC
D000293:Adolescent; D000328:Adult; D001883:Borderline Personality Disorder / Q000175:diagnosis* / Q000523:psychology; D003299:Cooperative Behavior; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005120:Extraversion, Psychological; D005260:Female; D006801:Humans; D008297:Male; D010552:Personality Assessment / Q000706:statistics & numerical data*; D011379:Prognosis; D011446:Prospective Studies; D011594:Psychometrics / Q000706:statistics & numerical data; D015203:Reproducibility of Results; D012917:Social Adjustment; D013223:Statistics as Topic; D055815:Young Adult