Background
Borderline personality disorder (BPD) is partly characterized by chronic instability in interpersonal relationships, which exacerbates other symptom dimensions of the disorder and can interfere with treatment engagement. Facial emotion recognition paradigms have been used to investigate the bases of interpersonal impairments in BPD, yielding mixed results. We sought to clarify and extend past findings by using the Reading the Mind in the Eyes Test (RMET), a measure of the capacity to discriminate the mental state of others from expressions in the eye region of the face.
Method
Thirty individuals diagnosed with BPD were compared to 25 healthy controls (HCs) on RMET performance. Participants were also assessed for depression severity, emotional state at the time of assessment, history of childhood abuse, and other Axis I and personality disorders (PDs).
Results
The BPD group performed significantly better than the HC group on the RMET, particularly for the Total Score and Neutral emotional valences. Effect sizes were in the large range for the Total Score and for Neutral RMET performance. The results could not be accounted for by demographics, co-occurring Axis I or II conditions, medication status, abuse history, or emotional state. However, depression severity partially mediated the relationship between RMET and BPD status.
Conclusions
Mental state discrimination based on the eye region of the face is enhanced in BPD. An enhanced sensitivity to the mental states of others may be a basis for the social impairments in BPD.
It is argued that borderline personality disorder (BPD) represents the interaction of underlying neurobehavioral systems that are reflected principally in the phenotypic constructs of positive emotion, negative emotion, and nonaffective constraint (Depue & Lenzenweger, 2001). This preliminary and exploratory study sought to examine predictions made from the Depue-Lenzenweger model with respect to controlled (effortful) information processing in BPD. It was hypothesized that (a) BPD subjects may display deficits on tasks that require controlled information processing (sustained attention, spatial working memory, and executive functioning), (b) they may reveal elevated negative emotion as well as decreased positive emotion and nonaffective constraint, and (c) nonaffective constraint should be substantially inversely associated with accurate performance on controlled information processing tasks. The results of this study, which examined 24 BPD diagnosed individuals and 68 normal adults, found support for each of these predictions in relation to performance on the Wisconsin Card Sorting Test. The implications of these results for further experimental psychopathology investigations of BPD as well as further refinement of theoretical models of the disorder are discussed.
Borderline Personality Disorder (BPD) is characterized by unstable interpersonal relationships and intense concerns regarding abandonment and rejection. Previous studies suggest that these and other symptoms of BPD may have their origin in a greater appraisal of untrustworthiness in others. However, it is not known whether this is a result of a heightened sensitivity to trust related stimuli, an improved ability to discriminate between such stimuli, or a response bias. Furthermore, impairment in facial fear appraisal may influence trust appraisal. Healthy controls and individuals diagnosed with BPD appraised human faces that were parametrically varied along either a trust or fear dimension. The BPD group exhibited a response bias to rate the untrustworthiness of facial stimuli higher compared to controls, but there were no significant differences in the discriminability or sensitivity of trustworthiness between groups. Furthermore, ambiguous trust decisions were associated with longer response times (RTs) in individuals with BPD relative to controls. Individuals with BPD have a facial appraisal bias specific to untrustworthiness that does not co-occur with impairments in the appraisal of fear.
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