Experiential avoidance in participants with borderline personality disorder and other personality disorders.

Background: The present study has descriptive and predictive aims. The descriptive aims were to determine if participants with borderline personality disorder (BPD) reported higher levels of experiential avoidance (EA) than participants with other personality disorders (OPD) as well as determine if non-recovered participants with BPD reported higher levels of EA than participants with BPD who have recovered symptomatically and psychosocially. The predictive aim was to determine if the level of EA reported by participants with BPD was predicted by the severity of aspects of childhood or adult adversity and/or aspects of temperament.

Methods: The Overall Anxiety Severity and Impairment Scale (OASIS) was administered to 248 participants at 24-year follow-up in the McLean Study of Adult Development (MSAD). Adversity and temperament were assessed during index admission using interviews (Revised Childhood Experience Questionnaire [CEQ-R], Adult History Interview [AHI], and the NEO-FFI self-report measure).

Results: Participants with BPD reported significantly higher levels of EA than those with OPD. Within the BPD group, non-recovered participants reported significantly higher levels of EA than recovered participants. Severity of childhood sexual abuse and lower levels of extraversion were found to be significant multivariate predictors of levels of EA in those with BPD.

Conclusions: Taken together, these results suggest that EA is a serious problem for participants with BPD, particularly those who have not recovered. They also suggest that both the severity of childhood adversity and a temperament marked by lower levels of extroversion are significantly related to levels of EA reported by participants with BPD.