Executive function and suicidal risk in women with Borderline Personality Disorder

Area of Science:

• Neuroscience
• Psychiatry
• Clinical Psychology

Background:

• Borderline Personality Disorder (BPD) is linked to executive function (EF) deficits.
• High suicide rates are characteristic of BPD.
• The relationship between EF, suicide risk, and BPD remains under-examined.

Purpose of the Study:

• To investigate executive function (EF) performance in women with BPD.
• To determine the sensitivity of EF to suicide risk in BPD.
• To explore the contribution of EF to suicide risk beyond depression and BPD severity.

Main Methods:

• Compared working memory, Stroop interference, motor inhibition, and decision-making in 42 women with BPD and 41 controls.
• Assessed suicide risk using the Suicide Behaviour Questionnaire-R.
• Tested the sensitivity of EF to suicidal risk.

Main Results:

• Women with BPD showed impaired decision-making but similar performance on other EF tasks compared to controls.
• Weaker Stroop interference control was the sole significant EF predictor of suicide risk.
• EF and depression collectively explained 34% of the variance in suicide risk.

Conclusions:

• Stroop interference control, not decision-making or motor inhibition, significantly contributes to suicide risk in BPD.
• Impaired interference control may represent a suicide diathesis independent of psychiatric diagnosis.
• Stroop performance sensitivity to suicidal risk may hold clinical importance for BPD suicide prevention.