The Borderline Syndrome Index: a validation study using the personality assessment schedule.

Marlowe, M J; O'Neill-Byrne, K; Lowe-Ponsford, F; Watson, J P · Br J Psychiatry · 1996

case_control · Level III

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Abstract

This study examines the validity and screening properties of the Borderline Syndrome Index--BSI (developed in the USA) for categories of the Personality Assessment Schedule--PAS (developed in the UK). Patients were recruited by case control sampling. Chance corrected agreement between instruments and screening properties of the BSI were calculated. The BSI proved a moderately sensitive but non-specific screen. Questionnaire scores were highly correlated with symptom measures. The results do not support the validity of the BSI or its use as a screening instrument. BSI scores may be distorted by current symptoms.

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