The Italian version of the borderline personality disorder severity index IV: Psychometric properties, clinical usefulness, and possible diagnostic implications

di Giacomo, Ester;Arntz, Arnoud;Fotiadou, Maria;Aguglia, Eugenio;Barone, Lavinia;Bellino, Silvio;CARPINIELLO, BERNARDO;Colmegna, Fabrizia;Lazzari, Marina;Lorettu, Liliana;PINNA, FEDERICA;Sicaro, Aldo;Signorelli, Maria Salvina;Clerici, Massimo

2018-01-01

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Abstract

Borderline personality disorder (BPD) has a core embodied in affective and behavioral dysregulations, impulsivity, and relational disturbance. Clinical presentation might be heterogeneous due to a combination of different symptoms listed in the DSM-5. Clinical diagnosis and assessment of the severity of manifestations might be improved through the administration of structured interviews such as the Borderline Personality Disorder Severity Index, 4th edition (BPDSI-IV). The psychometric properties of the Italian version of the BPDSI-IV were examined for the first time in 248 patients affected by BPD and 113 patients affected by bipolar disorder, proving to be a valid and accurate instrument with good internal consistency and high accuracy. The Italian version also demonstrates significant validity in the discrimination between these clinical groups (p < .001).