LAUSR

The purpose of this study was to adapt the short-form version of the Five-Factor Borderline Inventory (FFBI-SF) in French, a 12-domain questionnaire of 48 items assessing Borderline Personality Disorders (BPD). Participants from the general population voluntarily took part in our study and were separated into two samples: a student (n = 335) and a worker sample (n = 162). They completed four questionnaires randomly distributed: a demographic questionnaire, the FFBI-SF, the Big Five Inventory, the McLean Screening Instrument for Borderline Personality Disorder, and the Borderline Symptom List, Short Form. Our results showed acceptable model fit indices for a 12-factor model and acceptable to excellent reliability indices (overall α = .95 and average α of all domains is .78). Strong correlations were found between FFBI-SF and other BPD measures, suggesting good convergent validity. Moreover, compared with other BPD questionnaires, the incremental validity of the FFBI-SF was between 13 and 23%, showing a substantial additional part of variance explained by the FFBI-SF. Our findings provide evidence for a valid and reliable French adaptation of the FFBI-SF. This study fits with a growing need for clinicians and researchers to benefit from multifacet, accessible, and quickly completed tools that assess subclinical BPD.