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Psychometric properties of the BSL-23 (English translation) and its equivalency with the BSL-23 (German): an analysis based on Item Response Theory

Although widely employed in clinical research, no studies have evaluated the psychometric properties of the English version of the Borderline Symptom List-23 (BSL-23), including the equivalence of its mean score to that of the German version. Using Item Response Theory, we: a) examined the psychomet...

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Bibliographic Details
Main Authors: Labrish, Cathy (Author) , Alter, Udi (Author) , Kleindienst, Nikolaus (Author) , Streiner, David L. (Author) , Bohus, Martin (Author) , McMain, Shelley (Author)
Format: Article (Journal)
Language:English
Published: December 2026
In: BMC psychiatry
Year: 2026, Volume: 26, Issue: 1, Pages: 1-18
ISSN:1471-244X
DOI:10.1186/s12888-026-07863-y
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1186/s12888-026-07863-y
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Author Notes:Cathy Labrish, Udi Alter, Nikolaus Kleindienst, David L. Streiner, Martin Bohus and Shelley McMain
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Summary:Although widely employed in clinical research, no studies have evaluated the psychometric properties of the English version of the Borderline Symptom List-23 (BSL-23), including the equivalence of its mean score to that of the German version. Using Item Response Theory, we: a) examined the psychometric properties of the English BSL-23 when administered to treatment-seeking adults diagnosed with Borderline Personality Disorder (BPD); and b) tested if language-related bias needs to be considered when comparing or combining mean scores from the German and English versions.
Item Description:Online veröffentlicht: 10. Februar 2026
Gesehen am 20.04.2026
Physical Description:Online Resource
ISSN:1471-244X
DOI:10.1186/s12888-026-07863-y

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