| Literature DB >> 21280957 |
Rob R Meijer1, Rivka M de Vries, Vincent van Bruggen.
Abstract
The psychometric structure of the Brief Symptom Inventory-18 (BSI-18; Derogatis, 2001) was investigated using Mokken scaling and parametric item response theory. Data of 487 outpatients, 266 students, and 207 prisoners were analyzed. Results of the Mokken analysis indicated that the BSI-18 formed a strong Mokken scale for outpatients and prisoners, indicating strong unidimensionality. For students, only the depression and anxiety items formed a medium Mokken scale. Parametric item response theory analyses showed that the best discriminating items came from the depression and anxiety subscales.Entities:
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Year: 2011 PMID: 21280957 DOI: 10.1037/a0021292
Source DB: PubMed Journal: Psychol Assess ISSN: 1040-3590