A study of the dimensionality and measur
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Muirne C. S. Paap; Rob R. Meijer; Jan Van Bebber; Geir Pedersen; Sigmund Karteru
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Article
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2011
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John Wiley and Sons
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English
β 237 KB
## Abstract We used item response theory (IRT) to (a) investigate the dimensionality of the Symptom Checklistβ90βRevised (SCLβ90βR) in a severely disturbed patient group, (b) improve the subscales in a meaningful way and (c) investigate the measurement precision of the improved scales. The total sa