Investigating the Functioning of Rating Scales With Rasch Models.
| Autor: | Colledani D; University of Padova, Veneto, Italy., González Pizzio AP; University of Roma 'La Sapienza,' Lazio, Italy., Devita M; University of Padova, Veneto, Italy., Anselmi P; University of Padova, Veneto, Italy. |
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| Jazyk: | angličtina |
| Zdroj: | Assessment [Assessment] 2024 Apr 24, pp. 10731911241245792. Date of Electronic Publication: 2024 Apr 24. |
| DOI: | 10.1177/10731911241245792 |
| Abstrakt: | The hypothesis implicit in the rating scale design is that the categories reflect increasing levels of the latent variable. Rasch models for ordered polytomous items include parameters, called thresholds, that allow for empirically testing this hypothesis. Failure of the thresholds to advance monotonically with the categories (a condition that is referred to as "threshold disordering") provides evidence that the rating scale is not functioning as intended. This work focuses on scales consisting of rather large numbers of categories, whose use is often recommended in the literature. Threshold disordering is observed in both an extended 8-point scale specially developed for the Patient Health Questionnaire-9 and the original 10-point scale of the Behavioral Religiosity Scale. The results of this work prompt practitioners not to take the functioning of the rating scale for granted, but to verify it empirically. Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. |
| Databáze: | MEDLINE |
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