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| Valutazione ordinale della validità di contenuto× | Analisi degli item (Teoria Classica dei Test)× | |
|---|---|---|
| Campo | Psicometria | Psicometria |
| Famiglia | Latent structure | Latent structure |
| Anno di origine≠ | 2003 | 1979 |
| Ideatore≠ | Wynd, Schmidt & Schaefer | Classical Test Theory tradition; foundational texts by Allen & Yen (1979) and Crocker & Algina (1986) |
| Tipo≠ | Scale validation / content validity | Descriptive / psychometric screening |
| Fonte seminale≠ | Wynd, C. A., Schmidt, B., & Schaefer, M. A. (2003). Two quantitative approaches for estimating content validity. Western Journal of Nursing Research, 25(5), 508–518. DOI ↗ | Allen, M. J. & Yen, W. M. (1979). Introduction to Measurement Theory. Brooks/Cole. ISBN: 978-0818501333 |
| Alias≠ | ordinal CVI, Likert-scale content validity, ordinal expert rating validity, graded content validity | Madde Analizi (Klasik Test Kuramı), CTT item analysis, classical item analysis |
| Correlati≠ | 4 | 5 |
| Sintesi≠ | Ordinal content validity replaces the traditional binary (yes/no) expert relevance judgment with a graded, Likert-type rating scale, allowing richer expert opinion to be captured when evaluating whether scale items adequately represent the intended construct domain. | Item analysis is the foundational psychometric procedure for evaluating the quality of individual test or scale items within the Classical Test Theory (CTT) framework, as systematised by Allen and Yen (1979) and Crocker and Algina (1986). It produces an item difficulty index, an item discrimination index, and a distractor analysis for each item, enabling test developers to identify items that are too easy, too hard, or failing to separate high- and low-ability respondents. |
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