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| Ορθολογικό Μοντέλο Rasch (Μοντέλα Κλίμακας Βαθμολόγησης και Μερικής Πίστωσης)× | Έλεγχος Αναλλοιότητας Μετρήσεων× | |
|---|---|---|
| Πεδίο | Ψυχομετρία | Ψυχομετρία |
| Οικογένεια | Latent structure | Latent structure |
| Έτος προέλευσης≠ | 1978–1982 | 2000 |
| Δημιουργός≠ | David Andrich (RSM, 1978); Geoff Masters (PCM, 1982) | Vandenberg & Lance |
| Τύπος≠ | Item response model for ordered categories | Multi-group confirmatory factor analysis procedure |
| Θεμελιώδης πηγή≠ | Andrich, D. (1978). A rating formulation for ordered response categories. Psychometrika, 43(4), 561–573. DOI ↗ | Vandenberg, R. J., & Lance, C. E. (2000). A review and synthesis of the measurement invariance literature. Organizational Research Methods, 3(1), 4–70. DOI ↗ |
| Εναλλακτικές ονομασίες | Rating Scale Model, Partial Credit Model, RSM, PCM | Factorial Invariance, Measurement Equivalence, Configural-Metric-Scalar Testing, Ölçüm Değişmezliği |
| Συναφείς≠ | 6 | 3 |
| Σύνοψη≠ | The ordinal Rasch model extends the dichotomous Rasch framework to items with ordered response categories such as Likert-type scales. It places both persons and items on a shared interval-level metric, enabling principled measurement from ordinal data while checking whether items function consistently across all response thresholds. | Measurement invariance testing is a sequence of nested confirmatory factor analysis (CFA) models that examines whether a psychological scale measures the same latent construct in the same way across distinct groups or time points. Systematized and popularized by Vandenberg and Lance (2000), the procedure tests a hierarchy of constraints — from identical factor patterns to identical item intercepts — so that researchers can justify meaningful group comparisons on latent means. |
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