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| Θεωρία Γενικευσιμότητας (G-Theory)× | Συντελεστής Άλφα του Cronbach (Ανάλυση Αξιοπιστίας)× | |
|---|---|---|
| Πεδίο≠ | Ψυχομετρία | Στατιστική |
| Οικογένεια | Latent structure | Latent structure |
| Έτος προέλευσης≠ | 1963 | 1951 |
| Δημιουργός≠ | Lee J. Cronbach and colleagues | Lee J. Cronbach |
| Τύπος≠ | ANOVA-based variance-component framework | Reliability / internal consistency coefficient |
| Θεμελιώδης πηγή≠ | Brennan, R. L. (2001). Generalizability Theory. Springer. link ↗ | Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334. DOI ↗ |
| Εναλλακτικές ονομασίες≠ | Generalizability Theory, G-Study / D-Study framework, Genellenebilirlik Kuramı (G-Kuramı) | coefficient alpha, alpha reliability, internal consistency reliability, Güvenilirlik Analizi (Cronbach Alpha) |
| Συναφείς≠ | 6 | 4 |
| Σύνοψη≠ | Generalizability Theory, developed by Lee J. Cronbach and colleagues in the 1960s and formalised by Brennan (2001), is an ANOVA-based framework that extends Classical Test Theory by decomposing observed score variance into multiple, separately identified sources of measurement error — such as raters, tasks, occasions, or items — rather than bundling all error into a single undifferentiated term. | Cronbach's alpha is a coefficient of internal consistency that quantifies the degree to which a set of items on a scale measures the same underlying construct. Introduced by Lee J. Cronbach in 1951, it remains the most widely reported reliability index in social-science, health, and educational research. |
| ScholarGateΣύνολο δεδομένων ↗ |
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