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| Affidabilità inter-rater (kappa di Cohen e ICC)× | Alpha di Cronbach (Analisi di Affidabilità)× | |
|---|---|---|
| Campo≠ | Psicometria | Statistica |
| Famiglia | Latent structure | Latent structure |
| Anno di origine≠ | 1960 (kappa); 1979 (ICC) | 1951 |
| Ideatore≠ | Cohen (kappa, 1960); Shrout & Fleiss (ICC, 1979) | Lee J. Cronbach |
| Tipo≠ | Reliability / agreement analysis | Reliability / internal consistency coefficient |
| Fonte seminale≠ | Cohen, J. (1960). A Coefficient of Agreement for Nominal Scales. Educational and Psychological Measurement, 20(1), 37–46. DOI ↗ | Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334. DOI ↗ |
| Alias≠ | inter-rater reliability, interrater agreement, rater agreement, Değerlendiriciler Arası Güvenilirlik (Cohen's κ, ICC) | coefficient alpha, alpha reliability, internal consistency reliability, Güvenilirlik Analizi (Cronbach Alpha) |
| Correlati≠ | 6 | 4 |
| Sintesi≠ | Interrater reliability quantifies the degree to which two or more independent raters produce consistent scores when evaluating the same individuals or products. The family encompasses Cohen's kappa, introduced in 1960 for categorical judgments, and the Intraclass Correlation Coefficient (ICC) for continuous ratings, together spanning most measurement scenarios encountered in behavioral, health, and educational research. | 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. |
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