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| Omega di McDonald multilivello× | Analisi di Affidabilità Multilivello× | |
|---|---|---|
| Campo | Psicometria | Psicometria |
| Famiglia | Latent structure | Latent structure |
| Anno di origine≠ | 1999 (omega); 2014 (multilevel extension) | 2014 |
| Ideatore≠ | Roderick P. McDonald (omega); multilevel extension by Geldhof, Preacher & Zyphur | Geldhof, Preacher & Zyphur |
| Tipo≠ | Reliability coefficient | Reliability estimation / psychometric modeling |
| Fonte seminale | Geldhof, G. J., Preacher, K. J., & Zyphur, M. J. (2014). Reliability estimation in a multilevel confirmatory factor analysis framework. Psychological Methods, 19(1), 72–91. DOI ↗ | Geldhof, G. J., Preacher, K. J., & Zyphur, M. J. (2014). Reliability estimation in a multilevel confirmatory factor analysis framework. Psychological Methods, 19(1), 72–91. DOI ↗ |
| Alias | multilevel omega, omega within, omega between, hierarchical omega | multilevel omega, within-group reliability, between-group reliability, hierarchical reliability |
| Correlati | 3 | 3 |
| Sintesi≠ | Multilevel McDonald's omega estimates reliability at two distinct levels — within groups and between groups — for scales administered to individuals nested in clusters such as classrooms, teams, or organizations. It accounts for the non-independence induced by grouping and avoids the bias that single-level omega produces in clustered data. | Multilevel reliability analysis estimates the internal consistency of scale scores separately at the within-group (individual) and between-group (cluster) levels. It corrects the bias that arises when ordinary alpha or omega is applied to hierarchically nested data, such as employees within organizations or students within classrooms. |
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