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| Πολυομαδικό Ωμέγα του McDonald× | Πολυομαδική άλφα Cronbach× | |
|---|---|---|
| Πεδίο | Ψυχομετρία | Ψυχομετρία |
| Οικογένεια | Latent structure | Latent structure |
| Έτος προέλευσης≠ | 1999 (multi-group extension: 2000s–2010s) | 1951 (alpha); multi-group application from 1980s onward |
| Δημιουργός≠ | Roderick P. McDonald | Lee J. Cronbach (alpha); multi-group extension in cross-cultural and measurement invariance research |
| Τύπος≠ | Reliability coefficient (multi-group extension) | Reliability / internal consistency comparison |
| Θεμελιώδης πηγή≠ | McDonald, R. P. (1999). Test Theory: A Unified Treatment. Lawrence Erlbaum Associates. ISBN: 978-0805830408 | Cronbach, L. J. (1951). Coefficient alpha and the internal structure of tests. Psychometrika, 16(3), 297–334. DOI ↗ |
| Εναλλακτικές ονομασίες | multi-group omega, omega across groups, group-comparative omega, MG-omega | group-stratified alpha, cross-group alpha comparison, subgroup internal consistency, MG-alpha |
| Συναφείς | 4 | 4 |
| Σύνοψη≠ | Multi-group McDonald's omega estimates and compares the reliability of a scale across two or more distinct groups. Rooted in confirmatory factor analysis, it uses the factor loadings and unique variances from each group's measurement model to compute omega, then tests whether reliability is statistically equivalent across groups. | Multi-group Cronbach's alpha estimates and compares the internal consistency reliability of a scale separately within each of two or more defined subgroups. It is used in cross-cultural, demographic, and comparative psychometric research to establish that a scale measures its construct with equivalent precision across groups before making cross-group comparisons. |
| ScholarGateΣύνολο δεδομένων ↗ |
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