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| 多群マクドナルドのオメガ× | 確認的因子分析（CFA）× | |
|---|---|---|
| 分野 | 心理測定学 | 心理測定学 |
| 系統 | Latent structure | Latent structure |
| 提唱年≠ | 1999 (multi-group extension: 2000s–2010s) | 1969 |
| 提唱者≠ | Roderick P. McDonald | Karl Gustav Jöreskog |
| 種類≠ | Reliability coefficient (multi-group extension) | Hypothesis-testing latent variable model |
| 原典≠ | McDonald, R. P. (1999). Test Theory: A Unified Treatment. Lawrence Erlbaum Associates. ISBN: 978-0805830408 | Jöreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. Psychometrika, 34(2), 183–202. DOI ↗ |
| 別名 | multi-group omega, omega across groups, group-comparative omega, MG-omega | CFA, confirmatory FA, measurement model, restricted factor analysis |
| 関連 | 4 | 4 |
| 概要≠ | 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. | Confirmatory factor analysis tests a researcher-specified factor structure against observed data. Unlike exploratory approaches, the researcher decides in advance which indicators load on which latent factor, and the model is evaluated by how closely the implied covariance matrix reproduces the sample covariance matrix. CFA is central to scale validation, construct validity assessment, and measurement invariance testing. |
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