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| McDonald's omega per a formes abreviades× | Anàlisi Factorial Confirmatòria (CFA)× | |
|---|---|---|
| Camp | Psicometria | Psicometria |
| Família | Latent structure | Latent structure |
| Any d'origen≠ | 1999 (omega); short-form application 1990s–2000s | 1969 |
| Autor original≠ | Roderick P. McDonald (omega); short-form application systematised across psychometric literature | Karl Gustav Jöreskog |
| Tipus≠ | Reliability coefficient for abbreviated scales | Hypothesis-testing latent variable model |
| Font seminal≠ | McDonald, R. P. (1999). Test theory: A unified treatment. Lawrence Erlbaum Associates. ISBN: 978-0805830750 | Jöreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. Psychometrika, 34(2), 183–202. DOI ↗ |
| Àlies | omega for abbreviated scales, short-scale omega, omega-total short form, abbreviated scale reliability | CFA, confirmatory FA, measurement model, restricted factor analysis |
| Relacionats | 4 | 4 |
| Resum≠ | Short-form McDonald's omega applies the omega reliability coefficient to abbreviated or shortened versions of psychological scales. It provides a theoretically sound reliability estimate that accounts for the multidimensional structure of the short instrument, enabling researchers to evaluate whether abbreviation has preserved the reliability of the original full-length scale. | 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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