Comparar métodos
Examine os métodos selecionados lado a lado; as linhas que diferem ficam destacadas.
| Ômega Hierárquico de McDonald (ωh)× | Análise Fatorial Exploratória (AFE)× | |
|---|---|---|
| Área≠ | Psicometria | Estatística |
| Família | Latent structure | Latent structure |
| Ano de origem≠ | 1999 | — |
| Autor original≠ | Roderick P. McDonald | — |
| Tipo≠ | Reliability / composite score validity coefficient | Latent variable / dimension reduction |
| Fonte seminal≠ | Reise, S. P., Scheines, R., Widaman, K. F. & Haviland, M. G. (2013). Multidimensionality and structural coefficient bias in structural equation modeling: A bifactor perspective. Educational and Psychological Measurement, 73(1), 5–26. DOI ↗ | Fabrigar, L. R., Wegener, D. T., MacCallum, R. C. & Strahan, E. J. (1999). Evaluating the use of exploratory factor analysis in psychological research. Psychological Methods, 4(3), 272–299. DOI ↗ |
| Outros nomes≠ | omega hierarchical, omega-h, bifactor omega, composite score validity coefficient | common factor analysis, açımlayıcı faktör analizi, factor analysis |
| Relacionados≠ | 5 | 4 |
| Resumo≠ | McDonald's hierarchical omega (ωh) is a coefficient derived from a bifactor confirmatory factor model that quantifies what proportion of total-score variance is attributable to a single general factor rather than to group-specific factors or item-level error. Introduced by Roderick P. McDonald (1999) and elaborated for bifactor applications by Reise and colleagues (2013) and Rodriguez and colleagues (2016), it is the primary index used in psychometrics to evaluate whether a composite total score is a defensible summary of a multidimensional scale. | Exploratory factor analysis reduces a large set of observed variables into a smaller number of latent common factors. It is widely used in scale development and psychometrics to uncover the dimensional structure that underlies a set of correlated items, without specifying that structure in advance. |
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