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| Kortform Cronbachs alfa× | Konstruktiv faktoranalyse (CFA)× | |
|---|---|---|
| Fagområde | Psykometri | Psykometri |
| Familie | Latent structure | Latent structure |
| Oprindelsesår≠ | 1951 (alpha); short-form practice codified 1980s–2000s | 1969 |
| Ophavsperson≠ | L. J. Cronbach (alpha); short-form application formalized across scale-abbreviation literature | Karl Gustav Jöreskog |
| Type≠ | Internal consistency reliability coefficient | Hypothesis-testing latent variable model |
| Oprindelig kilde≠ | Smith, G. T., McCarthy, D. M. & Anderson, K. G. (2000). On the sins of short-form development. Psychological Assessment, 12(1), 102–111. DOI ↗ | Jöreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. Psychometrika, 34(2), 183–202. DOI ↗ |
| Aliasser | abbreviated scale alpha, brief scale internal consistency, short-scale Cronbach's alpha, reduced-item alpha | CFA, confirmatory FA, measurement model, restricted factor analysis |
| Relaterede | 4 | 4 |
| Resumé≠ | Short-form Cronbach's alpha quantifies the internal consistency reliability of an abbreviated version of a psychological scale. It applies Cronbach's alpha formula to a reduced item set, verifying that the shortened instrument retains sufficient reliability to support valid score interpretation in research and applied contexts. | 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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