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| Polytomisk skalutveckling× | Konfirmatorisk faktoranalys (CFA)× | |
|---|---|---|
| Ämnesområde | Psykometri | Psykometri |
| Familj | Latent structure | Latent structure |
| Ursprungsår≠ | 1969–1982 | 1969 |
| Upphovsperson≠ | Samejima, F.; Masters, G. N. (independently) | Karl Gustav Jöreskog |
| Typ≠ | Psychometric scale construction | Hypothesis-testing latent variable model |
| Ursprungskälla≠ | Embretson, S. E. & Reise, S. P. (2000). Item Response Theory for Psychologists. Lawrence Erlbaum Associates. ISBN: 978-0805828191 | Jöreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. Psychometrika, 34(2), 183–202. DOI ↗ |
| Alias | polytomous item development, ordered-category scale construction, rating scale development, multi-category item development | CFA, confirmatory FA, measurement model, restricted factor analysis |
| Närliggande≠ | 6 | 4 |
| Sammanfattning≠ | Polytomous scale development is the systematic construction and validation of measurement instruments whose items have three or more ordered response categories — such as Likert-type, rating, or partial-credit items. It applies polytomous item response theory models or ordinal factor analysis methods to evaluate item quality, estimate latent trait levels, and build a psychometrically sound 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. |
| ScholarGateDatamängd ↗ |
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