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| Modello di Rasch× | Confirmatory factor analysis× | |
|---|---|---|
| Campo | Psicometria | Psicometria |
| Famiglia | Latent structure | Latent structure |
| Anno di origine≠ | 1960 | 1969 |
| Ideatore≠ | Georg Rasch | Karl Gustav Jöreskog |
| Tipo≠ | Item Response Theory / Latent trait model | Hypothesis-testing latent variable model |
| Fonte seminale≠ | Rasch, G. (1960). Probabilistic Models for Some Intelligence and Attainment Tests. Danish Institute for Educational Research, Copenhagen. link ↗ | Jöreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. Psychometrika, 34(2), 183–202. DOI ↗ |
| Alias | 1PL IRT, one-parameter logistic model, Rasch Modeli — 1PL IRT, 1PL model | CFA, confirmatory FA, measurement model, restricted factor analysis |
| Correlati≠ | 6 | 4 |
| Sintesi≠ | The Rasch model, introduced by Georg Rasch in 1960, is the simplest member of the Item Response Theory (IRT) family. It assigns a single difficulty parameter to each test item and places both item difficulties and person abilities on the same logit scale, enabling direct, sample-independent comparison of items and persons. | 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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