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| Raschmodell× | Explorativ faktoriell analys (EFA)× | |
|---|---|---|
| Ämnesområde≠ | Psykometri | Statistik |
| Familj | Latent structure | Latent structure |
| Ursprungsår≠ | 1960 | — |
| Upphovsperson≠ | Georg Rasch | — |
| Typ≠ | Item Response Theory / Latent trait model | Latent variable / dimension reduction |
| Ursprungskälla≠ | Rasch, G. (1960). Probabilistic Models for Some Intelligence and Attainment Tests. Danish Institute for Educational Research, Copenhagen. link ↗ | 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 ↗ |
| Alias≠ | 1PL IRT, one-parameter logistic model, Rasch Modeli — 1PL IRT, 1PL model | common factor analysis, açımlayıcı faktör analizi, factor analysis |
| Närliggande≠ | 6 | 4 |
| Sammanfattning≠ | 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. | 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. |
| ScholarGateDatamängd ↗ |
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