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| Logistisk IRT-modell med tre parametrar (3PL)× | Explorativ faktoriell analys (EFA)× | |
|---|---|---|
| Ämnesområde≠ | Psykometri | Statistik |
| Familj | Latent structure | Latent structure |
| Ursprungsår≠ | 1968 | — |
| Upphovsperson≠ | Allan Birnbaum | — |
| Typ≠ | Item response model / latent trait model | Latent variable / dimension reduction |
| Ursprungskälla≠ | Birnbaum, A. (1968). Some latent trait models and their use in inferring an examinee's ability. In F. M. Lord & M. R. Novick (Eds.), Statistical theories of mental test scores (pp. 397–479). Addison-Wesley. 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≠ | 3PL IRT — Üç Parametreli Madde Tepki Modeli, three-parameter logistic model, 3PLM, Birnbaum model | common factor analysis, açımlayıcı faktör analizi, factor analysis |
| Närliggande≠ | 5 | 4 |
| Sammanfattning≠ | The three-parameter logistic (3PL) model, introduced by Allan Birnbaum in 1968, is an item response theory model that describes the probability of a correct response to a binary test item as a function of three item-level parameters — difficulty, discrimination, and a lower asymptote representing guessing — and one person-level parameter representing latent ability. | 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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